[PC-BSD Dev] ZFS 'Device Busy' error

Kris Moore kris at pcbsd.org
Mon Jul 8 07:15:40 PDT 2013

On 07/07/2013 22:46, Claudio L. wrote:
> Hello,
> While working on the disk manager, I found a strange behavior:
> If I create a pool, I can destroy it, export it, etc. and the command
> 'zpool' will unmount the filesystems as needed.
> But if I create a pool, then reboot, zpool can no longer unmount it
> (giving 'Device Busy' error). Also ZFS and 'umount' can't unmount the
> devices unless they are forced with -f.
> Any ideas which process might be keeping these resources open?
> I need to resolve this for the GUI frontend to work properly.
> Thanks,
> Claudio

Interesting, are they mounted someplace where other processes may be
accessing them? Maybe kill the mount-tray application as well, in case
its trying to parse something.

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Kris Moore
PC-BSD Software

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