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Re: Unable to get XFS, ext3, reiserfs & LVM to coexist happily

To: Linux XFS Mailing List <linux-xfs@xxxxxxxxxxx>
Subject: Re: Unable to get XFS, ext3, reiserfs & LVM to coexist happily
From: Adrian Head <ahead@xxxxxxxxxxxxxx>
Date: Wed, 2 Jan 2002 14:13:01 +1000
In-reply-to: <200201020451.g024pPg00867@oss.sgi.com>
References: <200201020451.g024pPg00867@oss.sgi.com>
Sender: owner-linux-xfs@xxxxxxxxxxx
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As I cross posted this I didn't make a big deal out of it but I find it 
interesting that sometimes (I haven't spent the time to nail this down 
properly yet) when mounting an xfs snapshot like so:
mount /dev/HDA/SNAP /mnt/snapshot
it thinks that the snapshot is a resierfs snapshot and sill go to great 
lengths to do so (takes up to and over a minute to mount it).  Everything 
seems fine at the end of the day ie. I can see files in the snapshot but I 
find it interesting that either:
1)      There is a problem and the kernel is mistaking an XFS snapshot as a 
resierfs snapshot, or
2)      There is a problem and the kernel is just misreporting the filesystem 
on 
the snapshot.

Of course this is easily to get around just use:
mount -t xfs /dev/HDA/SNAP /mnt/snapshot

I'm intreged now.

On Wed, 2 Jan 2002 13:51, Adrian Head wrote:
> Hope everyone had a happy new year  :-)
>
> I'm starting to play around with LVM with the goal of having XFS, ext3,
> reiserfs and LVM coexist nicely together.
>
> Has anyone been able to get , ext3, reiserfs, XFS and LVM running nicely
> together?
 [....]
> * Can create xfs snapshot?                    | yes
> * Can mount a xfs snapshot?                   | yes
> NOTE: For some reason kernel thinks xfs is resierfs when mounted without -t
> xfs!
> When source & snapshot mounted:
> * Cause oops when snapshot overflows? |
>  - ext3                                               | Cannot test
>  - resierfs                                   | OK - Stable
>  - xfs                                                | Oops

- -- 
Adrian Head

(Public Key available on request.)

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