CN111949438A - Multimedia data backup method, device, server and medium - Google Patents
Multimedia data backup method, device, server and medium Download PDFInfo
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Abstract
The embodiment of the invention discloses a multimedia data backup method, a device, a server and a medium, wherein the method comprises the steps of receiving a data backup task of at least one source end domain; distributing the current target write flow of the server in at least one source end domain according to the backup priority of each source end domain; determining the backup flow of each source end domain according to the flow distributed by each source end domain and the current target transmission flow of each source end domain; determining the backup rate of the current multimedia data in each source end domain according to the backup flow of each source end domain, the number of data acquisition devices included in each source end domain and the target data transmission speed of each source end domain; and executing the data backup task according to the backup rate. The embodiment of the invention maximizes the data backup capability of the server by considering the network diversity and prevents the multimedia data from being covered because the multimedia data are not backed up in time.
Description
Technical Field
The embodiment of the invention relates to the technical field of data processing, in particular to a multimedia data backup method, a device, a server and a medium.
Background
With the ever-increasing amount of data, more and more enterprises choose to employ network backups to store historical data. Network backups are typically implemented by specialized data storage management software in conjunction with corresponding hardware and storage devices.
In the current data Backup method, a Backup Management Server (BM) generally adjusts a Backup rate of data collected by each data collection device through a network packet loss test, for example, adjusts a Backup rate of video data collected by each camera through a network packet loss test, so as to realize data Backup. However, there is diversity in network data transmission, and the backup rate is adjusted only according to the packet loss test result of each data acquisition device, so that the adjustment of the backup rate has a relatively large randomness, resulting in a poor timely data backup effect.
Disclosure of Invention
Embodiments of the present invention provide a multimedia data backup method, apparatus, server, and medium, so as to maximize data backup capability of the server by considering network diversity, and prevent multimedia data from being overwritten because the multimedia data is not backed up in time.
In a first aspect, an embodiment of the present invention provides a multimedia data backup method, where the method includes:
receiving a data backup task of at least one source domain;
distributing the current target write flow of the server in at least one source end domain according to the backup priority of each source end domain;
determining the backup flow of each source end domain according to the flow distributed by each source end domain and the current target transmission flow of each source end domain;
determining the backup rate of the current multimedia data in each source end domain according to the backup flow of each source end domain, the number of data acquisition devices included in each source end domain and the target data transmission speed of each source end domain;
and executing the data backup task according to the backup rate.
In a second aspect, an embodiment of the present invention further provides a multimedia data backup apparatus, where the apparatus includes:
the data backup task receiving module is used for receiving the data backup tasks of at least one source end domain;
the flow distribution module is used for distributing the current target write flow of the server in the at least one source end domain according to the backup priority of each source end domain;
the backup flow determining module is used for determining the backup flow of each source end domain according to the flow distributed by each source end domain and the current target transmission flow of each source end domain;
the backup rate determining module is used for determining the backup rate of the current multimedia data in each source end domain according to the backup flow of each source end domain, the number of the data acquisition devices included in each source end domain and the target data transmission speed of each source end domain, wherein the backup rates of the multimedia data acquired by the data acquisition devices in the same source end domain are the same;
and the data backup task execution module is used for executing the data backup task according to the backup rate.
In a third aspect, an embodiment of the present invention further provides a server, including:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement a method for multimedia data backup according to any embodiment of the invention.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a multimedia data backup method according to any embodiment of the present invention.
The embodiment of the invention firstly distributes the current target write flow of the server in at least one source end domain according to the backup priority of each source end domain, then determines the backup rate of the current multimedia data in each source end domain according to the distributed flow of each source end domain, the current target transmission flow of each source end domain, the number of data acquisition devices included in each source end domain and the target data transmission speed of each source end domain, realizes the effect of dynamically regulating the backup rate of the multimedia data in each source end domain by taking the source end domains as units by considering network diversity, solves the problem of poor data backup effect caused by randomness in the backup rate regulating process based on packet loss test in the prior art, fully utilizes network bandwidth, maximizes the data backup capability of the server, and improves the backup efficiency of the multimedia data, the condition that the multimedia data is covered because the multimedia data is not backed up in time can be effectively prevented; moreover, the consideration of the current target write flow of the server and the current target transmission flow of the source end domain in the dynamic adjustment of the backup rate is equivalent to the consideration of the overall performance of the backup source end and the server, so that the rationality of the adjustment of the backup rate is ensured.
Drawings
Fig. 1 is a flowchart of a multimedia data backup method according to an embodiment of the present invention;
fig. 2 is a flowchart of a multimedia data backup method according to a second embodiment of the present invention;
fig. 3 is a flowchart of a multimedia data backup method according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a multimedia data backup device according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a server according to a fifth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a multimedia data backup method according to an embodiment of the present invention, where the present embodiment is applicable to a situation where a backup rate of multimedia data is dynamically adjusted in units of domains according to a source domain to which a collection device of the multimedia data belongs, so as to implement a timely backup of the multimedia data.
As shown in fig. 1, the multimedia data backup method provided in this embodiment may include:
s110, receiving a data backup task of at least one source end domain.
