zfs discuss - Dec 2010 - /export/home/username not mounting after legacy mounts on 11 Express

Hi,

On OpenSolaris build 134 you could:

zfs set mountpoint=legacy rpool/some/zfs

and then

mount -F zfs rpool/some/zfs /mnt_point

and then do the work, reboot and the system didn''t care.

This seems to have changed with Solaris 11 Express.

The above commands still work but whereas before I did nothing and just rebooted
and didn''t care this no longer applies.

After the two commands shown above I rebooted as usual and got the Gnome logon
prompt, logged on, and then was informed that files in /home/username could no
longer be set and then desktop just sat there.

So I rebooted and hit escape so I could watch the messages and /home/username
complained and then stopped.

So I did a zfs list and everything looked normal except that
/export/home/username was listed as legacy and  everything else was listed as
some zfs filesystem.

So then I did:

zfs set mountpoint=/export/home/username rpool/export/home/username and then
checked zfs list and everything looked good so I rebooted.

Then I got an error message stating that /export was not empty so it
couldn''t be mounted and /export/home wasn''t empty so it
couldn''t be  mounted and that was that.

I searched the docs on docs.sun.com and they mention going from zfs to legacy
but the only thing that is says about going back is that zfs will take care of
it.  Which is what it is not doing.

Console logon states no home_dir so using /home.

The only way to get a graphical logon back was to set /export and /export/home
to legacy and then it would mount /export/home/username again.  I looked over
zfs get * rpoo/export and nothing looks exciting.

The current zfs list is:

NAME                                   USED  AVAIL  REFER  MOUNTPOINT
rpool                                 27.9G  9.23G  93.5K  /rpool
rpool/ROOT                            24.6G  9.23G    31K  legacy
rpool/ROOT/Oracle_Solaris_11_Express  24.6G  9.23G  18.5G  /
rpool/ROOT/solaris                      37M  9.23G  3.44G  /
rpool/dump                            1018M  9.23G  1018M  -
rpool/export                           276M  9.23G    32K  legacy
rpool/export/home                      276M  9.23G    32K  legacy
rpool/export/home/alan                 276M  9.23G   276M  /export/home/alan
rpool/swap                            2.04G  9.23G  2.04G  -

Any ideas?

thanks in advance, 
alan
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I tried to recreate this scenario using VirtualBox under Windows XP so I could
capture the actual messages.

Could not duplicate.

Oh well.

alan
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The issue was somehow a file got created in /export and ZFS prefers an empty
mount point.

rm * and the issue was resolved.

alan
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