CN105337762A - File sharing method supporting automatic failover - Google Patents
File sharing method supporting automatic failover Download PDFInfo
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- CN105337762A CN105337762A CN201510627266.3A CN201510627266A CN105337762A CN 105337762 A CN105337762 A CN 105337762A CN 201510627266 A CN201510627266 A CN 201510627266A CN 105337762 A CN105337762 A CN 105337762A
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- Prior art keywords
- client
- server
- backup server
- file
- master server
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
Abstract
The invention discloses a file sharing method supporting automatic failover. The method comprises the steps that file sharing connection between a client side and a master server is established, and a heartbeat line between the master server and a backup server is abnormal when the master server shut down; the backup server detects abnormality of the heartbeat line and determines that the master server cannot provide a normal file sharing service; the backup server transmits a fault notification to the client side; the client side receives the fault notification and redirects original file sharing connection to the backup server; and file sharing connection between the client side and the backup server is established. Acceleration of the switching process of the file sharing service is realized by the method so that working efficiency is enhanced.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of file sharing method supporting automatic fault to switch.
Background technology
At present, in common file-sharing service environment, in order to ensure the high availability of share service, usually file-sharing service is adopted to the mode of active and standby two-shipper, detected the state of the other side each other by heartbeat between active and standby machine, and the disk space that the mode active and standby machine access back end passing through mounting SAN disk array is identical.External share directory space is provided under normal circumstances by master server, client is accessed shared by the mode being connected to master server, when the faults such as machine of delaying when master server can not provide and externally serve, backup server detects abnormality by heartbeat.
Due to master server fault, after client to the file-sharing session time-out of master server, client could find the exception that former session links, session is redirected to backup server, the time experienced due to this passively discover session timeout is longer, and upper strata can be caused to depend on the application of file-sharing extremely.Therefore the switching flow required time of file-sharing service is oversize, and speed is too slow, affects operating efficiency.
Information due to former session is generally held in the internal memory of master server, and after master server delays machine, these conversation recording information can be lost in the lump.Although Share interlinkage is redirected to backup server by subsequent client, but backup end is due to without original session record, this connection can be treated as brand-new session, can not ensure that original shares the consistency of session, thus cause upper strata to depend on the application of file-sharing service extremely.
Summary of the invention
The object of this invention is to provide a kind of file sharing method supporting automatic fault to switch, to realize the switching flow accelerating file-sharing service, increase work efficiency.
For solving the problems of the technologies described above, the invention provides a kind of file sharing method supporting automatic fault to switch, the method comprises:
Client and master server are set up file-sharing and are connected, and when master server delays machine, the heartbeat circuit between master server and backup server occurs abnormal;
It is abnormal that described backup server detects that heartbeat circuit occurs, determines that described master server cannot provide normal file-sharing service;
Described backup server sends signalling trouble to client;
Described client receives described signalling trouble, original file-sharing is connected and redirects to described backup server;
Described client is set up file-sharing with described backup server and is connected;
Wherein, be connected by heartbeat circuit between described master server and backup server, described master server and backup server are all connected with rear end shared disk.
Preferably, described client with set up after file-sharing is connected between master server, also comprise:
Session information between client and master server is recorded in the shared disk of rear end as persistent handle information by master server.
Preferably, described persistent handle information is the unique identification information of shared session.
Preferably, described client receives described signalling trouble, original file-sharing is connected after redirecting to described backup server, also comprises:
Described backup server reads persistent handle information from the shared disk of rear end, utilizes the session connection state of persistent handle Information recovering client.
Preferably, described client with set up after file-sharing is connected between master server, also comprise:
The listed files information opened, reading writing information and file locking information are recorded in the shared disk of rear end by described client.
Preferably, described client and master server are set up after file-sharing is connected, and also comprise:
The network address list of described client query master server and backup server;
The network port state of described client query master server and backup server.
Preferably, described backup server sends signalling trouble to client, comprising:
The network address of described backup server record client and ID numbering generate the log-on message of client, send signalling trouble according to described log-on message to client.
Preferably, described backup server also comprises before sending signalling trouble to client:
Described client sends heartbeat data packets by timing to described backup server and judges that whether the link that transmission fault notifies is unobstructed.
A kind of file sharing method supporting automatic fault to switch provided by the present invention, client and master server are set up file-sharing and are connected, and when master server delays machine, the heartbeat circuit between master server and backup server occurs abnormal; It is abnormal that described backup server detects that heartbeat circuit occurs, determines that described master server cannot provide normal file-sharing service; Described backup server sends signalling trouble to client; Described client receives described signalling trouble, original file-sharing is connected and redirects to described backup server; Described client is set up file-sharing with described backup server and is connected; Wherein, be connected by heartbeat circuit between described master server and backup server, described master server and backup server are all connected with rear end shared disk.Visible, when master server delays machine, backup server detects exception, and send signalling trouble to client, by informing that to the mode of client proactive notification master server is abnormal, thus Share interlinkage is directed to backup server by client, and need not wait for that former shared session time-out occurs and just finds that service is abnormal, thus accelerate the switch speed of Share interlinkage, avoid upper strata abnormal to the application of response timeout time-sensitive, so realize the switching flow accelerating file-sharing service, increase work efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the flow chart of a kind of file sharing method supporting automatic fault to switch provided by the present invention.
