WO2014075586A1 - 一种jbod阵列自动恢复存储的方法和装置 - Google Patents
一种jbod阵列自动恢复存储的方法和装置 Download PDFInfo
- Publication number
- WO2014075586A1 WO2014075586A1 PCT/CN2013/086766 CN2013086766W WO2014075586A1 WO 2014075586 A1 WO2014075586 A1 WO 2014075586A1 CN 2013086766 W CN2013086766 W CN 2013086766W WO 2014075586 A1 WO2014075586 A1 WO 2014075586A1
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- WIPO (PCT)
- Prior art keywords
- disk
- storage
- array
- failed
- hot spare
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000011084 recovery Methods 0.000 claims description 6
- 238000012217 deletion Methods 0.000 claims description 4
- 230000037430 deletion Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000003213 activating effect Effects 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1076—Parity data used in redundant arrays of independent storages, e.g. in RAID systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
- G06F11/2094—Redundant storage or storage space
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
- G06F11/3034—Monitoring arrangements specially adapted to the computing system or computing system component being monitored where the computing system component is a storage system, e.g. DASD based or network based
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3055—Monitoring arrangements for monitoring the status of the computing system or of the computing system component, e.g. monitoring if the computing system is on, off, available, not available
Definitions
- the present invention relates to the field of storage technologies, and in particular, to a method and an apparatus for automatically recovering storage of a JBOD array. Background technique
- JBOD Just a Bunch Of Disks
- single disk bundle which is a type of storage array proposed in recent years and is widely used in the field of monitoring storage.
- hard disks form a JBOD array. These four physical disks are connected in series one by one to provide a large logical disk.
- the data cartridge is stored from the first hard disk.
- the storage space of the first hard disk is used up, the data is stored in the subsequent hard disk.
- JBOD storage devices In monitoring storage applications, the biggest advantage of JBOD storage devices is their low deployment cost, which is much lower than hardware RAID solutions.
- the common JBOD devices on the market often store the hard disk in a machine rejection. The multiple hard disks are merged into the shared power supply and the fan, but no additional hardware is required, and the management is relatively simple, so this is A relatively low-cost storage device is very popular among enterprises.
- JBOD has the above advantages, it also has a lot of shortcomings.
- the biggest downside is the lack of redundancy protection for disk data. If one or more disks in the array are damaged, the data on the disk will be lost forever and cannot be recovered.
- the JBOD array lacks the mechanism of automatically replacing the faulty disk by the hot spare disk, if the user does not manually replace the failed disk with the new disk, the recording data of all the storage resources on the failed disk will continue to be lost.
- the JBOD array device After the disk failure occurs, the JBOD array device reports a disk failure alarm to the storage device. On the user interface of the maintenance management, or by other means such as flashing the fault alarm light, notify the user to manually replace the faulty disk. After the user detects the disk failure of the array, manually perform the failed disk replacement. In some unattended places or time points (such as late at night), even if the device reports a disk failure alarm or the fault alarm light flashes, the user may not be able to manually replace the faulty disk of the JBOD array in time, resulting in storage resources on the failed disk. The video data is lost for a long time. Summary of the invention
- the object of the present invention is to provide a method for automatically recovering storage of a JBOD array, the method comprising: Step A: determining whether a disk in the JBOD array is faulty; Step B: if the disk fails, according to the faulty disk
- the storage resource distribution table for the storage resource having the index area on the faulty disk, deleting the storage resource, and for the storage resource having no index area but having the recorded data area on the faulty disk, updating the corresponding data area of the recorded data area
- the index area is added to the JBOD array to add the hot spare disk to the JBOD array; after the hot spare disk is added to the JBOD array, there is an index area on the failed disk.
- Store resources add and activate the storage resources.
- the method further comprises after step A:
- Step Bl When the disk fails, send a control command to remove the failed disk to the JBOD array to remove the failed disk from the JBOD array.
