CN111625193A - Configuration method, device, equipment and medium of multipath alias - Google Patents
Configuration method, device, equipment and medium of multipath alias Download PDFInfo
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- CN111625193A CN111625193A CN202010445705.XA CN202010445705A CN111625193A CN 111625193 A CN111625193 A CN 111625193A CN 202010445705 A CN202010445705 A CN 202010445705A CN 111625193 A CN111625193 A CN 111625193A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0629—Configuration or reconfiguration of storage systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
Abstract
The invention discloses a configuration method of multipath alias, when newly added block equipment is inserted, the name of the block equipment on a storage device can be obtained, and the multipath equipment is named and configured according to a naming mode that the name of the block equipment is used as a component of the multipath alias; the multipath alias is specifically the name of the multipath device generated by the block device mapping on the host. Therefore, when the host fails, the block equipment corresponding to the failure on the storage equipment can be quickly and accurately determined according to the multipath alias of the equipment with the failure on the host side, the failure source on the storage equipment side can be positioned without manual identification of operation and maintenance personnel, and the workload of the operation and maintenance personnel is reduced; meanwhile, the generation of misoperation is avoided. In addition, the invention provides a configuration device, equipment and a storage medium of the multipath alias, which correspond to the method.
Description
Technical Field
The present invention relates to the field of storage technologies, and in particular, to a method, an apparatus, a device, and a medium for configuring a multipath alias.
Background
The multi-path technique can use more than one physical path to access the network storage device and provide higher availability and performance advantages for the network storage system through fault tolerance, I/O traffic load balancing and even finer grained I/O scheduling strategies. In the storage network environment, the method is widely applied. In the Linux operating system platform, a multipath structure uses multiple paths on the top layer by creating a virtual device, and the virtual device is composed of block devices established by hardware subsystems.
In the prior art, multipath-tools are configured on a Linux operating system platform to realize multipath support of a storage device. When the multi-path configuration is carried out, the block device name of the storage device side can be customized by a user, and the multi-path alias of the block device mapped on the host side adopts a default name automatically allocated by a system.
However, with the prior art multipath naming method, a multipath alias will not be the same as the corresponding block device name. Therefore, when the host fails, the faulty block device on the storage device side cannot be determined according to the multipath alias of the faulty device on the host side, and the fault source on the storage device side can be located only by manual identification of the operation and maintenance personnel, so that the workload of the operation and maintenance personnel is increased, misoperation is easy to occur, and the faulty block device cannot be determined quickly and accurately.
Disclosure of Invention
The invention aims to provide a configuration method, a device, equipment and a medium of a multipath alias, which can be used for naming and configuring multipath equipment according to a naming mode that a block equipment name is used as a component of the multipath alias. Therefore, the multi-path alias contains the name of the block device, so that the corresponding block device on the storage device can be directly determined through the multi-path alias. When the host computer fails, the block equipment corresponding to the failure on the storage equipment can be quickly and accurately determined according to the multipath alias of the equipment with the failure on the host computer side, the failure source on the storage equipment side can be positioned without manual identification of operation and maintenance personnel, and the workload of the operation and maintenance personnel is reduced; meanwhile, the generation of misoperation is avoided.
In order to solve the above technical problem, the present invention provides a method for configuring a multipath alias, including:
judging whether a newly added block device is inserted;
if yes, acquiring the name of the block device on the storage device;
naming and configuring the multipath equipment according to a naming mode of taking the block equipment name as a component of a multipath alias; the multi-path alias is specifically the name of the multi-path device generated on the host by mapping the block device.
Preferably, the determining whether there is a newly added block device insertion specifically includes:
judging whether the captured system message is an insertion block device message;
if the message is the inserting block device message, acquiring a global identifier of the block device corresponding to the inserting block device message;
determining whether the global identifier is already present in a multi-path alias configuration file;
if not, it is determined that a newly added block device is inserted.
Preferably, the determining whether the captured system message is an insertion block device message specifically includes:
capturing system information by adopting a Netlink communication mechanism;
judging whether the message type of the system message is an insertion block device;
if yes, the system message is the insertion block device message.
