This section describes procedures for backing up and restoring ZFS storage pools.
For details on the settings (device settings) in advance for using AdvancedCopy Manager, or on the backup and restoration procedures, refer to "Chapter 6 Replication" or the AdvancedCopy Manager Operation Guide for Copy Control Module.
Note that the procedures and commands shown here are examples of snapshot-type copying (OPC). For using other types of copying, replace the procedures and commands as needed for each type of copying.
Whereas this document states some typical methods for controlling ZFS for your reference, refer to the operating system manuals for more details on usage.
This section shows the procedure for online backup.
No. | Description | Controlling Server | At First Backup (*1) |
|---|---|---|---|
1 | Export the backup storage pool. | Backup server | |
2 | Using AdvancedCopy Manager, back up data to a backup volume from a device in the backup storage pool. | Backup server | |
3 | Create a snapshot of the transaction storage pool. | Business server | Yes |
4 | Using AdvancedCopy Manager, back up data to a device in the backup storage pool from a device in the transaction storage pool. | Business server | Yes |
5 | Check the status of the backup storage pool. | Backup server | Yes |
*1: When you make a backup for the first time, only implement the processes indicated with "Yes".
The procedure for the online backup is as follows:
Export the backup storage pool.
For more information on export of ZFS storage pools, refer to the operating system manual.
[Example]
# zpool list NAME SIZE USED AVAIL CAP HEALTH ALTROOT STP1 345G 121M 345G 0% ONLINE - # zpool export STP1 #
Using AdvancedCopy Manager, back up the backup data on the backup storage pool to a backup volume.
Before storing backups in the backup storage pool, back up all the devices that composes the backup storage pool to a backup volume. If multiple backup volumes are used (to save backups of 2 or more generations), use any unused or oldest generation backup volumes for backups.
Specify backup group "BKSTP1" for the -Xgroup option and execute the swsrpmake command.
[Example]
# /opt/FJSVswsrp/bin/swsrpmake -Xgroup BKSTP1 GROUP=BKSTP1 swsrpmake completed #
Specify backup group "BKSTP1" for the -g option and execute the acopc start command for AdvancedCopy Manager CCM.
[Example]
# /opt/FJSVccm/bin/acopc start -g BKSTP1 DX440/0x11:DX440/0x12 # DATE : 2012/01/01 00:00:00 - << OPC Started >> # From:BoxID=303045343030304d3323232323234534353053323041232323234b44343033303633393030342323/Olu=11/Adr_high=0/Adr_low=0/size_high=0/size_low=0 # To:BoxID=303045343030304d3323232323234534353053323041232323234b44343033303633393030342323/Olu=12/Adr_high=0/Adr_low=0 Succeeded : 1 Failed : 0 #
Note
Since processing is carried out for all devices that constitute the storage pool, do not specify any copy pairs.
Create snapshots of the transaction storage pool.
Delete the snapshot that is not restored to the transaction storage pool.
To delete ZFS snapshots, refer to the operating system manual.
Execute the sync command to synchronize the transaction storage pool with the file system.
Create a file system snapshot on the transaction storage pool.
To create ZFS snapshots, refer to the operating system manual.
Execute the sync command to synchronize the transaction storage pool with the file system.
[Example]
# zfs destroy STP1@SNAP0 # sync # zfs snapshot -r STP1@SNAP0 # sync #
Using AdvancedCopy Manager, back up data to a device in the backup storage pool from a device in the transaction storage pool.
For Using Replication Management Function
Specify backup/restore group "STP1" for the -Xgroup option and execute the swsrpmake command.
[Example]
# /opt/FJSVswsrp/bin/swsrpmake -Xgroup STP1 GROUP=STP1 swsrpmake completed #
For Using AdvancedCopy Manager CCM
Specify backup/restore group "STP1" for the -g option and execute the acopc start command for AdvancedCopy Manager CCM.
[Example]
# /opt/FJSVccm/bin/acopc start -g STP1 DX440/0x01:DX440/0x11 # DATE : 2012/01/01 00:00:00 - << OPC Started >> # From:BoxID=303045343030304d3323232323234534353053323041232323234b44343033303633393030342323/Olu=01/Adr_high=0/Adr_low=0/size_high=0/size_low=0 # To:BoxID=303045343030304d3323232323234534353053323041232323234b44343033303633393030342323/Olu=11/Adr_high=0/Adr_low=0 Succeeded : 1 Failed : 0 #
Note
Since processing is carried out for all devices that constitute the storage pool, do not specify any copy pairs.
Check the status of the backup storage pool.
Import the backup storage pool on the backup server.
Export the backup storage pool on the backup server.
For more information on import/export of the ZFS storage pool, refer to the operating system manual.
