Thanks Bernd. >From the bug reports it looks like the OST is actually still mounted by lustre, unbeknownst to Linux and VFS. Is there a mechanism to unmount it or do I need to reboot?
Erik On Fri, Jan 15, 2010 at 3:28 PM, Bernd Schubert <[email protected]>wrote: > On Friday 15 January 2010, Erik Froese wrote: > > We had an OSS lockup and had to be reset. Heartbeat failed to mount one > of > > the OSTs and unmounted all of its local OSTs. > > > > I'm trying to run mount on one of the OSTs (ost08) but it claims its > > mounted when it is not. > > > > I have other OSTs mounted so I can't remove the driver right now. Any > > ideas? > > > > Redhat 5.3 > > > > [r...@oss-0-0 ~]# uname -a > > Linux oss-0-0.local 2.6.18-128.7.1.el5_lustre.1.8.1.1 #1 SMP Tue Oct 6 > > 05:48:57 MDT 2009 x86_64 x86_64 x86_64 GNU/Linux > > > > [r...@oss-0-0 ~]# mount | grep ost > > /dev/dsk/ost12 on /mnt/scratch/ost12 type lustre (rw) > > /dev/dsk/ost16 on /mnt/scratch/ost16 type lustre (rw) > > /dev/dsk/ost20 on /mnt/scratch/ost20 type lustre (rw) > > /dev/dsk/ost00 on /mnt/scratch/ost00 type lustre (rw) > > /dev/dsk/ost04 on /mnt/scratch/ost04 type lustre (rw) > > /dev/dsk/ost110 on /mnt/scratch/ost110 type lustre (rw) > > > > [r...@oss-0-0 ~]# umount -f /mnt/scratch/ost08 > > umount2: Invalid argument > > umount: /mnt/scratch/ost08: not mounted > > > > [r...@oss-0-0 ~]# e2fsck -n /dev/dsk/ost08 | tee > > /state/partition1/e2fsck-n.ost08_`date '+%m.%d.%y-%H:%M:%S'`.log > > e2fsck 1.41.6.sun1 (30-May-2009) > > device /dev/sdj mounted by lustre per > > /proc/fs/lustre/obdfilter/scratch-OST0018/mntdev > > Warning! /dev/dsk/ost08 is mounted. > > Warning: skipping journal recovery because doing a read-only filesystem > > check. > > see here: > > https://bugzilla.lustre.org/show_bug.cgi?id=19566 > https://bugzilla.lustre.org/show_bug.cgi?id=21359 > > -- > Bernd Schubert > DataDirect Networks >
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