HP 3PAR Citrix Implementation Guide

devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z]"
devnode "^sda$"
devnode "^sda[0-9]"
devnode "^cciss!c[0-9]d[0-9]*"
}
NOTE: Add other devices as necessary to the blacklist structure as per the configured host.
Modifying the /etc/multipath.conf File for Citrix 5.6 or 6.x
The /etc/multipath.conf file is used by device mapper where the multipathing parameters
have been set.
The default installed /etc/multipath.conf file must be edited to make the following changes:
1. Verify that devnode “*” in the blacklist section is commented out or removed:
#blacklist {
# devnode "*"
#}
2. Edit the devices structure to add entries for HP 3PAR array and remove other product entries
that are not needed.
After all of the edits are made, the relevant sections of /etc/multipath.conf devices
section should appear as follows:
# cat /etc/multipath.conf
defaults {
polling_interval 5
}
devices {
device {
vendor "3PARdata"
product "VV"
no_path_retry 12
features "0"
hardware_handler "0"
path_grouping_policy multibus
path_selector "round-robin 0"
rr_weight uniform
rr_min_io 100
path_checker tur
failback immediate
}
}
NOTE: The /etc/multipath.conf file is replaced when installing Citrix updates to the
Citrix. Reapply the multipath-enabled.conf changes to each host after updates. HP
recommends creating a backup copy of the /etc/multipath.conf file before upgrading
to any MU on the Citrix.
If SCSI devices such as the internal boot disk need to be excluded from being seen by device
mapper, the devices should be added into in devnode blacklist structure.
Setting Up Multipathing Software 23