Embodiment
Core of the present invention is to provide a kind of file sharing method supporting automatic fault to switch, and to realize the switching flow accelerating file-sharing service, increases work efficiency.
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, Fig. 1 is the flow chart of a kind of file sharing method supporting automatic fault to switch provided by the present invention, and the method comprises:
S11: client and master server are set up file-sharing and be connected, when master server delays machine, the heartbeat circuit between master server and backup server occurs abnormal;
Wherein, set up after file-sharing is connected between client with master server, the session information between client and master server is recorded in the shared disk of rear end as persistent handle information by master server.Persistent handle information is the unique identification information of shared session.
Wherein, be connected by heartbeat circuit between master server and backup server, master server and backup server are all connected with rear end shared disk.
S12: it is abnormal that backup server detects that heartbeat circuit occurs, determines that master server cannot provide normal file-sharing service;
S13: backup server sends signalling trouble to client;
Wherein, the network address of backup server record client and ID numbering generate the log-on message of client, send signalling trouble according to log-on message to client.
When master server breaks down, backup server sends signalling trouble to client, namely backup server informs client by the mode of proactive notification, file-sharing is connected by client and redirects to backup server, to maintain the clock availability of former Share interlinkage session.
S14: client receives signalling trouble, connects original file-sharing and redirects to backup server;
Wherein, client receives signalling trouble, and original file-sharing connected after redirecting to backup server, backup server reads persistent handle information from the shared disk of rear end, utilizes the session connection state of persistent handle Information recovering client.
Client is when being connected to master server, by write rear end shared disk lasting for session handle, instead of deposit in chaacter memory, after generation service switches, backup server reads persistent handle information from disk, for identifying that original file-sharing session connects, the consistency of former session connection can be maintained when Share interlinkage is directed to backup end by client.
S15: client and backup server are set up file-sharing and be connected;
Optionally, set up after file-sharing is connected between client with master server, the listed files information opened, reading writing information and file locking information are recorded in the shared disk of rear end by client.
Client and master server are set up after file-sharing is connected, and client can also inquire about the network address list of master server and backup server, the network port state of client query master server and backup server.
Wherein, before backup server sends signalling trouble to client, client sends heartbeat data packets by timing to backup server and judges that whether the link that transmission fault notifies is unobstructed.
Concrete, when master server delays machine, backup server detects exception, and send signalling trouble to client, by informing that to the mode of client proactive notification master server is abnormal, thus Share interlinkage is directed to backup server by client, and need not wait for that former shared session time-out occurs and just finds that service is abnormal, thus accelerate the switch speed of Share interlinkage, avoid upper strata abnormal to the application of response timeout time-sensitive, so realize the switching flow accelerating file-sharing service, increase work efficiency.
In addition, the session being redirected to backup server in order to identify customer end is former session, instead of treat as newly-built session, when client's side link is to master server, server is using the shared disk of session label information as persistent handle information write rear end, this shared disk can be the disk space of rear end SAN array, and active and standby server all can be accessed.When after backup server adapter master server shared service, the persistent handle information of rear end shared disk can be read, after connection is redirected to backup server by client, backup server recognizes this by inquiry persistent handle information and is one and reconnects session, thus not as a newly-built Dialog processing, maintain the clock availability of former Share interlinkage session, avoid newly-built session to cause the exception of upper layer application.
In prior art, session information is recorded in the internal memory of master server, and when master server delays machine, session information is lost, when client's side link is to backup server, can treat as new session, thus to cause in client the exceptions such as some service application interruption.
And client is recorded to the shared disk of rear end by the method to the session information of server as persistent handle information, persistent handle information is as the unique identification information of shared session, and the information such as the listed files also client opened in addition, read and write position, file locking charge to rear end shared disk.After backup server reads persistent handle information from rear end shared disk, again the session connection state of client can be recovered, the process that Share interlinkage is redirected to backup server by client can be identified as one and recover session, and not by as a new session process.Therefore, by the conversation recording message notice of master server to backup server, effect ensures sharing in indirect handoff procedure, maintain the clock availability of former Share interlinkage session, do not affect service application client depending on share service, the mode namely by storing persistent handle information on disk ensures the continuation of former shared session.
Concrete, during for support master server fault, backup server, to the function of client proactive notification, namely sends signalling trouble, needs to realize following several operation:
(1) using network interface list is obtained;
This operation is initiated to master server by client, and inquiry master server and the list of backup server network addresses available, and the upstate etc. of the network port, for when master server breaks down, be switched to backup server by link address.
(2) registered problems notification service;
This operation is initiated to backup server by client, and backup server, by record client network address, Id numbering etc., notifies to client end according to log-on message when master server is abnormal.
Client completes after the registration of backup server, enter listening state, waiting for the abnormal announcement information that backup server sends, for detecting the abnormality that this connects, heartbeat data packets regularly can occurring for judging that whether notifying link is unimpeded between client and server.
