1. SSH auto login
{{{
sudo su
Server : ssh node_name  (known_host)
Client: ssh node_name
}}}
Allnode :ssh-keygen -r rsa
{{{
cd .ssh
cat id_rsa.pub >> authorized_keys
cat /tftboot/nodes/192.../root/.ssh/id_rsa.pub >> authorized_keys

cp authorized_keys known_hosts /tftpboot/nodes/192.../root/.ssh
}}}

2. Config Nodes and Disks
{{{
vim gpfs.nodes
「gpfs00.nchc.org.tw:quorum-manager
   gpfs01.nchc.org.tw:quorum-manager
   gpfs02.nchc.org.tw:quorum-manager」

vim gpfs.disks
「/dev/sdb:gpfs01.nchc.org.tw::dataAndMetadata::
   /dev/sdb:gpfs02.nchc.org.tw::dataAndMetadata::
   /dev/sdb:gpfs03.nchc.org.tw::dataAndMetadata::」
}}}

3. Create Cluster
{{{
mmdelnode -f
mmcrcluster -n gpfs.nodes -p gpfs01.nchc.org.tw -s gpfs02.nchc.org.tw  -r `which ssh` -R `which scp`
「-p: 主NSD \Server
   -s: 備用 NSD Server
   -C: Cluster name
   -U: Domain name」

mmlscluster
mmlsnode -a
}}}

4. Perpare Disks as NSD
{{{
cp gpfs.dsiks gpfs.disks.orig
mmcrnsd -F gpfs.disks
(mcrnsd -F gpfs.disks -v yes)

mmlsnsd
}}}

5. Start GPFS daemon
{{{
mmstartup -a
mmgetstate -a
tsstatus
mmlsmod | grep mm
ps -aux | grep mm
}}}

6. Create FS
{{{
mmcrfs /home/gpfs gpfs0 -F gpfs.disks
(mmcrfs /home/gpfs gpfs0 -F gpfs.disks -A yes)
(mmcrfs /home/gpfs gpfs0 -F gpfs.disks -B 256K)
(mmcrfs /home/gpfs gpfs0 -F gpfs.disks -B 1024K -m 1 -M 2 -r 1 -R 2)
(mmcrfs /home/gpfs gpfs0 -F gpfs.disks -A yes -v no)

(/home/gpfs: mount point
 gpfs0: 系統文件名 /dev/gpfs0
-A: auto mount
 -B: block
 -n: 掛載fs的node數
)

mmlsdisk gpfs0
}}}

7. Mount FS
{{{
法一：mmcrfs /home/gpfs gpfs0 -F gpfs.disks -A yes
法二：mmmount /home/gpfs -a
法三：vim /etc/fstab
「/dev/gpfs0    /home/gpfs    gpfs    rw,mtime,atime,dev=/dev/gpfs0,autostart 0 0」
}}}

8. Other
{{{
mmlsconfig

mmchconfig autoload=yes
mmchconfig singleNodeQuorum=no

增加node
mmaddnode -N fs04:client

停掉node
mmshutdown -a
mmshutdown -N node

rm -fr /var/mmfs....
or
mmdelnode -a
}}}