[Linux-cluster] Fwd: GFS volume hangs on 3 nodes after gfs_grow

Alan A alan.zg at gmail.com
Fri Sep 26 20:08:48 UTC 2008

  gfs_sda1     1   1   0 wz--n- 10.00G 5.00G
  gfs_sdb1     1   1   0 wz--n- 10.00G 3.50G

The vg's are not enabled with the cluster bit. I am sorry for not being more
informative on LVM. If I enable cluster bit with vgchange -c command would
that convert the volumes to cluster volume group, or should I start by
blowing them away?

On Fri, Sep 26, 2008 at 2:51 PM, Bob Peterson <rpeterso at redhat.com> wrote:

> ----- "Alan A" <alan.zg at gmail.com> wrote:
> | I have been able to recreate the problem with gfs_grow. Here is the
> | output
> | of the test command, and the actual command, with the
> | /var/log/messages -
> | all from the node3. I am opening ticket with RH, and will give you
> | the
> | ticket number afterwards.
> |
> |
> | [root at dev03 /]# gfs_grow -v -T /lvm_test2
> Hi Alan,
> This is helpful, thanks.  Please check that the clustered
> bit is "on" for your volume group.  If you do the "vgs"
> command, it should show "wz--nc" under "Attr" for the volume
> group.  If not, (if it shows "wz--n-") it would explain your
> problem, because it needs to be on.  So please, double-check
> for me.  If the clustered bit is not on, the other nodes are not
> informed by lvm of the resize that took place, so when gfs_grow
> informs them of the file system size change, things don't go
> well.  :7)
> If the volume group is indeed clustered, it would help me a lot
> to get a complete history of these commands pertaining to your GFS
> volume:
> lvcreate
> lvresize or lvextend
> mount
> umount
> gfs_mkfs or mkfs.gfs
> gfs_fsck
> gfs_grow
> You might be able to grep these from the "history" command.
> I just now created a logical volume of a similar size, and I was
> able to do a gfs_grow on it without any problems, hangs or
> consequences.  I must be doing something different, so I want
> to make sure I hit the same conditions you hit by using the
> exact same commands, if possible.  Otherwise, I'll have to
> try a bunch of combinations and it may take be days to hit
> the right combination.
> Also, let me know what kind of activity was happening on the
> other nodes while you were doing gfs_grow.  Not detailed; I
> just want to know if the other nodes were likely to have been
> writing to the file system.
> Regards,
> Bob Peterson
> Red Hat Clustering & GFS
> --
> Linux-cluster mailing list
> Linux-cluster at redhat.com
> https://www.redhat.com/mailman/listinfo/linux-cluster

Alan A.
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