- the method further includes: Step C: deleting a storage resource distribution table of the faulty disk, and establishing a storage resource distribution table of the hot spare disk.
- the method further includes the following steps: Step A: After the disk is faulty, determine whether the JBOD array has an idle local hot spare disk or whether the storage device where the JBOD array is located has an idle global hot spare. Disk, if it exists, execute step B, otherwise the process ends.
- the determining whether the disk in the JBOD array is faulty is: periodic reading Take the status information of each disk in the JBOD array control block, and determine that the disk has failed when the disk status is FAULTY.
- the present invention also provides an apparatus for automatically recovering storage of a JBOD array, the apparatus comprising: a fault disk judging module for judging whether a disk is faulty; and a storage resource deleting module, configured to: after the disk fails, according to the storage of the faulty disk
- the resource distribution table is used to delete the storage resource in the storage area where the index area exists on the faulty disk.
- the index update module is configured to: after the disk fails, the storage resource has no recording area on the failed disk but has a recorded data area.
- the recovery module is configured to add and activate the storage resource after the hot spare disk is added to the JBOD array for the storage resource with the index area on the faulty disk.
- the device further includes: a fault disk removal module, configured to send a control command for removing the faulty disk to the JBOD array to remove the faulty disk from the array when the disk fails.
- a fault disk removal module configured to send a control command for removing the faulty disk to the JBOD array to remove the faulty disk from the array when the disk fails.
- the device further includes: a storage resource distribution table update module, configured to delete a storage resource distribution table of the faulty disk, and establish a storage resource distribution table of the hot spare disk.
- a storage resource distribution table update module configured to delete a storage resource distribution table of the faulty disk, and establish a storage resource distribution table of the hot spare disk.
- the device further includes: an idle hot spare disk judging module, configured to determine whether the JBOD array has an idle local hot spare disk or whether the storage device where the JBOD array is located has an idle global hot spare disk.
- an idle hot spare disk judging module configured to determine whether the JBOD array has an idle local hot spare disk or whether the storage device where the JBOD array is located has an idle global hot spare disk.
- the faulty disk determining module is configured to periodically read status information of each disk in the JBOD array control block, and determine that the disk is faulty when the disk status is FAULTY.
- the technology of the present invention can avoid the loss of video caused by the manual replacement of the disk when the disk in the JBOD array fails, and the number of manual maintenance can be reduced in some unattended places.
- Figure 1 is a schematic diagram of a JBOD array.
- 2 is a flow chart of an embodiment of the present invention.
- 3 is a logic structural diagram of an apparatus according to an embodiment of the present invention. detailed description
- the present invention provides a method of automatically replacing a faulty magnetic disk using a hot spare disk so that new recorded data can be automatically restored. The details are described below in conjunction with specific embodiments.
- a JBOD array automatic recovery storage method comprising:
- Step A Determine whether the disk in the JBOD array is faulty
- Step B If the disk fails, according to the storage resource distribution table of the faulty disk, the storage resource exists in the index area for the faulty disk, and there is no index area on the faulty disk but there is a video data area.
- the storage resource is updated to the index area corresponding to the recorded data area; the control command for adding the hot spare disk is sent to the JBOD array to add the hot spare disk to the JBOD array; after the hot spare disk is added to the JBOD array, The storage resource of the index area exists on the faulty disk, and the storage resource is added and activated.
- the judgment of the disk failure in the JBOD array can be judged by periodically reading the status information of each disk in the JBOD array control block.
- 10 response processing is performed on all writes 10 sent by the JBOD array, and all processing results of 10 writes are tracked. If an unrecoverable write 10 failure occurs on a disk of the JBOD array, the corresponding disk in the array control block is The state is set to the Faulty state. Therefore, when the status information read to the disk is Faulty, it is judged that the disk has failed.
- the storage space provided by the JBOD array is its storage resource relative to the monitoring front-end device, such as the network camera IPC.
- a storage plan is usually prepared, for example, how much storage space each monitoring front-end device allocates.
