zfs hang with umount

[Uroš Gruber]

Hi Andriy,

can you tell me more about this or what was the cause for this so I
can avoid it until 9.2 is released. I don't want to jump on 9-STABLE
and maybe have more problems with some other stuff.

regards

Uros

On 11 March 2013 22:22, Andriy Gapon <avg at freebsd.org> wrote:
> on 11/03/2013 20:20 Uroš Gruber said the following:
>> Hi,
>>
>> I don't know what causes this, but while stopping one of jails I also
>> run zfs inherit mountpoint on this jails fs. This jail was in stopping
>> state at this moment. Process than hanged in D state. Then I was doing
>> some stuff on the server, and while "zfs unmount -f" of that fs,
>> server chrased. Now everytime I wan't to unmount that fs process hang.
>> I've managed to send & receive this fs to other fs and mounted
>> sucessfuly.
>>
>> Before I reboot and try to destroy this fs, here is output of procstat
>> -k PID (zfs umount zroot/myfs)
>>
>>   PID    TID COMM             TDNAME           KSTACK
>>  3937 100559 zfs              -                mi_switch
>> sleepq_timedwait _sleep zfs_zget zfs_get_data zil_commit
>> zfs_freebsd_write VOP_WRITE_APV vnode_pager_generic_putpages
>> vnode_pager_putpages vm_pageout_flush vm_object_page_collect_flush
>> vm_object_page_clean vm_object_terminate vnode_destroy_vobject
>> zfs_freebsd_reclaim vgonel vflush
>>
>> Is there anything I can check or is this know bug?
>>
>> Server is running on 9.1-RELEASE
>
> This should be fixed in stable/9.
>
> --
> Andriy Gapon