Preferably, the naming configuration for the multipath device specifically includes:
judging whether the current time is the starting time of the timer or not;
and if so, naming and configuring the multipath equipment.
Preferably, the method further comprises the following steps:
judging whether an updating message for updating the multi-path alias is received;
and if so, updating the multi-path alias into the block device name of the corresponding block device on the storage device.
Preferably, the method further comprises the following steps:
and when the acquisition of the block device name fails, configuring the multipath alias according to manufacturer information and sequence information of the block device.
Preferably, the obtaining of the name of the block device on the storage device is specifically:
and acquiring the name of the block device from the storage device through an in-band SCSI channel.
In order to solve the above technical problem, the present invention further provides a configuration apparatus for a multipath alias, including:
the judging module is used for judging whether a newly added block device is inserted; if yes, triggering an acquisition module;
the acquisition module is used for acquiring the name of the block device on the storage device;
the configuration module is used for naming and configuring the multipath equipment according to a naming mode of taking the block equipment name as a component of a multipath alias; the multi-path alias is specifically the name of the multi-path device generated on the host by mapping the block device.
In order to solve the above technical problem, the present invention further provides a configuration device for multipath aliases, including a memory for storing a computer program;
a processor configured to implement the steps of the method of configuring a multi-path alias as described in any one of the above when the computer program is executed.
In order to solve the above technical problem, the present invention further provides a computer-readable storage medium, having a computer program stored thereon, where the computer program is executed by a processor to implement the steps of the configuration method of the multipath alias as described in any one of the above.
The configuration method of the multipath alias provided by the invention can acquire the block device name of the block device on the storage device when a newly added block device is inserted, and perform naming configuration on the multipath device according to the naming mode of taking the block device name as the component of the multipath alias; the multipath alias is specifically the name of the multipath device generated by the block device mapping on the host. Therefore, the multi-path alias contains the name of the block device, so that the corresponding block device on the storage device can be directly determined through the multi-path alias. When the host computer fails, the block equipment corresponding to the failure on the storage equipment can be quickly and accurately determined according to the multipath alias of the equipment with the failure on the host computer side, the failure source on the storage equipment side can be positioned without manual identification of operation and maintenance personnel, and the workload of the operation and maintenance personnel is reduced; meanwhile, the generation of misoperation is avoided.
In addition, the configuration device, the equipment and the storage medium of the multipath alias provided by the invention correspond to the method, and have the same beneficial effects.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a flowchart of a configuration method of a multipath alias according to an embodiment of the present invention;
fig. 2 is a block diagram of a configuration apparatus for a multipath alias according to an embodiment of the present invention;
fig. 3 is a block diagram of a configuration device for a multipath alias according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
The core of the invention is to provide a configuration method, a device, equipment and a medium of multipath aliases, which can carry out naming configuration on multipath equipment according to a naming mode that a block equipment name is used as a component of the multipath aliases. Therefore, the multi-path alias contains the name of the block device, so that the corresponding block device on the storage device can be directly determined through the multi-path alias. When the host computer fails, the block equipment corresponding to the failure on the storage equipment can be quickly and accurately determined according to the multipath alias of the equipment with the failure on the host computer side, the failure source on the storage equipment side can be positioned without manual identification of operation and maintenance personnel, and the workload of the operation and maintenance personnel is reduced; meanwhile, the generation of misoperation is avoided.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a flowchart of a configuration method of a multipath alias according to an embodiment of the present invention; as shown in fig. 1, a method for configuring a multipath alias according to an embodiment of the present invention includes steps S101 to S103:
step S101: judging whether a newly added block device is inserted; if yes, go to step S102;
it should be noted that the newly added block device may be understood as a block device that does not generate a mapping. In a specific implementation, the determining whether a newly added block device is inserted specifically includes:
judging whether the captured system message is an insertion block device message;
if the message is the inserting block device message, acquiring a global identifier of the block device corresponding to the inserting block device message;
determining whether a global identifier already exists in a multipath alias configuration file;
if not, it is determined that a newly added block device is inserted.
