zfs discuss - Jun 2008 - ''zfs list'' output showing incorrect mountpoint after boot -Z

I installed snv_92 with zfs root. Then took a snapshot of the root and clonned
it. Now I am booting from the clone using the -Z option. The system boots fine
from the clone but ''zfs list'' still shows that the
''/'' is mounted on the original mountpoint instead of the clone
even though the output of ''mount'' shows that
''/'' is mounted on the clone. Here is the output.

# zfs list
NAME                              USED  AVAIL  REFER  MOUNTPOINT
rpool                            22.1G  44.8G    63K  /rpool
rpool/ROOT                       6.11G  44.8G    18K  legacy
rpool/ROOT/snv_92                6.10G  44.8G  6.09G  /
rpool/ROOT/snv_92 at fresh_install  5.55M      -  6.09G  -
rpool/ROOT/snv_92.backup         8.00M  44.8G  6.10G  legacy
rpool/dump                       8.00G  44.8G  8.00G  -
rpool/export                       38K  44.8G    20K  /export
rpool/export/home                  18K  44.8G    18K  /export/home
rpool/swap                       8.00G  52.8G  2.55M  -
# mount
/ on rpool/ROOT/snv_92.backup read/write/setuid/devices/dev=3f50002 on Wed Dec
31 16:00:00 1969

snv_92 at fresh_install is the snapshot of the original installation on snv_92.
snv_92.backup is the clone. You can see that the / is mounted on snv_92.backup
but in zfs list output it still shows that ''/'' is mounted on
snv_92.

Is that a bug or did I misss a step ?

Thanks
Sumit
 
 
This message posted from opensolaris.org

On Jun 26, 2008, at 8:11 PM, Sumit Gupta wrote:
> snv_92 at fresh_install is the snapshot of the original installation on  
> snv_92. snv_92.backup is the clone. You can see that the / is  
> mounted on snv_92.backup but in zfs list output it still shows that  
> ''/'' is mounted on snv_92.
>
It''s showing where it *would* mount, if it were mounted.  It''s
not
mounted, however (type ''zfs mount'' to see a list of currently
mounted
datasets), so everything is OK.

To see if a dataset will be automatically mounted at boot, look at the  
''canmount'' property of the dataset.  Only those datasets with
a
canmount set to ''on'' will be mounted.  If the property is
''off'', then
it will not be mounted.  If it is set to ''noauto'', then it
will only
be mounted if it is the root dataset (or the /var dataset).


Regards,
markm