In this embodiment, a user may first acquire multimedia Data by using a Data acquisition device, for example, taking a picture or recording a video by using an internet protocol CAMERA (IPC, IP CAMERA), and then encode the acquired multimedia Data and send the encoded multimedia Data to a storage device for storage. When there are a large number of data acquisition devices, the user may group the data acquisition devices according to the attribute information of the data acquisition devices, one group corresponding to one source-side domain. Illustratively, the attribute information of the data acquisition devices in the same source end domain is the same or nearly the same, so as to reduce the difference between the attribute information of the data acquisition devices in each source end domain as much as possible and improve the effectiveness and convenience of the unified backup management. Multiple data management servers may be included in the same source domain.
When the data backup requirement exists, the source end domain is taken as a unit, a data backup task is generated based on the multimedia data needing to be backed up in the source end domain, and then the data backup task is issued to a server (or called a destination end) for execution.
S120, distributing the current target write flow of the server in at least one source end domain according to the backup priority of each source end domain.
The backup priority of each source end domain is determined according to the data retention period corresponding to the data acquisition devices in each source end domain and the number of the data acquisition devices. The data retention period refers to a time that can be retained after the multimedia data is generated before it is overwritten. For example, if the data retention period corresponding to the data acquisition device in each source end domain is shorter, the higher the probability that the multimedia data in the source end domain is covered is, the higher the backup priority of the source end domain is; if the number of the data acquisition devices included in each source end domain is larger, the amount of the multimedia data to be backed up in the source end domain is considered to be larger, and the backup priority of the source end domain is considered to be higher. The higher backup priority of the source domain means that when the multimedia data is backed up, the condition is preferentially provided so that the multimedia data of the source domain is backed up in time.
The current target write flow of the server is used for measuring the current performance of the server in the multimedia data backup process, and specifically may refer to the maximum network flow actually adopted when the server writes multimedia data currently, or the actually adopted flow exceeding a first flow threshold, where the first flow threshold may be adaptively set according to specific situations. For example, assuming that the standard maximum write traffic supported by the server is D (belongs to a fixed value), and the actual maximum traffic currently supported by the server is determined to be E according to the service currently executed by the server, the current target write traffic G of the server is the minimum value between the standard maximum write traffic D and the actual maximum traffic currently supported, that is, G is MIN (D, E). In the multimedia data backup process, the actual maximum flow rate E currently supported by the server belongs to a dynamically changing amount, and is related to services executed by the server, for example, services such as data playback, data download, and the like currently executed by the server.
After receiving data backup tasks of a plurality of source end domains, a server may determine backup priorities of the source end domains according to data retention periods and the number of data acquisition devices corresponding to the data acquisition devices in each source end domain, and then sequentially allocate current target write traffic of the server to each source end domain according to the backup priorities from high to low, for example, the higher the backup priority is, the more traffic allocated to the source end domain is, the lower the backup priority is, the less traffic allocated to the source end domain is, where a traffic limit specifically allocated to each source end domain may be set according to an actual situation, and this embodiment is not specifically limited. By considering the backup priority of the source terminal domain, the effect of treating multimedia data to be backed up in a differentiated mode can be achieved, and timely backup before the multimedia data are covered is ensured.
S130, determining the backup flow of each source end domain according to the flow distributed by each source end domain and the current target transmission flow of each source end domain.
The current target transmission traffic of each source end domain is used for measuring the current performance of each source end domain in the multimedia data backup process, and specifically may refer to an actual maximum traffic that can be borne by each source end domain when multimedia data transmission is currently performed, or an actual transmission traffic that exceeds a second traffic threshold, where the second traffic threshold may be adaptively set according to a specific situation. In the process of transmitting multimedia data, the current target transmission flow of each source end domain belongs to a dynamically changing amount, and is related to services such as data playback, data downloading and the like currently executed by each source end.
Assuming that the current target transmission traffic of each source end domain is B, and the traffic allocated to each source end domain by the server is a, the backup traffic C currently capable of being adopted by each source end domain is the minimum value of the current target transmission traffic B and the allocated traffic a, that is, C is MIN (a, B).
S140, determining the backup rate of the current multimedia data in each source end domain according to the backup flow of each source end domain, the number of data acquisition devices included in each source end domain and the target data transmission speed of each source end domain.
The target data transmission speed of each source end domain may be the maximum data transmission speed supported by each source end domain or a preset transmission speed set according to the current requirement, and the maximum data transmission speed may be preferred. And determining the backup rate of the current multimedia data in each source end domain, namely determining the backup rate of the multimedia data acquired by each data acquisition device in each source end domain. The backup rates of the multimedia data collected by the data collection devices in the same source end domain are the same. The backup rate of the multimedia data corresponding to the plurality of data acquisition devices is integrally adjusted by taking the domain as a unit, compared with the method for adjusting the backup rate of the multimedia data one by one aiming at a single data acquisition device, the adjustment of the backup rate is more stable and reasonable, the adjustment randomness introduced in the process of adjusting one by one can be avoided, the timeliness of the backup of the multimedia data is further ensured, and the backup effect is ensured.