Specifically, a Netlink communication mechanism may be adopted to capture a system message, determine whether a message type of the system message is an insertion block device, and if the message type is the insertion block device, indicate whether the captured system message is an insertion block device message. When an inserted block device message is captured, a global identifier (WWID) of a block device specified for insertion in the inserted block device message is acquired. It will be appreciated that if the block device has previously completed mapping, the WWID of the block device should be recorded in the multipath alias configuration file. Therefore, it is possible to determine whether the block device is an inserted newly added block device by determining whether the acquired WWID already exists in the multipath alias profile.
Step S102: acquiring the name of the block device on the storage device;
step S103: naming and configuring the multipath equipment according to a naming mode of taking the block equipment name as a component of a multipath alias; the multipath alias is specifically the name of the multipath device generated by the block device mapping on the host.
In one embodiment, when it is determined that the inserted block device is the newly added block device, the block device name of the block device on the storage device may be obtained. Note that the block device name is a name of the block device on the storage device side. The block device name may be obtained from the storage device via an in-band SCSI channel.
In one embodiment, the block device name is used as a component of the multipath alias, and the multipath device is configured by naming, so that the multipath alias contains the block device name, and the corresponding block device can be directly determined through the multipath alias. The multipath alias provided by the present invention may be the same as the block device name, or may include other information in addition to the block device name. For example, the acquired block device name is "vdisk name", and may be set to "vdisk name" or "vdisk name wwid" when configuring the multipath alias. Those skilled in the art can set the method according to the actual application situation, and the embodiment of the present invention is not limited.
In a specific implementation, the naming configuration of the multipath device specifically includes:
judging whether the current time is the starting time of the timer or not;
if so, naming configuration is carried out on the multipath equipment.
It can be understood that the multi-path device can be configured in batch naming at regular time, so that when the device is added in batch, the multi-path alias is only needed to be reconfigured once, and the efficiency of naming configuration is improved. Specifically, a timer is preset, and when the starting time of the timer is reached, all the currently acquired multipath devices to be named are subjected to unified naming configuration. The timer can be set by a person skilled in the art according to the actual application condition, and can be a periodic timer which is started once at equal time intervals, for example, the periodic timer is started once every ten minutes, and the naming configuration of the multipath equipment is completed uniformly; the aperiodic timers with a plurality of starting moments preset can also be preset, for example, the starting timers at the tenth minute, the thirty minute, the ninety minute and the like are preset, so as to complete the naming configuration of the multipath device in each time period.
The configuration method of the multipath alias provided by the invention can acquire the block device name of the block device on the storage device when a newly added block device is inserted, and perform naming configuration on the multipath device according to the naming mode of taking the block device name as the component of the multipath alias; the multipath alias is specifically the name of the multipath device generated by the block device mapping on the host. Therefore, the multi-path alias contains the name of the block device, so that the corresponding block device on the storage device can be directly determined through the multi-path alias. When the host computer fails, the block equipment corresponding to the failure on the storage equipment can be quickly and accurately determined according to the multipath alias of the equipment with the failure on the host computer side, the failure source on the storage equipment side can be positioned without manual identification of operation and maintenance personnel, and the workload of the operation and maintenance personnel is reduced; meanwhile, the generation of misoperation is avoided.
In an embodiment, the method for configuring a multipath alias provided in the embodiment of the present invention further includes:
judging whether an updating message for updating the multi-path alias is received;
if so, the multi-path alias is updated to the block device name of the corresponding block device on the storage device.
Specifically, for a block device that has completed mapping, there is already a corresponding multi-path alias on the host. Whether the multi-path alias needs to be updated may be determined by determining whether an update message is received. When receiving the update message, the device information of the block device of the multipath alias can be updated according to the requirement specified by the update message, the corresponding block device name is obtained, and the multipath alias is updated to the block device name. Therefore, the flexibility of updating the multi-path aliases is improved, and the multi-path aliases can be updated at any time according to actual requirements.
In one embodiment, the method for configuring a multipath alias provided by the present invention further includes:
and when the acquisition of the block equipment name fails, configuring the multipath alias according to the manufacturer information and the sequence information of the block equipment.
