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* [Cluster-devel] fatal: assertion "!atomic_read(&gl->gl_ail_count)" failed
@ 2007-02-26 15:43 David Craigon
  2007-02-26 20:55 ` Josef Whiter
  0 siblings, 1 reply; 4+ messages in thread
From: David Craigon @ 2007-02-26 15:43 UTC (permalink / raw)
  To: cluster-devel.redhat.com

This happens when I create a file on one computer, then quickly delete
it on the other.

It doesn't happen if 1) I wait a long period of time between creating
the file and deleting it 2) if I delete the file on the same computer as
I made it, no matter how fast I do it. I seem to be able to create files
on both computers as much as I like.

David


> -----Original Message-----
> From: Josef Whiter [mailto:jwhiter at redhat.com] 
> Sent: 23 February 2007 17:59
> To: David Craigon
> Cc: cluster-devel at redhat.com
> Subject: Re: [Cluster-devel] fatal: assertion 
> "!atomic_read(&gl->gl_ail_count)" failed
> 
> On Fri, Feb 23, 2007 at 04:17:57PM -0000, David Craigon wrote:
> > Hello,
> > 
> > I'm trying to use GFS2. I'm trying to use all latest parts- so I've 
> > tried it using Fedora 7 test1 with a check out from CVS, 
> and I've also 
> > tried Fedora 6. I have an equal lack of success with both.
> > 
> > My set up is that I am trying to set up a simple cluster 
> featuring two 
> > servers attached using open-iSCSI to a backend SAN. The iSCSI part 
> > works
> > fine- I have the drive as a device on both computers. I'm using the 
> > iSCSI that comes with the linux distro. I've turned off 
> SELinux. I'm 
> > using DLM locking
> > 
> > When I've got both servers attached to it works for a short while 
> > (circa 10 seconds or so).
> > What I typically do is create files and then delete them 
> from the two 
> > servers. After a while I get this....
> > 
> > Feb 23 15:54:28 a kernel: GFS2: fsid=: Trying to join cluster 
> > "lock_dlm", "alpha_cluster:a"
> > Feb 23 15:54:28 a kernel: GFS2: fsid=alpha_cluster:a.0: 
> Joined cluster.
> > Now mounting FS...
> > Feb 23 15:54:28 a kernel: GFS2: fsid=alpha_cluster:a.0: 
> jid=0, already 
> > locked for use Feb 23 15:54:28 a kernel: GFS2: 
> fsid=alpha_cluster:a.0: 
> > jid=0: Looking at journal...
> > Feb 23 15:54:28 a kernel: GFS2: fsid=alpha_cluster:a.0: jid=0: Done 
> > Feb 23 15:54:55 a kernel: GFS2: fsid=alpha_cluster:a.0: fatal: 
> > assertion "!atomic_read(&gl->gl_ail_count)" failed
> > Feb 23 15:54:55 a kernel: GFS2: fsid=alpha_cluster:a.0:   function =
> > gfs2_meta_inval, file = fs/gfs2/meta_io.c, line = 101 Feb 
> 23 15:54:55 
> > a kernel: GFS2: fsid=alpha_cluster:a.0: about to withdraw this file 
> > system Feb 23 15:54:55 a kernel: GFS2: 
> fsid=alpha_cluster:a.0: telling 
> > LM to withdraw
> > 
> > At that point, this server can't look at the mount point anymore.
> > 
> > Can anyone offer any assistance?
> >  
> 
> I hit this same bug as well, but haven't gone back to try and 
> reproduce it yet.
> Could you possibly try to narrow down an exact (or heck even 
> general) sequence of commands that will trigger the problem?  
> If not open a bugzilla and CC me to it and I'll try to get 
> some time next week to reproduce it again.  Thanks,
> 
> Josef
> 



^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Cluster-devel] fatal: assertion "!atomic_read(&gl->gl_ail_count)" failed
@ 2007-02-23 16:17 David Craigon
  2007-02-23 17:58 ` Josef Whiter
  0 siblings, 1 reply; 4+ messages in thread
From: David Craigon @ 2007-02-23 16:17 UTC (permalink / raw)
  To: cluster-devel.redhat.com

Hello,

I'm trying to use GFS2. I'm trying to use all latest parts- so I've
tried it using Fedora 7 test1 with a check out from CVS, and I've also
tried Fedora 6. I have an equal lack of success with both.

My set up is that I am trying to set up a simple cluster featuring two
servers attached using open-iSCSI to a backend SAN. The iSCSI part works
fine- I have the drive as a device on both computers. I'm using the
iSCSI that comes with the linux distro. I've turned off SELinux. I'm
using DLM locking 

When I've got both servers attached to it works for a short while (circa
10 seconds or so). 
What I typically do is create files and then delete them from the two
servers. After a while I get this....

Feb 23 15:54:28 a kernel: GFS2: fsid=: Trying to join cluster
"lock_dlm", "alpha_cluster:a"
Feb 23 15:54:28 a kernel: GFS2: fsid=alpha_cluster:a.0: Joined cluster.
Now mounting FS...
Feb 23 15:54:28 a kernel: GFS2: fsid=alpha_cluster:a.0: jid=0, already
locked for use
Feb 23 15:54:28 a kernel: GFS2: fsid=alpha_cluster:a.0: jid=0: Looking
at journal...
Feb 23 15:54:28 a kernel: GFS2: fsid=alpha_cluster:a.0: jid=0: Done
Feb 23 15:54:55 a kernel: GFS2: fsid=alpha_cluster:a.0: fatal: assertion
"!atomic_read(&gl->gl_ail_count)" failed
Feb 23 15:54:55 a kernel: GFS2: fsid=alpha_cluster:a.0:   function =
gfs2_meta_inval, file = fs/gfs2/meta_io.c, line = 101
Feb 23 15:54:55 a kernel: GFS2: fsid=alpha_cluster:a.0: about to
withdraw this file system
Feb 23 15:54:55 a kernel: GFS2: fsid=alpha_cluster:a.0: telling LM to
withdraw

At that point, this server can't look at the mount point anymore.

Can anyone offer any assistance?
 
David

Griffin Information Systems Ltd
20 St Christopher's Way,
Pride Park,
Derby
DE24 8JY 
www.griffin.com <http://www.griffin.com/>  

Registered in England and Wales. Company Registration Number: 3676297. 

 



^ permalink raw reply	[flat|nested] 4+ messages in thread
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2007-02-26 15:43 [Cluster-devel] fatal: assertion "!atomic_read(&gl->gl_ail_count)" failed David Craigon
2007-02-26 20:55 ` Josef Whiter
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2007-02-23 16:17 David Craigon
2007-02-23 17:58 ` Josef Whiter

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