Specifically, determining the backup rate of the current multimedia data in each source end domain according to the backup flow of each source end domain, the number of data acquisition devices included in each source end domain, and the target data transmission speed of each source end domain includes:
if the backup flow of each source end domain is larger than or equal to the product of the number of the data acquisition devices included in each source end domain and the target data transmission speed of each source end domain, determining the target data transmission speed of each source end domain as the backup speed of the current multimedia data in each source end domain;
and if the backup flow of each source end domain is smaller than the product of the number of the data acquisition devices included in each source end domain and the target data transmission speed of each source end domain, determining the backup rate of the current multimedia data in each source end domain according to the ratio of the current target transmission flow of each source end domain to the target data transmission speed of each source end domain.
For example, it is assumed that the number of data acquisition devices that need to perform data backup in a source end domain is N, the target data transmission speed at which the source end domain performs data transmission is F speed, and when the target data transmission speed F is the maximum data transmission speed, the target data transmission speed is usually fixed, for example, the source end domain can support 16-speed transmission code streams at maximum, and the current backup traffic of the source end domain is C and the current target transmission traffic of the source end domain is B.
If C > is Nx (F times speed), the multimedia data corresponding to each data acquisition device in the source end domain are backed up according to the F times speed;
if C is present<Nx (F speed), the multimedia data corresponding to each data acquisition device in the source end domain is backed up according to B/(F speed), and the integer ratio corresponding to B/(F speed) meets the requirement of speed value supported by the source end domain, for example, the data transmission speed supported by the source end domain includes 2nThe speed (n is an integer value) is 1 speed, 2 speed, 4 speed, 8 speed, 16 speed, 32 speed, etc., B/(F speed) corresponds toThe integer ratio needs to be one of the aforementioned speed multiplier values.
And S150, executing a data backup task according to the backup rate. That is, the multimedia data to be backed up in each source domain is stored in the server.
On the basis of the above technical solution, optionally, if the ratio of the current target transmission traffic of each source end domain to the target data transmission speed thereof is a non-integer, determining the backup rate of the current multimedia data in each source end domain according to the ratio of the current target transmission traffic of each source end domain to the target data transmission speed thereof, includes:
determining the backup rate of the current multimedia data in each source end domain according to the integer part of the ratio, thereby realizing the balanced distribution of the transmission flow among the data acquisition devices of each source end domain when the multimedia data are backed up;
correspondingly, the method further comprises the following steps: and distributing the flow corresponding to the remainder part of the ratio in other source end domains according to the backup progress of the multimedia data in other source end domains except the current source end domain.
For example, assuming that the current target transmission flow B of a source end domain is 100M, the target data transmission multiple speed when the source end domain performs data transmission is 6 times speed, and the flow of the remainder part corresponding to 100M/6 is 4M, the 4M flow is distributed in other source end domains, so as to fully utilize the network flow, adjust the backup rate of the multimedia data in each source end domain in real time, and ensure the backup effect of the multimedia data.
Further, according to the backup progress of multimedia data in other source end domains except the current source end domain, distributing the flow corresponding to the remainder part of the ratio in the other source end domains, including:
if the backup progress of the multimedia data in other source end domains is the same, distributing the flow corresponding to the remainder part of the ratio in other source end domains according to a preset distribution rule, wherein the preset distribution rule comprises random distribution of the flow or flow distribution according to the backup priority of the source end domain;
and if the backup progress of the multimedia data in other source end domains is different, distributing the flow corresponding to the remainder part of the ratio in the other source end domains according to the sequencing result of the backup progress.
The data backup task for each source-side domain is a continuous generation and execution process. Each source domain may correspond to a plurality of data backup tasks according to factors such as a preset data backup period and the amount of multimedia data to be backed up. The data backup progress is used for measuring the amount of the multimedia data which are completely backed up according to the data backup requirement. If in the process of backing up the multimedia data, the backing-up progress of the multimedia data in other source end domains except the current source end domain is the same, that is, the data backup efficiency of the data acquisition devices in other source end domains is basically the same, at this time, the flow corresponding to the remainder part of the ratio can be distributed in other source end domains according to a preset distribution rule, for example, the flow is randomly distributed or distributed according to the backup priority of the source end domain, and the like, and can be determined according to specific requirements; if the backup schedules of the multimedia data in other source end domains except the current source end domain are different, the data backup efficiency corresponding to the data acquisition device in the source end domain with the fast backup schedule of the multimedia data is high, and the data backup effect corresponding to the data acquisition device in the source end domain with the slow backup schedule of the multimedia data is low, the flow corresponding to the remainder part of the ratio can be preferentially distributed to the source end domain with the slow backup schedule of the multimedia data, so that the source end domain with the slow backup schedule of the multimedia data can utilize more network flow to improve the backup schedule of the multimedia data, and the multimedia data in the source end domain is prevented from being covered before the backup is completed.
The technical scheme of the embodiment firstly allocates the current target write flow of the server in at least one source end domain according to the backup priority of each source end domain, then determines the backup rate of the current multimedia data in each source end domain according to the allocated flow of each source end domain, the current target transmission flow of each source end domain, the number of data acquisition devices included in each source end domain and the target data transmission speed of each source end domain, realizes the effect of dynamically adjusting the backup rate of the multimedia data in each source end domain by taking the source end domains as units by considering network diversity, solves the problem of poor data backup effect caused by randomness in the backup rate adjusting process based on packet loss test in the prior art, fully utilizes network bandwidth, maximizes the data backup capability of the server, and improves the backup efficiency of the multimedia data, the condition that the multimedia data is covered because the multimedia data is not backed up in time can be effectively prevented; moreover, the consideration of the current target write flow of the server and the current target transmission flow of the source end domain in the dynamic adjustment of the backup rate is equivalent to the consideration of the overall performance of the backup source end and the server, so that the rationality of the adjustment of the backup rate is ensured.
