[linux-lvm] CLVM and LV activation

[linux-lvm] CLVM and LV activation

[Michael Smith]

Hi,

When a CLVM cluster comes up, the LVs in the clustered volume groups are 
"not available". I can use the heartbeat LVM resource to trigger a 
"vgchange -aly", but I'm wondering if there's a way to configure it to 
happen automatically. It'd make my cluster config simpler.

I'm not positive, but I guess the volume_list directive in lvm.conf 
might be able to do it. Is there a way to tell it to activate all LVs on 
all VGs, or do I have to list the VGs by name?

Thanks,
Mike

Re: [linux-lvm] CLVM and LV activation

[aneesh vs]

[-- Attachment #1: Type: text/plain, Size: 1248 bytes --]

If you are using clvm, you shouldn't wory about volume_list because clvm
allows nodes to activate LVs in all nodes.
Please check what is "locking_type" in lvm.conf . It should be 3 in RHEL5 so
that when clvm starts it can enable all clustered VGs.
If the issue still persists, please chkconfig all cluster services off and
reboot nodes. Once nodes are up start the cluster services in order. Please
note that cluster should be quorate for clvm to start fine.

On Fri, Aug 27, 2010 at 11:36 PM, Michael Smith <msmith@cbnco.com> wrote:

> Hi,
>
> When a CLVM cluster comes up, the LVs in the clustered volume groups are
> "not available". I can use the heartbeat LVM resource to trigger a "vgchange
> -aly", but I'm wondering if there's a way to configure it to happen
> automatically. It'd make my cluster config simpler.
>
> I'm not positive, but I guess the volume_list directive in lvm.conf might
> be able to do it. Is there a way to tell it to activate all LVs on all VGs,
> or do I have to list the VGs by name?
>
> Thanks,
> Mike
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>

[-- Attachment #2: Type: text/html, Size: 1791 bytes --]

Re: [linux-lvm] CLVM and LV activation

[Michael Smith]

aneesh vs wrote:
 > On Fri, Aug 27, 2010 at 11:36 PM, Michael Smith <msmith@cbnco.com
>> When a CLVM cluster comes up, the LVs in the clustered volume
>> groups are "not available". I can use the heartbeat LVM resource to
>> trigger a "vgchange -aly", but I'm wondering if there's a way to
>> configure it to happen automatically. It'd make my cluster config
>> simpler.

> If you are using clvm, you shouldn't wory about volume_list because clvm 
> allows nodes to activate LVs in all nodes.
> Please check what is "locking_type" in lvm.conf . It should be 3 in 
> RHEL5 so that when clvm starts it can enable all clustered VGs.

I'm using SLES11 SP1, but yes, locking_type is 3. There is no problem 
with clvm as far as I can tell - it just doesn't automatically mark the 
LVs as available. I have to run vgchange -ay to make them available. 
After that, they work.

> Please note that cluster should be quorate for clvm to start fine.

Some of my clusters are two-node so quorum isn't possible. clvm is 
running with "-q 0", so I don't think it cares. (That's the default used 
by the clvm RA.)

Thanks,
Mike