[Cluster-devel] Kernel panic on mounting gfs2: kernel 2.6.19 and 2.6.20.
Steven Whitehouse
swhiteho at redhat.com
Thu Feb 8 16:26:32 UTC 2007
Hi,
I cannot reproduce what you are seeing, but try the attached patch to
see if we can narrow this down,
Steve.
On Thu, 2007-02-08 at 15:02 +0100, Zbyszek Żółkiewski wrote:
> ok , i have build kernel from your git (
> git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw.git)
> Linux version 2.6.20-xmpp2-ga2cf8222-dirty (root at xmpp-alt2) (gcc
> version 3.4.4 20050314 (prerelease) (Debian 3.4.3-13sarge1)) #1 Thu
> Feb 8 14:51:21 CET 2007
>
> and there is the same problem;
> kernel BUG at fs/gfs2/glock.c:704!
> invalid opcode: 0000 [#2]
> Modules linked in: lock_nolock lock_dlm gfs2 dlm configfs
> CPU: 0
> EIP: 0060:[<f8950173>] Not tainted VLI
> EFLAGS: 00000282 (2.6.20-xmpp2-ga2cf8222-dirty #1)
> EIP is at gfs2_glmutex_unlock+0x18/0x1c [gfs2]
>
> and so one....
>
> ok so waiting patiently for solution....
>
>
>
>
> On 2/8/07, Steven Whitehouse <swhiteho at redhat.com> wrote:
> Hi,
>
> On Thu, 2007-02-08 at 14:04 +0100, Zbyszek Żółkiewski wrote:
> > sorry - mail went only to Steven, now to group....
> >
> >
> > On 2/8/07, Zbyszek Żółkiewski <zbyszek at toliman.pl> wrote:
> > well, thanks for answer, i have tried with nolock,
> and result
> > is as follow:
> > of course i made mkfs -t gfs2 -p lock_nolock -t
> xmpp-alt2:test
> > -j 1 /dev/sdb1 and then:
> > mount -t gfs2 /dev/sdb1 /mnt -v
> >
> > and yes - the device is mounted,
> It looks like what is happening is that a glmutex_unlock() is
> discovering that its spinlock has been dropped by
> glock.c:run_queue()
> which should be impossible, so something odd is happening here
> I think.
>
> The daemons implicated in this are there to demote unused
> locks on a
> periodic basis, so its presumably one of the locks used during
> mounting
> of the filesystem thats at fault.
>
> > (the changes to kernel you was talking about: you
> mean: git1
> > for 2.6.20?)
> >
> I'm not sure if its in git1 or not, I suspect it will be git2
> since it
> was only yesterday that the patches went in. Linus' current
> git tree
> seems to be broken (both gitweb and direct via the git tools)
> otherwise
> I'd post a URL to the changes. In the mean time you can find
> them in my
> -nmw tree which will get updated just as soon as git it
> working again at
> kernel.org,
>
> Steve.
>
>
>
>
> --
> pozdrawiam,
> Zbyszek Żółkiewski
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