Example two
Fig. 2 is a flowchart of a multimedia data backup method according to a second embodiment of the present invention, which is further optimized and expanded based on the above-mentioned embodiments. As shown in fig. 2, the method may include:
s210, receiving a data backup task of at least one source end domain.
S220, distributing the current target write flow of the server in at least one source end domain according to the backup priority of each source end domain.
Optionally, allocating, in at least one source domain, a current target write traffic of a server according to the backup priority of each source domain, includes: and distributing the current target write flow of the server in at least one source end domain according to the backup priority of each source end domain and the weight coefficient corresponding to each priority.
The weight coefficients can be adaptively set according to the division of the backup priority, and the higher the backup priority is, the larger the corresponding weight coefficient is. Illustratively, the traffic allocated by the server to each source-side domain is (current target write traffic of the server) x (weight coefficient corresponding to the source-side domain backup priority).
S230, determining the backup flow of each source end domain according to the flow distributed by each source end domain and the current target transmission flow of each source end domain.
S240, determining the backup rate of the current multimedia data in each source end domain according to the backup flow of each source end domain, the number of data acquisition devices included in each source end domain and the target data transmission speed of each source end domain.
And S250, detecting the multimedia data in each source end domain according to a preset detection strategy.
The preset detection strategy is used for defining rules for detecting the multimedia data to be backed up, and comprises setting conditions such as detection sequence, detection times, detection period and the like aiming at the data acquisition device. The purpose of multimedia data detection is to determine whether the state of the source domain is normal or not, and whether a backup operation of the multimedia data can be performed or not. The detection operation comprises the retrieval of multimedia data in each source end domain and the signaling negotiation in the process of acquiring code streams from the data acquisition device. The purpose of the retrieval is to confirm that there is multimedia data to be backed up in the respective data acquisition devices of each source-side domain.
S260, aiming at the source end domain with the detection failure, stopping the data backup task of the source end domain, and reallocating the flow which is already distributed to the source end domain with the detection success according to the backup priority of each source end domain.
S270, aiming at the source end domain which is successfully detected, executing the data backup task of the source end domain according to the backup rate determined after the flow is redistributed.
It should be noted that, for the source domain that has successfully detected, after the server reallocates the traffic for the source domain, a new backup rate is determined, and the detection operation of the multimedia data in the source domain does not need to be repeatedly executed, that is, as shown in fig. 2, after the operation S260 jumps to the operation S230, the operation S250 may be skipped, and the operation S240 directly jumps to the operation S270.
Illustratively, one or more data acquisition devices are randomly selected from each source end domain as a target data acquisition device, multimedia data in the target data acquisition device is detected, if the detection is successful, the current source end domain is considered to be in a normal state, the multimedia data in the source end domain can be backed up according to a determined backup rate, and the successful detection comprises successful multimedia data retrieval and successful signaling negotiation in the process of acquiring a code stream. If the detection of the multimedia data in the target data acquisition device fails, including the multimedia data retrieval failure and the signaling negotiation failure in the code stream acquisition process, the current source end domain is considered to be abnormal preliminarily, the multimedia data detection is repeatedly executed on the target data acquisition device for a plurality of times, for example, repeated detection for 3 times, if the detection result is still failed, the state of the current source end domain is determined to be abnormal, the data backup task of the current source end domain is stopped, the flow which is already distributed to the current source end domain is redistributed to the source end domain which is successfully detected according to the backup priority of each source end domain, and therefore the effective utilization rate of the network flow is improved.
In this embodiment, by performing exception handling with one source end domain as a whole, compared with a case where error retry is performed only for a single data acquisition device according to an exponential backoff algorithm, the performance of the source end domain can be considered as a whole, randomness of backup rate adjustment is reduced, stability of the backup rate adjustment is ensured, efficiency of the backup rate adjustment is improved, and a backup effect is ensured.
On the basis of the above technical solution, optionally, the method further includes:
and if the source end domain which fails to detect is recovered from the abnormal state, distributing the current target write flow of the server for the source end domain according to the current target transmission flow of the source end domain which is recovered until the backup progress of the multimedia data of the source end domain which is recovered by the state reaches the average backup progress of each source end domain.
The server may detect the multimedia data in real time after receiving the data backup task. After the source end domain which fails to detect is recovered from the abnormal state, the multimedia data backup progress of the source end domain is delayed relative to other source end domains, at this time, according to the current target transmission flow of the source end domain which is recovered from the state, more flows are distributed to the source end domain from the current target writing flow of the server as much as possible until the multimedia data backup progress reaches the average backup progress of each current source end domain, so that the multimedia data backup efficiency of the source end domain which is recovered from the state is improved, the multimedia data backup progress of the source end domain is improved in a short time, and the multimedia data are prevented from being covered due to untimely backup.
Further, if the source end domain of the state recovery includes at least two, distributing the current target write traffic of the server to the source end domain of the state recovery according to the current target transmission traffic of the source end domain of the state recovery, including: and distributing the current target write flow of the server for the source end domains with at least two state recoveries according to the backup priority of the source end domains with at least two state recoveries.
