[linux-lvm] [Q]XFS + LVM Snapshot?

[Sean Oh]

Sorry, but where can I find that patch?

Thanks again for your reply.

----- Original Message ----- 
From: "Andreas Dilger" <adilger at turbolabs.com>
To: "Sean Oh" <oh at linuxsecurity.co.kr>
Cc: <linux-lvm at sistina.com>
Sent: Sunday, November 18, 2001 7:22 AM
Subject: Re: [linux-lvm] [Q]XFS + LVM Snapshot?


> On Nov 18, 2001  02:59 +0900, Sean Oh wrote:
> > Kernel: 2.4.15-pre4 with XFS patch ( linux-2.4-xfs CVS tree from SGI site)
> > LVM: current - LVM CVS
> > 
> > Patches applied: linux-2.4.11-VFS-lock.patch from LVM CVS
> > 
> > *I can not mount the original FS and snapshot FS at the same time. If
> > I unmount the origianal XFS FS and then mount the snapshot FS, it works,
> > tough.
> 
> Yes, you need an XFS patch which does something with the filesystem UUID
> in the snapshot.  XFS has a feature which prevents the same filesystem
> from being mounted more than once.
> 
> What they do to fix this is to create writable snapshots.  What I would
> rather they do is in the "duplicate UUID detection" code, allow mounting
> of devices which are on read-only media (e.g. a snapshot).
> 
> Cheers, Andreas
> --
> Andreas Dilger
> http://sourceforge.net/projects/ext2resize/
> http://www-mddsp.enel.ucalgary.ca/People/adilger/
> 
> 
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