This section describes the preparations that are required for backing up and restoring ZFS storage pools.
For details on each procedure and a setup required in advance for using AdvancedCopy Manager, refer to "Chapter 6 Replication" and the "ETERNUS SF Operation Guide for Copy Control Module".
Whereas this document states some typical methods for controlling ZFS for your reference, refer to the operating system manuals for more details on usage.
Point
Below examples of command execution are based on the configurations described for replication operations and AdvancedCopy Manager CCM operations in "G.3.2 System configuration". Adapt any real control actions to your actual configuration.
Implement the following procedures for preparation:
Fetching lists of devices in storage pools
Check the devices that constitute the storage pools to be backed up.
[Example]
Check the disk information of the storage pool. In below example, storage pool (STP1) consists of 1 physical disk (c1t1d1s0), and storage pool (STP2) consists of 2 physical disks (c1t1d2, c1t1d3).
# zpool status STP1
pool: STP1
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
STP1 ONLINE 0 0 0
c1t1d1s0 ONLINE 0 0 0
errors: No known data errors
#
# zpool status STP2
pool: STP2
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
STP2 ONLINE 0 0 0
c1t1d2 ONLINE 0 0 0
c1t1d3 ONLINE 0 0 0
errors: No known data errors |
Copy settings of AdvancedCopy Manager
Register the combinations of backup sources and targets in AdvancedCopy Manager.
Register the devices you checked in above procedure as copy source volumes, and the devices you prepared as backup target volumes as copy destination volumes.
Since these are controlled synchronously in processing for backup and restoration, you have to register all devices that constitute a storage pool as 1 group. For details on controlling groups, refer to "6.4.7 Creating groups".
[Example]
Specify the copy source and destination volumes to create the groups for storage pools STP1 and STP2.
With the disks constituting storage pool STP1 as the copy source volume, create group "STP1".
With the disks constituting storage pool STP2 as the copy source volume, create group "STP2".
# /opt/FJSVswsrp/bin/swsrpsetvol -o BOTH -Xgroup STP1 -Xvtoc /dev/dsk/c1t1d1s2@SV-1 /dev/dsk/c1t1d11s2@BKSV swsrpsetvol completed # /opt/FJSVswsrp/bin/swsrpsetvol -o BOTH -Xgroup STP2 /dev/dsk/c1t1d2@SV-1 /dev/dsk/c1t1d12@BKSV swsrpsetvol completed # /opt/FJSVswsrp/bin/swsrpsetvol -o BOTH -Xgroup STP2 /dev/dsk/c1t1d3@SV-1 /dev/dsk/c1t1d13@BKSV swsrpsetvol completed # /opt/FJSVswsrp/bin/swsrpvolinfo -L Server Original-Volume Size Replica-Volume Size Copy Op-Server Group SV-1 /dev/dsk/c1t1d1s2@SV-1 4.0 Gbyte /dev/dsk/c1t1d11s2@BKSV 4.0 Gbyte bi-direction both STP1 SV-1 /dev/dsk/c1t1d2@SV-1 4.0 Gbyte /dev/dsk/c1t1d12@BKSV 4.0 Gbyte bi-direction both STP2 SV-1 /dev/dsk/c1t1d3@SV-1 4.0 Gbyte /dev/dsk/c1t1d13@BKSV 4.0 Gbyte bi-direction both STP2 |
Point
For backup of system areas, you have to specify the entire disks (c1t1d1s2) which contain system areas. Specify the -Xvtoc option for including the VTOC area.
Register the devices you checked in above procedure as copy source, and the devices you prepared as backup targets as copy destinations.
Since these are controlled synchronously in processing for backup and restoration, you have to register all devices that constitute a storage pool as 1 group. For details on controlling groups, refer to "Creating copy groups" and "Adding copy pairs" in the "ETERNUS SF Operation Guide for Copy Control Module".
Creation of copy groups
Create a copy group for each storage pool that is to be backed up.
[Example]
Create group "STP1" for storage pool STP1, and group "STP2" for STP2. (Copying type: OPC)
# acgroup create -g STP1 -type OPC -a DX440 Successful completion. # # acgroup create -g STP2 -type OPC -a DX440 Successful completion. |
Registration of copy pairs
In the created copy groups, register the combinations of copy sources and destinations. Register all devices that constitute a storage pool.
[Example]
With the disks constituting storage pool STP1 as the copy source, register the pairs of copy sources and targets in group "STP1".
With the disks constituting storage pool STP2 as the copy source, register the pairs of copy sources and targets in group "STP2".
# acpair add -g STP1 -p DX440/0x01:DX440/0x11 Successful completion. # acpair add -g STP2 -p DX440/0x02:DX440/0x12 Successful completion. # acpair add -g STP2 -p DX440/0x03:DX440/0x13 Successful completion. |