That is, if there are multiple source end domains recovering from the abnormality at the same time, determining the backup priorities of the multiple source end domains, and sequentially allocating current target write flows of the server to the multiple source end domains according to the backup priorities from high to low, so that the multiple source end domains can improve the backup progress of the multimedia data in a short time by using higher flows.
According to the technical scheme of the embodiment, before executing the data backup task according to the backup rate of each source end domain, the multimedia data in each source end domain is detected according to a preset detection strategy, the data backup task of the source end domain is stopped aiming at the source end domain with failed detection, and the flow which is already distributed to the source end domain is redistributed to the source end domain with successful detection according to the backup priority of each source end domain; aiming at the source end domain which is successfully detected, the data backup task of the source end domain is executed according to the backup rate determined after the flow is redistributed, so that the effective management of the multimedia data backup task by taking the domain as a unit is realized, the network bandwidth is fully utilized, the data backup capability of the server is maximized, and the condition that the multimedia data is covered because the multimedia data is not backed up in time can be effectively prevented; and after the source end domain recovers from the abnormal state, the source end domain with the recovered state is preferentially distributed with more traffic, the multimedia data backup progress is improved, and the risk of covering the multimedia data is reduced.
EXAMPLE III
Fig. 3 is a flowchart of a multimedia data backup method provided in the third embodiment of the present invention, which is further extended based on the above embodiments, specifically, the present embodiment takes as an example that a current target write traffic of a server refers to a maximum network traffic actually adopted when the server currently writes multimedia data, a current target transmission traffic of each source end domain refers to an actual maximum traffic that can be borne when each source end domain currently performs multimedia data transmission, and a target data transmission speed of each source end domain is a maximum data transmission speed. As shown in fig. 3, the method may include:
s301, determining the standard maximum write flow of the server.
For example, when the server starts to run, since there is no execution of data playback, data download, and other services, the standard maximum write traffic (or referred to as standard maximum write performance) of the server may be determined by randomly writing a piece of data in the storage area of the server, and recording is performed.
S302, determining the target data transmission speed of each source end domain.
When each source end domain is just started, a preset number of data acquisition devices are randomly selected in the source end domain to perform data transmission test, so that the target data transmission speed of each source end domain is determined, and the preset number can be set adaptively. For example, the data acquisition devices in each source domain may be randomly numbered, and data transmission tests may be performed one by one according to the numbers until a stream taking error occurs or all the data acquisition devices participate in the test, and a target data transmission multiple speed (i.e., a maximum data transmission multiple speed) of each source domain is determined according to the data transmission multiple speed obtained by each data acquisition device participating in the data transmission test, and is recorded, so that the target data transmission multiple speed is used as a reference for subsequent multiple speed adjustment.
For example, when performing a data transmission test on each selected data acquisition device, 2 may be performed in sequencenData transmission test of multiple speed (n is integer value), such as 1 multiple speed, 2 multiple speed, 4 multiple speed, 8 multiple speed, 16 multiple speed and 32 multiple speed, etc., until a stream error is fetched or 32 multiple speed is tried in a certain data transmission test process, recording the multiple supported by each source terminal domain after the data transmission test is finishedAnd (4) speed.
S303, determining the actual maximum flow currently supported by the server according to the service condition currently executed by the server, and determining the current target write flow of the server by combining the standard maximum write flow of the server.
S304, receiving the data backup task of each source end domain.
For example, if the user selects to backup the multimedia data generated between dates 1/5/6 in 2019, a data backup task is generated for each source domain divided by the user in advance according to the multimedia data in the selected period.
S305, distributing the current target write flow of the server in each source end domain according to the backup priority of each source end domain.
S306, determining the current target transmission flow currently supported by each source end domain according to the current service condition executed by each source end domain.
In the process of performing a data transmission test on each source end domain, simultaneously performing multimedia data backup of a plurality of data acquisition devices on each source end domain, and when a flow taking error occurs or the flow of the source end domain is not increased, taking the current flow as a target transmission flow (namely the actual maximum transmission flow which can be borne currently) supported by the current source end domain.
S307, determining the backup flow of each source end domain according to the flow distributed by each source end domain and the current target transmission flow of each source end domain.
In addition, a preset proportion, for example, 80%, of the current target transmission traffic of each source end domain may also be used as the maximum backup traffic of each source end domain in the current round of multimedia data backup process. Subsequently, if the source end domain has an abnormal state, the backup traffic of the source end domain is reduced according to the number of occurrences of the abnormal state, for example, the reduced backup traffic may be determined according to a half of a product of a backup rate of a current data acquisition device in each source end domain and a code rate (e.g., IPC code rate) of the data acquisition device, and the reduced backup traffic in the source end domain is allocated to other source end domains. If the backup flow is reduced, each source end domain is successfully backed up within a preset time (for example, within half an hour), and no backup abnormality occurs, the current backup flow of the source end domain is attempted to be adjusted upwards, for example, the lowest code rate of a data acquisition device in the source end domain is increased, so that the backup flow in each source end domain is repeatedly adjusted.
S308, determining the backup rate of the current multimedia data in each source end domain according to the backup flow of each source end domain, the number of data acquisition devices included in each source end domain and the target data transmission speed of each source end domain.
