Pools can also be imported using an alternate root. This feature allows for recovery situations, where the mount points should not be interpreted in context of the current root, but under some temporary directory where repairs can be performed. This feature also can be used when mounting removable media as described above.
In the following example, a pool called morpheus is imported with /mnt as the alternate root path. This example assumes that morpheus was previously exported.
# zpool import -R /a pool # zpool list morpheus NAME SIZE USED AVAIL CAP HEALTH ALTROOT pool 44.8G 78K 44.7G 0% ONLINE /a # zfs list pool NAME USED AVAIL REFER MOUNTPOINT pool 73.5K 44.1G 21K /a/pool