Setup Multipath Disk Mapper On Linux

1. install packages multipath

# yum install device-mapper-multipath

2. Enable config multipath.conf

# mpathconf --enable

3. Configure multipath.conf

# vi /etc/multipath.conf

defaults {
          path_selector "round-robin 0"
          path_grouping_policy failover
          failback immediate
          no_path_retry fail
          user_friendly_names no
          find_multipaths yes
          enable_foreign "^$"
}

blacklist_exceptions {
          property "(SCSI_IDENT_|ID_WWN)"
}

blacklist {
}

4. Restart service multipathd

# systemctl restart multipathd

5. Show multipath disk that assign on your system

# multipath -ll

if your system can’t found the new multipath disk, you can scan the new disk with the command :

# rescan-scsi-bus.sh