- each monitoring front-end device will have its own storage resources on the back-end storage device (JBOD array).
- the information of the storage resources in the monitoring system can be recorded through the storage resource distribution table.
- the storage The resource distribution table can be recorded in the configuration file of the storage device where the JBOD array is located.
- the disk configuration of the JBOD array and each of the storage device configuration files are recorded. Storage resource configuration on disk.
- Figure 2 shows an example of a hot spare disk automatically replacing a failed disk in a JBOD array in the event of a disk failure in the JBOD array.
- Step 20 Determine whether there is an idle hot spare disk. If yes, go to step 21. If no, the process ends.
- Step 21 it is determined whether the JBOD array currently has an idle local hot spare disk; if not, it is determined whether the storage device where the JBOD array is located currently has an idle global hot spare disk. If the array and the device do not have any hot spare disks, go to Step 21. If there are any free local hot spare disks or global hot spare disks, go to Step 21.
- a local hot spare disk refers to a hot spare disk dedicated to a JBOD array.
- a global hot spare disk refers to a hot spare disk used by a RAID array that stores storage devices for other JBOD arrays in addition to a JBOD array.
- the configuration data of the hot spare disk can be saved in the configuration file.
- Step 21 Delete the storage resource of the storage resource that exists in the index area on the faulty disk.
- Step 22 Update the index area corresponding to the recorded data area for the storage resource that has no index area on the failed disk but has a recorded data area.
- Table 1 shows the index area and video data area information of the storage resource named Resl ⁇ Res4 on the disk sdb of the JBOD array.
- Storage resource name occupies space size index area size video data area size
- the storage resource Resl has no index area on the disk sdb of the JBOD array, only the recording data area, and the storage resource Res2 ⁇ Res4 has an index area on the disk sdb. Since each storage resource must have its own index area, the index area of Resl must exist on another disk of the same JBOD array, such as sda.
- Table 2 gives an example of the distribution of Resl on disk sda:
- Each disk of the JBOD array forms a storage resource distribution table corresponding to itself, and records the distribution of all storage resources on the disk.
- the storage resource For the storage resource with the index area distributed on the faulty disk, the storage resource is deleted by the 10 control command of the storage resource deletion; for the storage resource without the index area and only the recorded data area on the faulty disk, the part of the recorded data area is according to the data.
- the lost method the related index of the index area of the relevant disk is updated, and the updated index area is swiped to the relevant disk.
- the disk sdb fails, according to the information in Table 1, the storage resources Res2, Res3, and Res4 will be deleted, and the index information corresponding to the recording data of the storage resource Resl on the disk sdb will be updated, that is, the disk sda
- the portion of the index recorded in the index area of the storage resource Resl corresponding to the recorded data of Resl on the disk sdb will be updated.
- Step 23 The disk barrier is removed from the JBOD array
- Step 24 Add the hot spare disk to the JBOD array
- For the hot spare disk send the 10 control commands to the JBOD array to add the hot spare disk. After receiving the 10 control commands, the JBOD array adds the hot spare disk to the array. The added disk location is the original location of the fault disk in the array. .
- Step 25 Perform recovery of storage resources
- the storage resource is added and activated through the 10 control commands allocated by the storage space.
- the disk storage resource distribution table of the failed disk is deleted, and the storage resource distribution table of the hot spare disk is established for the hot spare disk that has been added to the JBOD array.
- the storage system of the monitoring system re-allocates the storage space and delivers the storage plan to the front-end monitoring device, so that the new recorded data can be restored in time.
- the relevant index of the key index area of the storage resource is automatically updated, and in the case of losing part of the recorded data on the failed disk, the storage of the new recorded data is automatically restored.
- the invention can avoid the loss of video caused by the manual replacement of the disk, and can reduce the number of manual maintenance in some unattended places.
- Figure 3 shows a logical block diagram of an embodiment of an apparatus for performing the method of the present invention.