Specifically, when the block device name fails to be acquired due to an abnormal condition, the multi-path alias cannot be configured according to the corresponding configuration multi-path alias of the block device name, and the multi-path alias can be configured according to the manufacturer information and the sequence information of the block device, so that the information of the manufacturer can be intuitively known through the multi-path alias. For example, a multi-path name may be set as "vendor name-device serial number" which is the number of devices produced by the vendor for the block. Furthermore, abnormal information used for indicating that the block device name acquisition fails can be generated for feedback, so that operation and maintenance personnel can find abnormal conditions in time.
The invention also provides a configuration device of the multipath alias and an embodiment corresponding to the configuration device of the multipath alias. It should be noted that the present invention describes the embodiments from two perspectives, one is based on the functional module, and the other is based on the hardware.
Fig. 2 is a block diagram of a configuration apparatus for a multipath alias according to an embodiment of the present invention; as shown in fig. 2, an apparatus for configuring a multipath alias according to an embodiment of the present invention includes:
a judging module 10, configured to judge whether a newly added block device is inserted; if yes, triggering an acquisition module;
an obtaining module 11, configured to obtain a name of a block device of the block device on the storage device;
the configuration module 12 is configured to name and configure the multipath device according to a naming mode that uses the block device name as a component of the multipath alias; the multipath alias is specifically the name of the multipath device generated by the block device mapping on the host.
In an embodiment, the apparatus for configuring a multipath alias according to an embodiment of the present invention further includes:
the updating module is used for judging whether an updating message for updating the multi-path alias is received or not; if so, the multi-path alias is updated to the block device name of the corresponding block device on the storage device.
In one embodiment, the apparatus for configuring a multipath alias provided by the present invention further includes:
and the configuration module is used for configuring the multipath alias according to the manufacturer information and the sequence information of the block equipment when the acquisition of the block equipment name fails.
Since the embodiments of this section correspond to the embodiments of the method section, reference is made to the description of the embodiments of the method section for the embodiments of this section, and details are not repeated here.
When a newly added block device is inserted, the configuration device of the multipath alias can acquire the name of the block device on the storage device, and name configuration is carried out on the multipath device according to a naming mode that the name of the block device is used as a component of the multipath alias; the multipath alias is specifically the name of the multipath device generated by the block device mapping on the host. Therefore, the multi-path alias contains the name of the block device, so that the corresponding block device on the storage device can be directly determined through the multi-path alias. When the host computer fails, the block equipment corresponding to the failure on the storage equipment can be quickly and accurately determined according to the multipath alias of the equipment with the failure on the host computer side, the failure source on the storage equipment side can be positioned without manual identification of operation and maintenance personnel, and the workload of the operation and maintenance personnel is reduced; meanwhile, the generation of misoperation is avoided.
Fig. 3 is a block diagram of a configuration device for a multipath alias according to an embodiment of the present invention. As shown in fig. 3, the configuration apparatus for multi-path alias according to the embodiment of the present invention includes a memory 20 for storing a computer program;
a processor 21 for implementing the steps of the method of configuring a multi-path alias as described in any one of the above when executing a computer program.
The processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 21 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 21 may also include a main processor and a coprocessor, where the main processor is a processor for processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 21 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, the processor 21 may further include an AI (Artificial Intelligence) processor for processing a calculation operation related to machine learning.
The memory 20 may include one or more computer-readable storage media, which may be non-transitory. Memory 20 may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used for storing a computer program 201, wherein the computer program is loaded and executed by the processor 21, and then is capable of implementing relevant steps in the configuration method of the multipath alias disclosed in any one of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202, data 203, and the like, and the storage manner may be a transient storage manner or a permanent storage manner. Operating system 202 may include, among others, Windows, Unix, Linux, and the like.
In some embodiments, the configuration device for multi-path aliases may further include an input-output interface 22, a communication interface 23, a power supply 24, and a communication bus 25.
Those skilled in the art will appreciate that the architecture shown in fig. 3 does not constitute a limitation of the configuration device for multi-path aliases and may include more or fewer components than those shown.
Since the embodiment of the device portion and the embodiment of the method portion correspond to each other, please refer to the description of the embodiment of the method portion for the embodiment of the device portion, which is not repeated here. In some embodiments of the invention, the processor and memory may be connected by a bus or other means.
