Open:

We will demo "How to deploy GPFS nodes massively using Diskless Remote Boot Linux".

Conetxt:
||We start on 7 node and use 11 disks(6*160G + 5*320G=2.5T), then we dynamic add 3 disks(1*160G + 2*320G=0.8T) ||

 * Installation

 * DRBL Test 
{{{
$ sudo /opt/drbl/sbin/dcs
}}}

 * GPFS Test
{{{
$ sudo su
$ cat gpfs.nodes
gpfs00:quorum
gpfs01:quorum
gpfs02:
gpfs03:
gpfs04:
gpfs05:
gpfs06:
gpfs07:

$ mmcrcluster -N gpfs.nodes -p gpfs00 -s gpfs01 -r /usr/bin/ssh -R /usr/bin/scp
$ mmlscluster
$ mmlsnode -a

$ cat gpfs.disks
/dev/sda:gpfs01::dataAndMetadata::
/dev/sdb:gpfs01::dataAndMetadata::
/dev/sda:gpfs02::dataAndMetadata::
/dev/sdb:gpfs02::dataAndMetadata::
/dev/sda:gpfs03::dataAndMetadata::
/dev/sdb:gpfs03::dataAndMetadata::
/dev/sda:gpfs04::dataAndMetadata::
/dev/sdb:gpfs04::dataAndMetadata::
/dev/sda:gpfs05::dataAndMetadata::
/dev/sdb:gpfs05::dataAndMetadata::
/dev/sda:gpfs06::dataAndMetadata::

$ mmcrnsd  -F gpfs.disks
($ mmcrnsd -F gpfs.disks -v no) --> if this disk ever used for gpfs
$mmlsnsd

$ mmstatup -a
$ mmgetstate -a
$ tsstatus

$ mmcrfs /home/gpfs_mount gpfs0 -F gpfs.disks -B 1024K -r 1 -R 2 -m 1 -M 2 
($ mmcrfs /home/gpfs_mount gpfs0 -F gpfs.disks -B 1024K -r 2  -R 2 -m 2 -M 2 )  --> enable data replicate

$ mmmount gpfs0 /home/gpfs_mount
$ df -h

$ cat gpfs.adddisks
/dev/sdb:gpfs06::dataAndMetadata::
/dev/sda:gpfs07::dataAndMetadata::
/dev/sdb:gpfs07::dataAndMetadata::

$ mmadddisk  gpfs0 -F gpfs.adddisks -r
$ df -h
}}}

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