[Example]
# zpool import
pool: STP1
id: 15271135801818262407
state: ONLINE
action: The pool can be imported using its name or numeric identifier.
config:
STP1 ONLINE
c2t1d11 ONLINE
# zpool import -f STP1
# zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
STP1 345G 345M 345G 0% ONLINE -
# zpool export STP1
#Note
If import/export has failed, re-execute it from step 3.
This section shows the procedure for restoration.
No. | Description | Controlling Server |
|---|---|---|
1 | Export the transaction storage pool. | Business server |
2 | When restoring data from a device in the backup storage pool, export the backup storage pool. | Backup server |
3 | Using AdvancedCopy Manager, restore data to a device in the transaction storage pool from a device in the backup storage pool or a backup volume. | Business server or Backup server |
4 | Import the transaction storage pool. | Business server |
5 | Roll back the transaction storage pool to a restored snapshot. | Business server |
6 | Mount the target ZFS file systems. | Business server |
The procedure for restoration is as follows:
If any transaction storage pool exists, export it.
For more information on export of ZFS storage pools, refer to the operating system manual.
[Example]
# zpool list NAME SIZE USED AVAIL CAP HEALTH ALTROOT STP1 345G 345M 345G 0% ONLINE - # zpool export STP1 #
When restoring data from a device in the backup storage pool, export the backup storage pool.
For more information on export of ZFS storage pools, refer to the operating system manual.
[Example]
# zpool list NAME SIZE USED AVAIL CAP HEALTH ALTROOT STP1 345G 121M 345G 0% ONLINE - # zpool export BKSTP1 #
Using AdvancedCopy Manager, restore data to a device in the transaction storage pool from a device in the backup storage pool or a backup volume.
When Restoring Data from Device in Backup Storage Pool Using Replication Management Function
Specify backup/restore group "STP1" for the -Xreverse option and the -Xgroup option and execute the swsrpmake command.
[Example]
# /opt/FJSVswsrp/bin/swsrpmake -Xgroup STP1 -Xreverse GROUP=STP1 swsrpmake completed #
When Restoring Data from Device in Backup Storage Pool Using AdvancedCopy Manager CCM
Specify backup/restore group "STP1" for the -r option and the -g option and execute the acopc start command for AdvancedCopy Manager CCM.
[Example]
# /opt/FJSVccm/bin/acopc start -g STP1 -r DX440/0x11:DX440/0x01 # DATE : 2012/01/01 00:00:00 - << OPC Started >> # From: BoxID=303045343030304d3323232323234534353053323041232323234b44343033303633393030342323/Olu=11/Adr_high=0/Adr_low=0 # To: BoxID=303045343030304d3323232323234534353053323041232323234b44343033303633393030342323/Olu=01/Adr_high=0/Adr_low=0/size_high=0/size_low=0 Succeeded : 1 Failed : 0 #
When Restoring Data from Device in Backup Volume Using Replication Management Function
Specify restore group "RSSTP1" for the -Xgroup option and execute the swsrpmake command.
[Example]
# /opt/FJSVswsrp/bin/swsrpmake -Xgroup RSSTP1 GROUP=RSSTP1 swsrpmake completed #
When Restoring Data from Device in Backup Volume Using AdvancedCopy Manager CCM
Specify restore group "RSSTP1" for the -g option and execute the acopc start command for AdvancedCopy Manager CCM.
[Example]
# /opt/FJSVccm/bin/acopc start -g RSSTP1 DX440/0x12:DX440/0x01 # DATE : 2012/01/01 00:00:00 - << OPC Started >> # From: BoxID=303045343030304d3323232323234534353053323041232323234b44343033303633393030342323/Olu=12/Adr_high=0/Adr_low=0/size_high=0/size_low=0 # To: BoxID=303045343030304d3323232323234534353053323041232323234b44343033303633393030342323/Olu=01/Adr_high=0/Adr_low=0 Succeeded : 1 Failed : 0 #
Note
Since processing is carried out for all devices that constitute the storage pool, do not specify any copy pairs.
In the transaction storage pool, import the device restored at step 3 in the restore procedure.
For information on how to import a ZFS storage pool, refer to the operating system manuals.
[Example]
# zpool import STP1 #
Roll back the transaction storage pool to a restored snapshot.
To see how to roll back the ZFS storage pool to a snapshot, refer to the operating system manual.
[Example]
For rolling back to the "SNAP1"
# zfs list -t snapshot NAME USED AVAIL REFER MOUNTPOINT STP1@SNAP1 0 - 19K - STP1@SNAP2 16M - 18K - STP1@SNAP3 32M - 18K - # zfs rollback -r STP1@SNAP1 #
Mount the target ZFS file systems.
If the ZFS file systems have not been mounted automatically by step 5, mount them manually.
For information on how to mount ZFS file systems, refer to the operating system manuals.
[Example]
# zfs mount STP1/data1 # zfs mount STP1/data2 #