[linux-lvm] lvm and duplicates...

[linux-lvm] lvm and duplicates...

[C'est Pierre]

Greetings,

I'm trying to setup a cluster with ServiceGuard but I am going through
a lot of hassles doing so. I did a mistake initially by trying to
pvcreate the 2 luns of the same physical disk from our storage (fiber
channel) and now, while trying to create a new logical volume, I get
this weird error, for the record the sda and sdb are the 2 luns coming
from different paths (cards):

# lvcreate -L1 -n quorum clusterfs
  Found duplicate PV TJs3i47MkmyqU4KFCzdmp8N78w4C76mB: using /dev/sdb1
not /dev/sda1
  Rounding up size to full physical extent 4.00 MB
  Failed to activate new LV.

Even if I lvchange -a y clusterfs, it does seem to work (although the
"Found duplicate" message always shows up), but it doesn't, in fact,
solve the problerm when I try to lvcreate again, the same errors as
the one above, show up.

Any hints on how to fix this? I've already done pvremove /dev/sdb1 and
a pvinit /dev/sda1 again and tried to create the clusterfs again, as
when I do the pvremove -ff /dev/sdb1, the vg clusterfs disappears!

Please, help me out :)
Thank you!

Re: [linux-lvm] lvm and duplicates...

[Luca Berra]

On Wed, Jun 07, 2006 at 06:38:49PM +0100, C'est Pierre wrote:
>Greetings,
>
>I'm trying to setup a cluster with ServiceGuard but I am going through
>a lot of hassles doing so. I did a mistake initially by trying to
>pvcreate the 2 luns of the same physical disk from our storage (fiber
>channel) and now, while trying to create a new logical volume, I get
>this weird error, for the record the sda and sdb are the 2 luns coming
>from different paths (cards):
>
you posted before about multipathing,
and you got one answer.
what did you do for the multipathing issue you had?

L.

-- 
Luca Berra -- bluca@comedia.it
        Communication Media & Services S.r.l.
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Re: [linux-lvm] lvm and duplicates...

[C'est Pierre]

Hello Luca

On 6/8/06, Luca Berra <bluca@comedia.it> wrote:
> On Wed, Jun 07, 2006 at 06:38:49PM +0100, C'est Pierre wrote:
> >Greetings,
> >
> >I'm trying to setup a cluster with ServiceGuard but I am going through
> >a lot of hassles doing so. I did a mistake initially by trying to
> >pvcreate the 2 luns of the same physical disk from our storage (fiber
> >channel) and now, while trying to create a new logical volume, I get
> >this weird error, for the record the sda and sdb are the 2 luns coming
> >from different paths (cards):
> >
> you posted before about multipathing,
> and you got one answer.
> what did you do for the multipathing issue you had?


You're right about that. We tried the multipathing, but suddenly one
of the nodes fc card, stopped working and we need to make a couple of
tests before our trial version of the clustering software expires, as
such, we need to fix the LVM problem before we get into the multipath
subject, which will only happen once HP replaces our FC card



> L.
>

Re: [linux-lvm] lvm and duplicates...

[Luca Berra]

On Thu, Jun 08, 2006 at 10:48:40AM +0100, C'est Pierre wrote:
>Hello Luca
>
>On 6/8/06, Luca Berra <bluca@comedia.it> wrote:
>>On Wed, Jun 07, 2006 at 06:38:49PM +0100, C'est Pierre wrote:
>> >Greetings,
>> >
>> >I'm trying to setup a cluster with ServiceGuard but I am going through
>> >a lot of hassles doing so. I did a mistake initially by trying to
>> >pvcreate the 2 luns of the same physical disk from our storage (fiber
>> >channel) and now, while trying to create a new logical volume, I get
>> >this weird error, for the record the sda and sdb are the 2 luns coming
>> >from different paths (cards):
>> >
>>you posted before about multipathing,
>>and you got one answer.
>>what did you do for the multipathing issue you had?
>
>
>You're right about that. We tried the multipathing, but suddenly one
>of the nodes fc card, stopped working and we need to make a couple of
>tests before our trial version of the clustering software expires, as
>such, we need to fix the LVM problem before we get into the multipath
>subject, which will only happen once HP replaces our FC card

but you just said that sda and sdb are the same disk seen from two
different paths?

-- 
Luca Berra -- bluca@comedia.it
        Communication Media & Services S.r.l.
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