Dell Shared PowerEdge RAID Controller (PERC) 8 For Dell PowerEdge VRTX Systems User’s Guide
Installing multipath in Linux
In Linux, multipathing is supported using the device-mapper multipath module.
The device-mapper module should be installed if not part of the default install: device-mapper-multipath-<version>(RHEL) and device-mapper-<version>(SLES). This can be installed using any of the update manager tools like yum or yast.The following are sample multipath.conf files that can be used for Linux multipath configuration. The files may require modification based on your particular configuration requirements. Refer to the documentation provide by the Linux distribution vendor for further guidance on multipath configuration.
RHEL 6.5
defaults {
verbosity 2
polling_interval 10
checker_timeout 90
}
devices {
device {
vendor "DELL"
product "Shared PERC8"
hardware_handler "1 alua"
path_grouping_policy failover
prio alua
path_checker tur
rr_weight priorities
failback immediate
no_path_retry fail
path_selector "round-robin 0"
flush_on_last_del no
user_friendly_names "yes"
features "0"
fast_io_fail_tmo 5
}
}
RHEL 7.1
defaults {
verbosity 2
polling_interval 10
uid_attribute "ID_SERIAL"
checker_timeout 90
}
devices {
device {
vendor "DELL"
product "Shared PERC8"
hardware_handler "1 alua"
path_grouping_policy failover
prio alua
path_checker tur
rr_weight priorities
failback immediate
no_path_retry fail
path_selector "round-robin 0"
flush_on_last_del no
user_friendly_names "yes"
alias_prefix "mpath-sperc"
features "0"
fast_io_fail_tmo 5
}
}
blacklist {
wwid "<WWID of OS VD>"
}
SLES 11
defaults {
verbosity 2
polling_interval 10
uid_attribute "ID_SERIAL"
checker_timeout 90
}
devices {
device {
vendor "DELL"
product "Shared PERC8"
hardware_handler "1 alua"
path_grouping_policy failover
prio alua
path_checker tur
rr_weight priorities
failback immediate
no_path_retry fail
path_selector "round-robin 0"
flush_on_last_del no
user_friendly_names "yes"
alias_prefix "mpath-sperc"
features "0"
fast_io_fail_tmo 5
}
}
SLES 12
defaults {
verbosity 2
polling_interval 10
uid_attribute "ID_SERIAL"
checker_timeout 90
}
devices {
device {
vendor "DELL"
product "Shared PERC8"
hardware_handler "1 alua"
path_grouping_policy failover
prio alua
path_checker tur
rr_weight priorities
failback immediate
no_path_retry fail
path_selector "round-robin 0"
flush_on_last_del no
user_friendly_names "yes"
alias_prefix "mpath-sperc"
features "0"
fast_io_fail_tmo 5
}
}
blacklist {
wwid "<WWID of OS VD>"
}
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