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|Oracle Solaris Administration: ZFS File Systems Oracle Solaris 11 Information Library|
Before you create the ZFS root pool snapshot, consider saving the following information:
Capture the root pool properties.
sysA# zpool get all rpool
Identify the size and current capacity of the root pool disk.
sysA# zpool list NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT rpool 74G 5.42G 68.6G 7% 1.00x ONLINE -
Identify the root pool components.
sysA# zfs list -r rpool NAME USED AVAIL REFER MOUNTPOINT rpool 5.48G 67.4G 75.5K /rpool rpool/ROOT 3.44G 67.4G 31K legacy rpool/ROOT/solaris 3.44G 67.4G 3.14G / rpool/ROOT/solaris/var 303M 67.4G 214M /var rpool/dump 1.01G 67.4G 1000M - rpool/export 97.5K 67.4G 32K /rpool/export rpool/export/home 65.5K 67.4G 32K /rpool/export/home rpool/export/home/admin 33.5K 67.4G 33.5K /rpool/export/home/admin rpool/swap 1.03G 67.4G 1.00G -
The following steps describe how to create a recursive snapshot of the root pool that will include all file systems in the root pool. Other non-root pools can be archived in this same way.
Consider the following points:
For complete system recovery, send the snapshots to a pool on a remote system.
Create an NFS share from the remote system and also configure ssh to allow privileged access, if necessary.
The recursive root pool snapshot is sent as one large snapshot file to a remote system, but you could send the recursive snapshots to be stored as individual snapshots on a remote system.
In the steps that follow, the recursive snapshot is named rpool@snap1. The local system to be recovered is sysA and the remote system is sysB. Note that rpool is the default root pool name and might be different on your system.
sysA# zfs snapshot -r firstname.lastname@example.org
sysA# zfs destroy email@example.com sysA# zfs destroy firstname.lastname@example.org
The swap volume does not contain data that is relevant to a system migration or recovery. Do not remove the dump volume snapshot if you wish to preserve any crash dumps.
In the following steps, the /tank/snaps file system is shared for storing the recursive root snapshot.
sysB# zfs set share=name=snapf,path=/tank/snaps,prot=nfs,root=sysA tank/snaps sysB# zfs set sharenfs=on tank/snaps
Send the recursive snapshot to the remote file system that was shared in the previous step.
sysA# zfs send -Rv email@example.com | gzip > /net/sysB/tank/snaps/ rpool.snap1.gz sending from @ to firstname.lastname@example.org sending from @ to email@example.com sending from @ to firstname.lastname@example.org sending from @ to email@example.com sending from @ to rpool/ROOT@rpool.snap1 sending from @ to rpool/ROOT/solaris@install sending from @ to rpool/ROOT/solaris@install sending from @install to rpool/ROOTfirstname.lastname@example.org sending from @ to rpool/ROOT/solaris/var@install sending from @install to rpool/ROOTemail@example.com