Scrub ZFS root pool

Question

Does anyone see any issue in having a cron job that scrubs the ZFS root pool rpool periodically?
Let's say every Sunday at midnight (00:00 of Sunday).

Answer 1

Hi ,
What you need to do is very easy here is a procedure that i use:
1)  make a snapshot off the rpool
       zfs snapshot -r rpool@<snapshotname>
2) send that snapshot somewhere safe
       zpool destroy rpool/dump<snapshotname>
       zpool destroy rpool/swap@<snapshotname>
       zpool send -R rpool@<snapshotname | gzip > /net/<ipaddress>/<share>/<snapshotname>.gz
3) Once the above is done you can do the following.
     Boot from DVD make sure you ahe a disk available and start creating the rpool.
     The rpool can be created with EFI or SMI label
     so for example to use EFI label zpool create c0d0
                           to use SMI label zpool create c0d0s0 => make sure that the disk is labeled and that all cylinders are in s0.
4) create a new boot env
      zpool create rpool <disk>
5) import the data again.
     gzcat /mnt/<snapshotname>.qz | zfs receive -Fv rpool
      zfs create -V 4G rpool/dump
     zfs create -V 4G rpool/swap
6) check a list off bootenv
        beadm list
        beadm mount <bootenv> /tmp/mnt
        bootadm install-bootloader -P rpool
       devfsadm -Cn -r /tmp/mnt
       touch /tmp/mnt/reconfigure
       beadm umount <bootenv>
       beadm activate <bootenv>
This is for Solaris 11 but it also works for Solaris 10 only the last part number 6 is different.
I need to look this up again but if i remember again you need to set the following for solaris 10 bootfs that needs to be set on the rpool
If you want i have a script that makes a backup off the rpool towards a nfs share.
Hope this helps
Regards
Filip