zfs pool online migration

[alma21]

Hi,

is there a possibility to move/migrate a complete zfs pool online (without interruption) from one e.g. old disk array or SAN to a new one ?

 

[milew]

Yes, it is possible, but there are some limitations. If your pool is mirror add mirror, if raidz1 add raidz1

Example. You have pool zpoolxxx mirror-0 /dev/sda /dev/sdb
Add bigger disks to pool
zpool add zpoolxxx mirror /dev/sdc /dev/sdd
next
zpool remove zpoolxxx mirror-0