The configuration equipment of the multipath alias provided by the invention can realize the following method: when a newly added block device is inserted, the name of the block device on the storage device of the block device can be obtained, and the multipath device is named and configured according to a naming mode that the name of the block device is used as a component of a multipath alias; the multipath alias is specifically the name of the multipath device generated by the block device mapping on the host. Therefore, the multi-path alias contains the name of the block device, so that the corresponding block device on the storage device can be directly determined through the multi-path alias. When the host computer fails, the block equipment corresponding to the failure on the storage equipment can be quickly and accurately determined according to the multipath alias of the equipment with the failure on the host computer side, the failure source on the storage equipment side can be positioned without manual identification of operation and maintenance personnel, and the workload of the operation and maintenance personnel is reduced; meanwhile, the generation of misoperation is avoided.
Finally, the invention also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps as set forth in the above-mentioned method embodiments.
It is to be understood that if the method in the above embodiments is implemented in the form of software functional units and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and performs all or part of the steps of the methods according to the embodiments of the present invention, or all or part of the technical solution. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The foregoing details a method, an apparatus, a device, and a medium for configuring a multipath alias provided by the present invention. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A method for configuring a multi-path alias, comprising:
judging whether a newly added block device is inserted;
if yes, acquiring the name of the block device on the storage device;
naming and configuring the multipath equipment according to a naming mode of taking the block equipment name as a component of a multipath alias; the multi-path alias is specifically the name of the multi-path device generated on the host by mapping the block device.
2. The method for configuring a multi-path alias as claimed in claim 1, wherein the determining whether a new block device is inserted specifically comprises:
judging whether the captured system message is an insertion block device message;
if the message is the inserting block device message, acquiring a global identifier of the block device corresponding to the inserting block device message;
determining whether the global identifier is already present in a multi-path alias configuration file;
if not, it is determined that a newly added block device is inserted.
3. The method for configuring a multi-path alias as claimed in claim 2, wherein the determining whether the captured system message is an insert block device message specifically comprises:
capturing system information by adopting a Netlink communication mechanism;
judging whether the message type of the system message is an insertion block device;
if yes, the system message is the insertion block device message.
4. The method for configuring a multipath alias as claimed in claim 1, wherein the naming configuration for the multipath device is specifically:
judging whether the current time is the starting time of the timer or not;
and if so, naming and configuring the multipath equipment.
5. The method for configuring a multi-path alias as claimed in claim 1, further comprising:
judging whether an updating message for updating the multi-path alias is received;
and if so, updating the multi-path alias into the block device name of the corresponding block device on the storage device.
6. The method for configuring a multi-path alias as claimed in claim 1, further comprising:
and when the acquisition of the block device name fails, configuring the multipath alias according to manufacturer information and sequence information of the block device.
7. The method for configuring a multi-path alias as claimed in claim 1, wherein the obtaining of the block device name of the block device on the storage device is specifically:
and acquiring the name of the block device from the storage device through an in-band SCSI channel.
8. An apparatus for configuring a multi-path alias, comprising:
the judging module is used for judging whether a newly added block device is inserted; if yes, triggering an acquisition module;
the acquisition module is used for acquiring the name of the block device on the storage device;
the configuration module is used for naming and configuring the multipath equipment according to a naming mode of taking the block equipment name as a component of a multipath alias; the multi-path alias is specifically the name of the multi-path device generated on the host by mapping the block device.
9. A configuration device for multi-path aliases, comprising a memory for storing a computer program;
a processor for implementing the steps of the method of configuring a multi-path alias as claimed in any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, implements the steps of the method of configuring a multi-path alias as claimed in any one of claims 1 to 7.
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| CN114237719A (en) * | 2020-09-09 | 2022-03-25 | 中国联合网络通信集团有限公司 | USB flash disk identification method, system, computer equipment and storage medium |
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| CN114237719B (en) * | 2020-09-09 | 2023-11-28 | 中国联合网络通信集团有限公司 | USB flash disk identification method, system, computer equipment and storage medium |
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