'''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). Final, we will see 3.3T in our environment. ||

 * 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
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1              19G  7.1G   11G  41% /
tmpfs                 1.5G     0  1.5G   0% /lib/init/rw
udev                   10M   68K   10M   1% /dev
tmpfs                 1.5G  8.0K  1.5G   1% /dev/shm
/dev/sdb1             294G   13G  266G   5% /home/mount
/dev/gpfs0            3.1T  473M  3.1T   1% /home/gpfs_mount

}}}

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