Hi Wojciech,
upgrading e2fsprog worked fine.
Thank you
Christos
On 04/13/2011 02:29 PM, Wojciech Turek wrote:
Hi Christos,
As far as I remember the mmp implementation in the default Lustre
e2fsprog has a bug where you can not access filesystem in readonly
mode as long as the filesystem is mounted. I downloaded a newer
version of the e2fsprog tools which doesn't have that fault and I have
been successfully using this version for 6 months now.
e2fsprogs-1.41.12.2.ora1-0redhat.x86_64
e2fsprogs-devel-1.41.12.2.ora1-0redhat.x86_64
So if you upgrade your e2fsprogs to newer version you should not have
a problem to run fsck with -n
Other option you have is to temporarily disable the MMP protection but
I am not sure if you can do that while device is mounted.
Best regards,
Wojciech
On 13 April 2011 09:29, Christos Theodosiou <[email protected]
<mailto:[email protected]>> wrote:
Hi all,
I am trying to perform a file-system check on a mounted lustre
file-system.
The e2fsck fails with the following message:
> e2fsck -n -v --mdsdb /tmp/mdsdb /dev/msavg/lv001
e2fsck 1.41.10.sun2 (24-Feb-2010)
device /dev/mapper/msavg-lv001 mounted by lustre per
/proc/fs/lustre/mds/lustrefs-MDT0000/mntdev
Warning! /dev/msavg/lv001 is mounted.
e2fsck: MMP: device currently active while trying to open
/dev/msavg/lv001
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the
superblock
is corrupt, and you might try running e2fsck with an alternate
superblock:
e2fsck -b 32744 <device>
I tried setting -b argument but the message persists.
Do you have any suggestions on how to proceed.
Best regards
Christos
--
Christos Theodosiou
Scientific Computational Center
Aristotle University
54 124 Thessaloniki, Greece
Tel: +30 2310 99 8988
Fax: +30 2310 99 4309
http://www.grid.auth.gr
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--
Wojciech Turek
Senior System Architect
High Performance Computing Service
University of Cambridge
Email: [email protected] <mailto:[email protected]>
Tel: (+)44 1223 763517
--
Christos Theodosiou
Scientific Computational Center
Aristotle University
54 124 Thessaloniki, Greece
Tel: +30 2310 99 8988
Fax: +30 2310 99 4309
http://www.grid.auth.gr
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