S309, retrieving the multimedia data in each source domain. The purpose of the retrieval is to confirm that there is multimedia data to be backed up in the respective data acquisition devices of each source-side domain.
S310, aiming at the source end domain which fails in retrieval, stopping the data backup task of the source end domain, and reallocating the flow which is already distributed to the source end domain which succeeds in retrieval according to the backup priority of each source end domain.
It should be noted that, for the source domain that is successfully retrieved, after the server reallocates the traffic for the source domain, a new backup rate is determined, and the retrieving operation of the multimedia data in the source domain does not need to be repeatedly executed, that is, as shown in fig. 3, after jumping to operation S307 from operation S310, operation S309 may be skipped, and operation S308 directly jumps to operation S311.
S311, aiming at the source end domain which is successfully retrieved, if the signaling negotiation fails in the negotiation process of obtaining the code stream, the source end domain is considered to have abnormity, the data backup task of the source end domain is stopped, and the flow which is already distributed to the source end domain is redistributed to the source end domain which is successfully negotiated by the signaling in the negotiation process of obtaining the code stream according to the backup priority of each source end domain.
Illustratively, there are currently 10 source end domains to which multimedia data backup needs to be performed, and 10 data collection devices exist in each source end domain. If the abnormal conditions comprise a retrieval failure and a streaming signaling negotiation failure after the multimedia data retrieval and the streaming signaling negotiation are executed on the data acquisition devices in each source end domain, then continuing to execute the abnormal detection on one or more data acquisition devices in the source end domain with the abnormal conditions, for example, repeatedly executing the abnormal detection for multiple times according to a preset time period (for example, 5 minutes), and if the detection result is still abnormal, reallocating the flow distributed to the source end domain by the server to other source end domains without the abnormal conditions, namely, the source end domains with the successful retrieval and the successful streaming signaling negotiation, so that the multimedia data backup is carried out on the source end domains without the abnormal conditions.
When the abnormal source end domain recovers from the abnormal state, the abnormal limit of the source end domain is removed, the average backup progress of the multimedia data in other source end domains is determined, more flow is distributed to the abnormally recovered source end domain, the backup progress of the multimedia data is promoted in a shorter time, the average backup progress is reached in the latest backup time, and the multimedia data is prevented from being covered due to untimely backup.
S312, aiming at the source end domain successfully negotiated by the signaling in the negotiation process of the acquired code stream, executing the data backup task of the source end domain according to the backup rate determined after the flow is redistributed.
The technical scheme of the embodiment allocates flow to each source end domain through the server according to the backup priority of each source end domain, then determines the backup rate of the current multimedia data in each source end domain by combining the current target transmission flow of each source end domain, the number of data acquisition devices included in each source end domain and the target data transmission speed of each source end domain, and reallocates the flow allocated to the abnormal source end domain to other source end domains without abnormality when the source end domains are abnormal, thereby realizing the effect of dynamically adjusting the backup rate of the multimedia data in each source end domain by taking the source end domains as a unit by considering network diversity, solving the problem of poor data backup effect caused by randomness in the backup rate adjusting process based on packet loss test in the prior art, fully utilizing network bandwidth, and maximizing the data backup capability of the server, the condition that the multimedia data is covered because the multimedia data is not backed up in time can be effectively prevented; moreover, the consideration of the current target write flow of the server and the current target transmission flow of the source end domain in the dynamic adjustment of the backup rate is equivalent to the consideration of the overall performance of the backup source end and the server, so that the rationality of the adjustment of the backup rate is ensured.
Example four
Fig. 4 is a schematic structural diagram of a multimedia data backup device according to a fourth embodiment of the present invention, which is applicable to a situation where a backup rate of multimedia data is dynamically adjusted in units of domains according to a source domain to which a collection device of the multimedia data belongs, so as to implement a timely backup of the multimedia data. The device can be implemented in software and/or hardware and can be integrated on a server, such as a backup management server.
As shown in fig. 4, the multimedia data backup apparatus provided in this embodiment may include a data backup task receiving module 410, a target write traffic allocating module 420, a backup traffic determining module 430, a backup rate determining module 440, and a data backup task executing module 450, where:
a data backup task receiving module 410, configured to receive a data backup task of at least one source domain;
a target write traffic distribution module 420, configured to distribute, in at least one source domain, a current target write traffic of a server according to the backup priority of each source domain;
a backup flow determining module 430, configured to determine a backup flow of each source end domain according to the flow allocated to each source end domain and the current target transmission flow of each source end domain;
a backup rate determining module 440, configured to determine a backup rate of current multimedia data in each source end domain according to the backup flow of each source end domain, the number of data acquisition devices included in each source end domain, and a target data transmission speed of each source end domain, where the backup rates of multimedia data acquired by data acquisition devices in the same source end domain are the same;
and a data backup task execution module 450, configured to execute a data backup task according to the backup rate.
Optionally, the backup priority of each source domain is determined according to the data retention period and the number of data collection devices corresponding to the data collection device in each source domain.
