[Linux-cluster] CLVMD hangs

[Daniela Anzellotti]

Hi all,

same problem for me: today after a reboot of a cluster node, clvmd could 
not start properly anymore since pvscan hangs.

If I try to start vgscan on the other node it hangs too!! If I 'strace' 
on pvscan I can see it stops while reading...

It's a cluster of two nodes, with quorum disk (two_node="0"), offering 
several VMs installed on raw partitions in a CLVM environment.

It's running version 5.4, x86_64 , with the following packages:

cman-2.0.115-1.el5_4.3
rgmanager-2.0.52-1.el5_4.2
lvm2-2.02.46-8.el5_4.2
lvm2-cluster-2.02.46-8.el5_4.1

kernel-xen-2.6.18-164.2.1.el5
kernel-xen-devel-2.6.18-164.2.1.el5
xen-3.0.3-94.el5_4.2
xen-libs-3.0.3-94.el5_4.2


Any suggestion on what can I check/change/install? I don't have any idea 
on what happened...

Thanks,
Daniela



Christine Caulfield wrote:
> On 15/01/10 07:25, cluster at xinet.it wrote:
>> Hi all,
>>
>> i use redhat cluster my os version is 5.4. I have a three-node cluster
>> and clustered VG (XenVG) with many LV (one for each VM). After a cluster
>> reboot I’m not able to restart clvmd anymore due to vgscan hangs.
>>
>> Is there a way to convert the clustered VG to a non-clustered one? I
>> tried changing the locking_typ parameter from 3 to 1 but it wasn’t the
>> right solution.
> 
> You can remove the cluster flag from a VG with the following command
> 
> vgchange -cn <vg> --config 'global {locking_type = 0}'
> 
> 
> If you're amenable it would be helpful to try and debug this. Can you add
> 
> CLVMDOPTS="-d2"
> 
> to the file /etc/sysconfig/cluster
> 
> 
> and post the clvmd parts of system to me please.
> 
> Thanks
> 
> Chrissie
> 
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> 

-- 
- Daniela Anzellotti ------------------------------------
  INFN Roma - tel.: +39.06.49914282 - fax: +39.06.490354
  e-mail: daniela.anzellotti at roma1.infn.it
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