#apt-get install multipath-tools multipath-tools-boot
2. create multipath.conf
#cp /usr/share/doc/multipath-tools/examples/multipath.conf.synthetic /etc/multipath.conf
3.modify mutipath.conf
#vim /etc/multipath.conf
defaults {
path_grouping_policy multibus
failback immediate
no_path_retry fail
user_friendly_names yes
}
blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z][[0-9]*]"
devnode "^cciss!c[0-9]d[0-9]*[p[0-9]*]"
}
blacklist define device not included by multipath
4.restart multipath service
#service multipath-tools restart
5.show multipath status
#multipath -ll
mpath0 (360050cc000203d7a0000000000000008) dm-0 OVERLAND,RAID 1200
[size=1.5T][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
\_ 2:0:0:0 sda 8:0 [active][ready]
\_ 2:0:1:0 sdb 8:16 [active][ready]
6. if your disk is GPT format then install fixparts and install deb
#wget http://download.opensuse.org/repositories/home:/srs5694/xUbuntu_10.04/amd64/gptfdisk_0.8.8-1_amd64.de
#dpkg -i gptfdisk_0.8.8-1_amd64.deb
#apt-get -f install
7. format gpt disk
# fixparts /dev/mapper/mpath0