(3) asynchronous fault notification message is sent.
This operation is initiated to client by backup server, when heartbeat link between main file server and backup file server occurs abnormal, backup server determines master server cannot provide normal file-sharing service, then send signalling trouble asynchronous message to client, i.e. signalling trouble, after client receives signalling trouble, original file-sharing is connected and is redirected to backup server, and do not need to wait for former Share interlinkage access time-out, thus accelerate the failover speed of Share interlinkage.
A kind of file sharing method supporting automatic fault to switch provided by the present invention, client and master server are set up file-sharing and are connected; When master server delays machine, the heartbeat circuit between master server and backup server occurs abnormal; It is abnormal that backup server detects that heartbeat circuit occurs, determines that master server cannot provide normal file-sharing service; Backup server sends signalling trouble to client; Client receives signalling trouble, original file-sharing is connected and redirects to backup server; Client and backup server are set up file-sharing and are connected; Wherein, be connected by heartbeat circuit between master server and backup server, master server and backup server are all connected with rear end shared disk.Visible, when master server delays machine, backup server detects exception, and send signalling trouble to client, by informing that to the mode of client proactive notification master server is abnormal, thus Share interlinkage is directed to backup server by client, and need not wait for that former shared session time-out occurs and just finds that service is abnormal, thus accelerate the switch speed of Share interlinkage, avoid upper strata abnormal to the application of response timeout time-sensitive, so realize the switching flow accelerating file-sharing service, increase work efficiency.
And, client is recorded to the shared disk of rear end by the method to the session information of server as persistent handle information, persistent handle information is as the unique identification information of shared session, after backup server reads persistent handle information from rear end shared disk, again the session connection state of client can be recovered, the process that Share interlinkage is redirected to backup server by client can be identified as a recovery session, and not by as a new session process, maintain the clock availability of former Share interlinkage session, avoid newly-built session to cause the exception of upper layer application.
Above a kind of file sharing method supporting automatic fault to switch provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection range of the claims in the present invention.
Claims (8)
1. support to it is characterized in that the file sharing method that automatic fault switches, comprising:
Client and master server are set up file-sharing and are connected, and when master server delays machine, the heartbeat circuit between master server and backup server occurs abnormal;
It is abnormal that described backup server detects that heartbeat circuit occurs, determines that described master server cannot provide normal file-sharing service;
Described backup server sends signalling trouble to client;
Described client receives described signalling trouble, original file-sharing is connected and redirects to described backup server;
Described client is set up file-sharing with described backup server and is connected;
Wherein, be connected by heartbeat circuit between described master server and backup server, described master server and backup server are all connected with rear end shared disk.
2. the method for claim 1, is characterized in that, described client with set up after file-sharing is connected between master server, also comprise:
Session information between client and master server is recorded in the shared disk of rear end as persistent handle information by master server.
3. method as claimed in claim 2, it is characterized in that, described persistent handle information is the unique identification information of shared session.
4. method as claimed in claim 2, it is characterized in that, described client receives described signalling trouble, original file-sharing is connected after redirecting to described backup server, also comprises:
Described backup server reads persistent handle information from the shared disk of rear end, utilizes the session connection state of persistent handle Information recovering client.
5. the method for claim 1, is characterized in that, described client with set up after file-sharing is connected between master server, also comprise:
The listed files information opened, reading writing information and file locking information are recorded in the shared disk of rear end by described client.
6. the method for claim 1, is characterized in that, described client and master server are set up after file-sharing is connected, and also comprise:
The network address list of described client query master server and backup server;
The network port state of described client query master server and backup server.
7. as the method in claim 1 to 6 as described in any one, it is characterized in that, described backup server sends signalling trouble to client, comprising:
The network address of described backup server record client and ID numbering generate the log-on message of client, send signalling trouble according to described log-on message to client.
8. as the method in claim 1 to 6 as described in any one, it is characterized in that, described backup server also comprises before sending signalling trouble to client:
Described client sends heartbeat data packets by timing to described backup server and judges that whether the link that transmission fault notifies is unobstructed.
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| CN108280238A (en) * | 2018-03-02 | 2018-07-13 | 于刚 | Computer shared file emergency backup method |
| CN109257229A (en) * | 2018-10-25 | 2019-01-22 | 网宿科技股份有限公司 | A kind of main/standby switching method and device |
| CN109783280A (en) * | 2019-01-15 | 2019-05-21 | 上海海得控制系统股份有限公司 | Shared memory systems and shared storage method |
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| CN110333972A (en) * | 2019-07-03 | 2019-10-15 | 深信服科技股份有限公司 | Shared disk management method, device, equipment and storage medium |
| CN110688057A (en) * | 2018-07-05 | 2020-01-14 | 阿里巴巴集团控股有限公司 | Distributed storage method and device |
| CN112905394A (en) * | 2021-03-05 | 2021-06-04 | 上海上讯信息技术股份有限公司 | Method and equipment for preventing single point of failure based on shared storage |
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