From: Andreas Dilger <adilger@turbolabs.com>
To: Adrian Head <ahead@bigpond.net.au>
Cc: Steve Lord <lord@sgi.com>, Linux XFS <linux-xfs@oss.sgi.com>,
linux-lvm@sistina.com
Subject: [linux-lvm] Re: Unable to get XFS, ext3, reiserfs & LVM to coexist happily
Date: Thu Jan 3 18:36:01 2002 [thread overview]
Message-ID: <20020103173819.J12868@lynx.no> (raw)
In-Reply-To: <200201040015.RAA00441@cthulhu.turbolabs.com>; from ahead@bigpond.net.au on Fri, Jan 04, 2002 at 10:15:34AM +1000
On Jan 04, 2002 10:15 +1000, Adrian Head wrote:
> Note: becareful when mounting an XFS snaphot without using "mount -t xfs"
> otherwise i have found it will mount the snapshot as resierfs.
> See http://marc.theaimsgroup.com/?l=linux-xfs&m=100994490716530&w=2 for more
> info on this.
This is because the reiserfs superblock is 64kB into the filesystem, and it
appears that the mkfs.xfs does not overwrite this part of the disk. I have
heard of another person with this same problem. It would probably behoove
the XFS folks to zero the first and last 128kB of a partition when doing
mkfs.xfs to avoid this sort of problem.
For mkfs.ext2, it will zero the first 4kB, overwrite the next tens of kB,
and also zero the last 128kB. I should probably make sure that it will
_always_ overwrite at least the first 68kB, but with the default parameters
it will at least do so except on the smallest of filesystems (i.e. floppies).
Cheers, Andreas
--
Andreas Dilger
http://sourceforge.net/projects/ext2resize/
http://www-mddsp.enel.ucalgary.ca/People/adilger/
next parent reply other threads:[~2002-01-03 18:36 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200201040015.RAA00441@cthulhu.turbolabs.com>
2002-01-03 18:36 ` Andreas Dilger [this message]
[not found] <200201020451.g024pPg00867@oss.sgi.com>
2002-01-04 13:49 ` [linux-lvm] Re: Unable to get XFS, ext3, reiserfs & LVM to coexist happily Eric Sandeen
2002-01-04 16:47 ` Adrian Head
2002-01-04 17:37 ` Andreas Dilger
2002-01-04 20:10 ` Adrian Head
2002-01-04 21:35 ` Adrian Head
[not found] ` <200201050212.TAA16774@cthulhu.turbolabs.com>
2002-01-05 15:29 ` Andreas Dilger
2002-01-10 9:22 ` Adrian Head
2002-01-10 9:28 ` Patrick Caulfield
2002-01-10 15:21 ` Adrian Head
2002-01-11 2:40 ` Luca Berra
[not found] ` <200201101521.IAA17651@cthulhu.turbolabs.com>
2002-01-10 14:14 ` Andreas Dilger
2002-01-10 15:02 ` Adrian Head
[not found] ` <200201042349.g04Nnag26320@oss.sgi.com>
2002-01-04 17:12 ` Eric Sandeen
2002-01-04 20:44 ` Adrian Head
2002-01-05 17:06 ` Andreas Dilger
[not found] ` <200201050346.g053kmg29738@oss.sgi.com>
2002-01-04 21:08 ` Eric Sandeen
2002-01-07 8:05 ` Adrian Head
2002-01-07 12:58 ` Eric Sandeen
2002-01-06 0:20 ` Adrian Head
2002-01-09 16:25 ` Eric Sandeen
2002-01-09 16:40 ` Eric Sandeen
[not found] <200201071648.IAA08511@sgi.com>
2002-01-07 14:34 ` Keith Owens
[not found] <200201071508.g07F8Pg14938@oss.sgi.com>
2002-01-07 8:39 ` Keith Owens
2002-01-07 10:48 ` Adrian Head
[not found] <6u4rm4r53e.fsf@zork.zork.net>
[not found] ` <200201031638.g03GcJg20734@oss.sgi.com>
[not found] ` <1010072497.12080.42.camel@jen.americas.sgi.com>
2002-01-03 18:13 ` Adrian Head
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