How to Resolve ZFS Mount-Point Problems

1. Boot the system from a failsafe archive.

2. Import the pool.

   For example:

   # zpool import rpool

3. Look for incorrect temporary mount points.

   For example:

   # zfs list -r -o name,mountpoint rpool/ROOT/s10u6 NAME MOUNTPOINT rpool/ROOT/s10u6 /.alt.tmp.b-VP.mnt/ rpool/ROOT/s10u6/zones /.alt.tmp.b-VP.mnt//zones rpool/ROOT/s10u6/zones/zonerootA /.alt.tmp.b-VP.mnt/zones/zonerootA

   The mount point for the root BE (rpool/ROOT/s10u6) should be /.

   If the boot is failing because of /var mounting problems, look for a similar incorrect temporary mount point for the /var dataset.

4. Reset the mount points for the ZFS BE and its datasets.

   For example:

   # zfs inherit -r mountpoint rpool/ROOT/s10u6 # zfs set mountpoint=/ rpool/ROOT/s10u6

5. Reboot the system.

   When the option to boot a specific boot environment is presented, either in the GRUB menu or at the OpenBoot PROM prompt, select the boot environment whose mount points were just corrected.