Optionally, the backup rate determining module 440 includes a first backup rate determining unit and a second backup rate determining unit, where:
a first backup rate determining unit, configured to determine a target data transmission multiple speed of each source end domain as a backup rate of current multimedia data in each source end domain if a backup flow of each source end domain is greater than or equal to a product of the number of data acquisition devices included in each source end domain and the target data transmission multiple speed of each source end domain;
and the second backup rate determining unit is used for determining the backup rate of the current multimedia data in each source end domain according to the ratio of the current target transmission flow of each source end domain to the target data transmission speed of the source end domain if the backup flow of each source end domain is smaller than the product of the number of the data acquisition devices included in each source end domain and the target data transmission speed of each source end domain.
Optionally, if the ratio of the current target transmission traffic of each source domain to the target data transmission multiple speed of each source domain is a non-integer, the second backup rate determining unit is specifically configured to:
determining the backup rate of the current multimedia data in each source end domain according to the integer part of the ratio;
correspondingly, the device also comprises:
and the remainder flow distribution module is used for distributing the flow corresponding to the remainder part of the ratio in other source end domains according to the backup progress of the multimedia data in other source end domains except the current source end domain.
Optionally, the remainder flow distribution module includes:
the first remainder flow distribution unit is used for distributing the flow corresponding to the remainder part of the ratio in other source end domains according to a preset distribution rule if the backup progress of the multimedia data in other source end domains is the same;
and the second remainder flow distribution unit is used for distributing the flow corresponding to the remainder part of the ratio in other source end domains according to the sequencing result of the backup progress if the backup progresses of the multimedia data in other source end domains are different.
Optionally, the target write traffic allocation module 420 is specifically configured to:
and distributing the current target write flow of the server in at least one source end domain according to the backup priority of each source end domain and the weight coefficient corresponding to each priority.
Optionally, before the data backup task execution module executes the operation of executing the data backup task according to the backup rate, the apparatus further includes:
the multimedia data detection module is used for detecting the multimedia data in each source end domain according to a preset detection strategy in the backup process of the multimedia data;
and the data backup task stopping module is used for stopping the data backup task of the source end domain aiming at the source end domain with failed detection, and reallocating the flow which is already distributed to the source end domain with successful detection according to the backup priority of each source end domain, so that the data backup task is executed aiming at the source end domain with successful detection according to the determined backup rate after the flow is reallocated.
Optionally, the apparatus further comprises:
and the source end domain abnormity recovery module is used for distributing the current target write flow of the server for the source end domain according to the current target transmission flow of the source end domain with the state recovery if the source end domain with the detection failure recovers from the abnormal state until the backup progress of the multimedia data of the source end domain with the state recovery reaches the average backup progress of each source end domain.
Optionally, if the source end domains for state recovery include at least two, the source end domain exception recovery module is specifically configured to:
and distributing the current target write flow of the server for the source end domains with at least two state recoveries according to the backup priority of the source end domains with at least two state recoveries.
The multimedia data backup device provided by the embodiment of the invention can execute the multimedia data backup method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. Reference may be made to the description of any method embodiment of the invention not specifically described in this embodiment.
EXAMPLE five
Fig. 5 is a schematic structural diagram of a server according to a fifth embodiment of the present invention. FIG. 5 illustrates a block diagram of an exemplary server 512 suitable for use in implementing embodiments of the present invention. The server 512 shown in fig. 5 is only an example and should not bring any limitations to the function and scope of the use of the embodiments of the present invention. The server 512 may specifically be a backup management server.
As shown in FIG. 5, the server 512 is in the form of a general purpose server. Components of server 512 may include, but are not limited to: one or more processors 516, a storage device 528, and a bus 518 that couples the various system components including the storage device 528 and the processors 516.
The server 512 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by server 512 and includes both volatile and nonvolatile media, removable and non-removable media.
A program/utility 540 having a set (at least one) of program modules 542 may be stored, for example, in storage 528, such program modules 542 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may include an implementation of a network environment. The program modules 542 generally perform the functions and/or methods of the described embodiments of the invention.
The server 512 may also communicate with one or more external devices 514 (e.g., keyboard, pointing terminal, display 524, etc.), with one or more terminals that enable a user to interact with the server 512, and/or with any terminals (e.g., network card, modem, etc.) that enable the server 512 to communicate with one or more other computing terminals. Such communication may occur via input/output (I/O) interfaces 522. Further, server 512 may communicate with one or more networks (e.g., a Local Area Network (LAN), Wide Area Network (WAN), and/or a public Network such as the Internet) via Network adapter 520. As shown in FIG. 5, the network adapter 520 communicates with the other modules of the server 512 via the bus 518. It should be appreciated that although not shown, other hardware and/or software modules may be used in conjunction with the server 512, including but not limited to: microcode, end drives, Redundant processors, external disk drive Arrays, RAID (Redundant Arrays of Independent Disks) systems, tape drives, and data backup storage systems, among others.
The processor 516 executes various functional applications and data processing by running programs stored in the storage device 528, for example, implementing a multimedia data backup method provided by any embodiment of the present invention, the method may include:
receiving a data backup task of at least one source domain;
distributing the current target write flow of the server in at least one source end domain according to the backup priority of each source end domain;
determining the backup flow of each source end domain according to the flow distributed by each source end domain and the current target transmission flow of each source end domain;
determining the backup rate of the current multimedia data in each source end domain according to the backup flow of each source end domain, the number of data acquisition devices included in each source end domain and the target data transmission speed of each source end domain;
and executing the data backup task according to the backup rate.
