zfs discuss - Sep 2007 - import zpool error if use loop device as vdev

By default, ''zpool import'' looks only in /dev/dsk. Since you
are using
/dev/lofi you will need to use ''zpool import -d /dev/lofi'' to
import
your pool.

Thanks,
George

sunnie wrote:
> Hey, guys
>       I just do the test for use loop device as vdev for zpool
> Procedures as followings:
> 1)  mkfile -v 100m disk1
>      mkfile -v 100m disk2
> 
> 2)  lofiadm -a disk1 /dev/lofi
>      lofiadm -a disk2 /dev/lofi
> 
> 3)  zpool create pool_1and2  /dev/lofi/1 and /dev/lofi/2
> 
> 4)  zpool export pool_1and2
> 
> 5) zpool  import pool_1and2
> 
> error info here:
> bash-3.00# zpool import pool1_1and2
> cannot import ''pool1_1and2'': no such pool available
> 
> So, can anyone help explain some details that differ from loop devices and
physical  block device?
>  
>  
> This message posted from opensolaris.org
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Hey, guys
      I just do the test for use loop device as vdev for zpool
Procedures as followings:
1)  mkfile -v 100m disk1
     mkfile -v 100m disk2

2)  lofiadm -a disk1 /dev/lofi
     lofiadm -a disk2 /dev/lofi

3)  zpool create pool_1and2  /dev/lofi/1 and /dev/lofi/2

4)  zpool export pool_1and2

5) zpool  import pool_1and2

error info here:
bash-3.00# zpool import pool1_1and2
cannot import ''pool1_1and2'': no such pool available

So, can anyone help explain some details that differ from loop devices and
physical  block device?
 
 
This message posted from opensolaris.org

Also, there is no need to go through lofi.  You can directly add files
to a zpool:

    # mkfile -v 100m /var/tmp/disk1
    # mkfile -v 100m /var/tmp/disk2
    # zpool create pool_1and2 /var/tmp/disk1 /var/tmp/disk2

I do this in demos all the time, and it''s quite handy.  And as George
pointed out, you just need to feed "zpool import" the directory name
to
have it search for vdevs.


--Bill

On Wed, Sep 19, 2007 at 02:53:47AM -0400, George Wilson
wrote:
> By default, ''zpool import'' looks only in /dev/dsk. Since
you are using
> /dev/lofi you will need to use ''zpool import -d
/dev/lofi'' to import
> your pool.
> 
> Thanks,
> George
> 
> sunnie wrote:
> > Hey, guys
> >       I just do the test for use loop device as vdev for zpool
> > Procedures as followings:
> > 1)  mkfile -v 100m disk1
> >      mkfile -v 100m disk2
> > 
> > 2)  lofiadm -a disk1 /dev/lofi
> >      lofiadm -a disk2 /dev/lofi
> > 
> > 3)  zpool create pool_1and2  /dev/lofi/1 and /dev/lofi/2
> > 
> > 4)  zpool export pool_1and2
> > 
> > 5) zpool  import pool_1and2
> > 
> > error info here:
> > bash-3.00# zpool import pool1_1and2
> > cannot import ''pool1_1and2'': no such pool available
> > 
> > So, can anyone help explain some details that differ from loop devices
and physical  block device?
> >  
> >  
> > This message posted from opensolaris.org
> > _______________________________________________
> > zfs-discuss mailing list
> > zfs-discuss at opensolaris.org
> > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss