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Re: [linux-lvm] RE: using lvm mirroring in clusters



AZZOPARDI Konrad wrote:
 Hi list,

I am quite new to RedHAt clustering and I am experimenting with RedHat 5.3. I read that LVM mirrors are now supported in cluster mode. At our work place we have two datacentres and each DC has an HDS SAN. The idea is that I put two cluster nodes in each DC and each node will be presented with two multipathed block devices say /dev/dm-5 and /dev/dm-6. How can I create 2 mirrored LVs out of a volume group {comprising the two devices} and assuring that the mirrors are spread between the two devices {to give me the assurance that if one DC is down, data is available in the other device}

Thanks
konrad

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read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Hi Konrad,
it is as simple as:
# lvcreate -L $SIZE -m1 -n $LV $VG $PV1 $PV2 ...

The "$PV1 $PV2" part does the trick.

See man lvcreate and search the web for details.

-- Marian


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