ZFS "Dataset is busy" error / Samba + Previous Versions

[Miroslav Lachman]

Richard Mahlerwein wrote:
>> From: Bob Friesenhahn<bfriesen at simple.dallas.tx.us>

[...]

>> This seems to have something to do with how the filesystem is mounted.
>> See
>> http://www.mail-archive.com/zfs-discuss@opensolaris.org/msg00812.html
>> Also see
>> http://defect.opensolaris.org/bz/show_bug.cgi?id=5000
>> So try
>>    zfs unmount tank
>>    zfs mount tank
>> and maybe it will start working as expected.
>>
>> I am finding more Google hits for FreeBSD and OS-X than I am for
>> Solaris so it may be that this issue is somewhat OS specific.
>
> So, a completely unrelated bug with Windows and ACPI took down my machine while the VM was running.  After some tomfoolery to get filesystems cleaned back up again, I tried what you suggested...
>
>    curie# zfs unmount tank
>    curie# zfs mount tank
>    curie# zfs snapshot tank at snap1
>    curie#
>
> Poof!  Success!  At least at making snapshots.  Of course, I don't yet see a "Previous Versions" tab in the properties of anything yet (which I do see on some other shares from other servers).  But at least now I can fool with those a bit.

Do you see Previous Versions on Samaba shares from FreeBSD? I think you 
need some tweaks in smb.conf:

http://www.edplese.com/samba-with-zfs.html

http://www.edplese.com/blog/2009/12/02/samba-shadow_copy2-enhancements/

http://www.samba.org/samba/docs/man/Samba-HOWTO-Collection/VFS.html#id2651813

Miroslav Lachman