- the device is typically implemented by a processor executing a computer program in memory.
- the device description from the logical function may include: a fault disk judgment module, a storage resource deletion module, an index update module, a hot spare disk join module, and a storage resource recovery module.
- the faulty disk judging module is configured to determine whether the disk is faulty.
- the storage resource deletion module is configured to delete the storage resource of the index disk according to the storage resource distribution table of the faulty disk after the disk fails.
- the index update module is configured to update the index area corresponding to the recorded data area for a storage resource having no recorded area but a recorded data area on the failed disk after the disk fails.
- the hot spare disk is added to the module to send a hot spare disk to the JBOD array to add the hot spare disk to the array control block.
- the storage resource recovery module is configured to add and activate the storage resource to the storage resource in which the index area exists on the faulty disk after the hot spare disk is added to the JBOD array.
- the device further includes: a fault disk removal module, configured to send a control command for removing the faulty disk to the JBOD array to remove the faulty disk from the array when the disk fails.
- a fault disk removal module configured to send a control command for removing the faulty disk to the JBOD array to remove the faulty disk from the array when the disk fails.
- the device further includes: a storage resource distribution table update module, configured to delete a storage resource distribution table of the failed disk, and establish a storage resource distribution table of the hot spare disk.
- a storage resource distribution table update module configured to delete a storage resource distribution table of the failed disk, and establish a storage resource distribution table of the hot spare disk.
- the device further includes: an idle hot spare disk judging module, configured to determine whether the JBOD array has an idle local hot spare disk or a storage device in which the JBOD array is located, whether there is an idle global hot spare disk.
- the fault disk judging module is further configured to periodically read status information of each disk in the JBOD array control block, and determine that the disk is faulty when the disk status is FAULTY.
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- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US14/411,896 US9697078B2 (en) | 2012-11-13 | 2013-11-08 | Method and device for auto recovery storage of JBOD array |
Applications Claiming Priority (2)
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CN201210455316.0A CN102999399B (zh) | 2012-11-13 | 2012-11-13 | 一种jbod阵列自动恢复存储的方法和装置 |
CN2012104553160 | 2012-11-13 |
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WO2014075586A1 true WO2014075586A1 (zh) | 2014-05-22 |
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US (1) | US9697078B2 (zh) |
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Families Citing this family (8)
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CN102999399B (zh) * | 2012-11-13 | 2016-08-03 | 浙江宇视科技有限公司 | 一种jbod阵列自动恢复存储的方法和装置 |
CN105700817A (zh) * | 2014-11-27 | 2016-06-22 | 华为技术有限公司 | 一种磁盘簇jbod装置 |
US9911453B2 (en) | 2015-09-23 | 2018-03-06 | International Business Machines Corporation | Automated just a bunch of disks management |
CN105573862B (zh) * | 2015-12-11 | 2021-02-02 | 浙江大华技术股份有限公司 | 一种恢复文件系统的方法和设备 |
CN108319523A (zh) * | 2017-12-13 | 2018-07-24 | 创新科存储技术(深圳)有限公司 | 一种存储热备盘的添加方法 |
CN109189338B (zh) * | 2018-08-27 | 2021-06-18 | 郑州云海信息技术有限公司 | 一种热备盘添加的方法、系统及设备 |
CN110941604B (zh) * | 2018-09-20 | 2023-04-07 | 北京国双科技有限公司 | 一种数据存储方法及装置 |
CN115098302A (zh) * | 2022-07-18 | 2022-09-23 | 苏州浪潮智能科技有限公司 | 多控存储系统raid热备盘管理方法、系统、终端及存储介质 |
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- 2013-11-08 US US14/411,896 patent/US9697078B2/en active Active
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CN102999399B (zh) | 2016-08-03 |
US9697078B2 (en) | 2017-07-04 |
CN102999399A (zh) | 2013-03-27 |
US20150193305A1 (en) | 2015-07-09 |
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