Jails on ZFS

[Alexander Petrovsky]

>
> Hi,
>
> I'm playing with jails on ZFS and everything is fine, except annoying
> warnings (hopefully just warnings) when doing:
>    # /etc/rc.d/jail stop
>
> zfs_umount:971[0]: Force unmount is experimental - report any problems.
> ...
> zfs_umount:971[0]: Force unmount is experimental - report any problems.
>
>
> I found that in rc.d/jail secure_umount() it always do "umount -f "
>
> Maybe it's better first try to unmount without -f and then use force?
>
>
> --- /etc/rc.d/jail      2009-07-22 23:29:29.000000000 +0300
> +++ /etc/rc.d/jail      2009-07-28 14:00:19.998368729 +0300
> @@ -270,7 +270,7 @@
>        _dir=$1
>
>        if is_current_mountpoint ${_dir}; then
> -               umount -f ${_dir} >/dev/null 2>&1
> +               umount ${_dir} >/dev/null 2>&1 || { sleep 2; umount ${_dir}
> >/dev/null 2>&1 || umount -f ${_dir} >/dev/null 2>&1; }
>        else
>                debug "Nothing mounted on ${_dir} - not unmounting"
>        fi
>

Hi, it is may be good idea. But, I can't understand your code, why you do -
 umount ${_dir} >/dev/null 2>&1 || { sleep 2; umount ${_dir} >/dev/null 2>&1
|| umount -f ${_dir} >/dev/null 2>&1; }

instead
 umount ${_dir} >/dev/null 2>&1 || umount -f ${_dir} >/dev/null 2>&1

?



-- 
С уважением Петровский Александр,
With the best regards Alexander Petrovsky,

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