EXAMPLE six
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a multimedia data backup method according to any embodiment of the present invention, where the method may include:
receiving a data backup task of at least one source domain;
distributing the current target write flow of the server in at least one source end domain according to the backup priority of each source end domain;
determining the backup flow of each source end domain according to the flow distributed by each source end domain and the current target transmission flow of each source end domain;
determining the backup rate of the current multimedia data in each source end domain according to the backup flow of each source end domain, the number of data acquisition devices included in each source end domain and the target data transmission speed of each source end domain;
and executing the data backup task according to the backup rate.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or terminal. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (12)
1. A method for backing up multimedia data, comprising:
receiving a data backup task of at least one source domain;
distributing the current target write flow of the server in at least one source end domain according to the backup priority of each source end domain;
determining the backup flow of each source end domain according to the flow distributed by each source end domain and the current target transmission flow of each source end domain;
determining the backup rate of the current multimedia data in each source end domain according to the backup flow of each source end domain, the number of data acquisition devices included in each source end domain and the target data transmission speed of each source end domain;
and executing the data backup task according to the backup rate.
2. The method of claim 1, wherein the backup priority of each source domain is determined according to a data retention period and a number of data collection devices corresponding to the data collection devices in each source domain.
3. The method of claim 1, wherein determining the backup rate of the current multimedia data in each source end domain according to the backup traffic of each source end domain, the number of data acquisition devices included in each source end domain, and the target data transmission speed of each source end domain comprises:
if the backup flow of each source end domain is larger than or equal to the product of the number of the data acquisition devices included in each source end domain and the target data transmission speed of each source end domain, determining the target data transmission speed of each source end domain as the backup speed of the current multimedia data in each source end domain;
and if the backup flow of each source end domain is smaller than the product of the number of the data acquisition devices included in each source end domain and the target data transmission speed of each source end domain, determining the backup rate of the current multimedia data in each source end domain according to the ratio of the current target transmission flow of each source end domain to the target data transmission speed of each source end domain.
4. The method of claim 3, wherein if the ratio of the current target transmission traffic of each source end domain to the target data transmission multiple speed thereof is a non-integer, the determining the backup rate of the current multimedia data in each source end domain according to the ratio of the current target transmission traffic of each source end domain to the target data transmission multiple speed thereof comprises:
determining the backup rate of the current multimedia data in each source end domain according to the integer part of the ratio;
correspondingly, the method further comprises the following steps:
and distributing the flow corresponding to the remainder part of the ratio in other source end domains according to the backup progress of the multimedia data in other source end domains except the current source end domain.
5. The method of claim 4, wherein the allocating the traffic corresponding to the remainder portion of the ratio in the other source end domains according to the backup progress of the multimedia data in the other source end domains except the current source end domain comprises:
if the backup progress of the multimedia data in the other source end domains is the same, distributing the flow corresponding to the remainder part of the ratio in the other source end domains according to a preset distribution rule;
and if the backup progress of the multimedia data in the other source end domains is different, distributing the flow corresponding to the remainder part of the ratio in the other source end domains according to the sequencing result of the backup progress.
6. The method of claim 1, wherein the allocating, in the at least one source domain, a current target write traffic of a server according to the backup priority of each source domain comprises:
and distributing the current target write flow of the server in the at least one source end domain according to the backup priority of each source end domain and the weight coefficient corresponding to each priority.
7. The method of claim 1, wherein prior to performing the data backup task according to the backup rate, the method further comprises:
detecting the multimedia data in each source end domain according to a preset detection strategy;
and stopping the data backup task of the source end domain aiming at the source end domain with failed detection, and reallocating the flow which is already distributed to the source end domain with successful detection according to the backup priority of each source end domain, so that the data backup task is executed aiming at the source end domain with successful detection according to the determined backup rate after the flow is reallocating.
8. The method of claim 7, further comprising:
and if the source end domain which fails in the detection is recovered from the abnormal state, distributing the current target write flow of the server for the source end domain according to the current target transmission flow of the source end domain which is recovered until the backup progress of the multimedia data of the source end domain which is recovered by the state reaches the average backup progress of each source end domain.
9. The method of claim 8, wherein if the source end domain of state recovery comprises at least two, the distributing the current target write traffic of the server to the current target transport traffic of the source end domain according to state recovery comprises:
and distributing the current target write flow of the server for the source end domains of the at least two state recoveries according to the backup priority of the source end domains of the at least two state recoveries.
10. A multimedia data backup apparatus, comprising:
the data backup task receiving module is used for receiving the data backup tasks of at least one source end domain;
the target write flow distribution module is used for distributing the current target write flow of the server in the at least one source end domain according to the backup priority of each source end domain;
the backup flow determining module is used for determining the backup flow of each source end domain according to the flow distributed by each source end domain and the current target transmission flow of each source end domain;
the backup rate determining module is used for determining the backup rate of the current multimedia data in each source end domain according to the backup flow of each source end domain, the number of the data acquisition devices included in each source end domain and the target data transmission speed of each source end domain, wherein the backup rates of the multimedia data acquired by the data acquisition devices in the same source end domain are the same;
and the data backup task execution module is used for executing the data backup task according to the backup rate.
11. A server, comprising:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement the method of multimedia data backup as claimed in any of claims 1-9.
12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method of backing up multimedia data according to any one of claims 1 to 9.
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