[Linux-cluster] Unable to obtain lock

[Marc Grimme]

On Friday 26 January 2007 19:15, Lon Hohberger wrote:
> On Fri, 2007-01-26 at 09:19 +0100, Marc Grimme wrote:
> > Hello,
> > yesterday we saw a clusterfreeze (which seems to come from the rgmanager)
> > with RHEL4/U4 GFS installed (see logs) consisting of 6 nodes x86_64
> > Architecture. After fencing one node the cluster came back to live.
> > Any idea what could have happend?
>
> Check 'dmesg' and 'cman_tool status'.  Also look at /proc/slabinfo,
> specifically 'dlm_lkb' bits.  There's a chance that you hit a bug that's
> already fixed. :)
cman_tool status:
root at lilr623e:~# cman_tool status
Protocol version: 5.0.1
Config version: 12
Cluster name: lilr623
Cluster ID: 13279
Cluster Member: Yes
Membership state: Cluster-Member
Nodes: 6
Expected_votes: 2
Total_votes: 6
Quorum: 4
Active subsystems: 62
Node name: lilr623e-ics0
Node ID: 5
Node addresses: 192.168.10.149
root at lilr623e:~# cat /proc/slabinfo | grep dlm_lkb
dlm_lkb           189628 195177    232   17    1 : tunables  120   60    8 : 
slabdata  11481  11481    384
nodea
dlm_lkb           2074114 2077587    232   17    1 : tunables  120   60    8 : 
slabdata 122211 122211    180
nodeb
dlm_lkb           454319 499392    232   17    1 : tunables  120   60    8 : 
slabdata  29376  29376      0
nodec
dlm_lkb           242144 251719    232   17    1 : tunables  120   60    8 : 
slabdata  14807  14807    480
noded
dlm_lkb           248672 286382    232   17    1 : tunables  120   60    8 : 
slabdata  16846  16846    212
nodef
dlm_lkb            62934  62934    232   17    1 : tunables  120   60    8 : 
slabdata   3702   3702      0

>
> > And why didn't the cluster "heal" itself?
>
> Need above information (and possibly more) to answer this.
What more?? ;-)
>
> -- Lon
>
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