Exporting ZFS Pool

Pete Erickson redlamb at redlamb.net
Wed Sep 8 18:32:03 UTC 2010

** Dan Nelson <dnelson at allantgroup.com> [2010-09-08 11:49:08 -0500] **
> In the last episode (Sep 08), Pete Erickson said:
> > On Wed Sep  8 01:20:07 2010, CyberLeo Kitsana <cyberleo at cyberleo.net> wrote:
> > > On 09/07/2010 09:25 PM, Pete Erickson wrote:
> > >> I'm relatively new to ZFS and have been playing around with different
> > >> file-backed set ups to determine how I will eventually configure my
> > >> pools. I've recently come across a problem with exporting a pool, but
> > >> I'm not sure if it's a bug or just my poor understanding of ZFS. I
> > >> create a simple pool using 2 128MB files. After exporting the pool, I am
> > >> unable to import it and the pool is not found by the zpool command. Any
> > >> advise would be appreciated. I'm currently running 8.1 STABLE.
> > >
> > > Curious, neither can I (8.1-RELEASE):
> > >
> > > (f84104b2)[cyberleo at akisha /tmp/zp]$ truncate -s 256m d1 d2
> > > (f84104b2)[cyberleo at akisha /tmp/zp]$ sudo zpool create pool /tmp/zp/d1 /tmp/zp/d2
> Try using mdconfig to attach these files as disk devices.  "mdconfig -a -t
> vnode -f /tmp/zp/d1" and "-f /tmp/zp/d2" (you'll get two md# devices), then
> see if the zpool import command is any happier.  It may be looking for disk
> devices and not files.

This seemed to work. I was able to export the pool and reimport it
without a problem. I'll use this for testing, however, correct me if I'm
wrong, but this should still work without attaching it as a disk device,

Prior to testing this, I tried using the the files again without
mounting and I received the error stating that it was missing one of the
files. It clearly identified disk1.dd as present, but was unable to find

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