[Pkg-samba-maint] Bug#589218: Bug#589218: also hit by this bug

Steve Langasek vorlon at debian.org
Sat Jan 15 19:49:49 UTC 2011

On Wed, Jan 12, 2011 at 09:50:57AM +0100, Santiago Garcia Mantinan wrote:
> I've been also hit by this bug and saw the forwarding that Christian did
> upstream and I'm afraid that if upstream didn't look at our bug they may not
> be getting the spirit of it.

> In fact, upstream bugtrack shows Jeff Layton asking:

> I suppose we could disallow this somehow, but *should* we? Is this
> specifically disallowed?

That's in reference to allowing a share to be mounted multiple times at a
mount point.  I don't think that should be disallowed; it's not disallowed
for other filesystem types either, though you may be unable to double-mount
a given device due to locking issues.

> I don't see a problem in mount.cifs allowing to mount the same share on the
> same mountpoint other than "mount -a" mounting things several times.

> In fact, I used to relly on "mount -a" exit status to know if I have
> everything mounted or not, and with this bug you cannot issue a "mount -a"
> as you'll get all the cifs shares mounted again.

I believe this is only the case when the path written to /etc/mtab differs
from that in /etc/fstab - most commonly because of the extra / that gets
appended to the /etc/mtab entry with recent versions of mount.cifs.  This is
a behavior change that doesn't make much sense (it's inconsistent with NFS
mtab handling, for instance), but I'm not sure we're going to get it
reverted soon enough to make a difference.

Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                    http://www.debian.org/
slangasek at ubuntu.com                                     vorlon at debian.org
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