Developers Guide

Server configuration
38 Dell EMC SC Series with Red Hat Enterprise Linux 7x | CML1071
3.6 /etc/multipath.conf and SC Series volume definition
The SC Series storage device definitions are incorporated into the kernel. Use /etc/multipath.conf within its
native syntax constraints as shown in the following. In this example, all other vendor devices are blocked
while the SC Series storage devices are identified in the blacklist_exceptions clause by means of their
unique WWID values. This /etc/multipath.conf configuration applies only in FC and iSCSI implementations;
the SAS /etc/multipath.conf configuration is discussed in section 3.3.2 and should be used instead in SAS
implementations.
# cat /etc/multipath.conf
# multipath.conf written by anaconda
defaults {
find_multipaths yes
user_friendly_names yes
}
blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z]"
devnode "^dcssblk[0-9]*"
device {
vendor "DGC"
product "LUNZ"
}
device {
vendor "IBM"
product "S/390.*"
}
# don't count normal SATA devices as multipaths
device {
vendor "ATA"
}
# don't count 3ware devices as multipaths
device {
vendor "3ware"
}
device {
vendor "AMCC"
}
# nor highpoint devices
device {
vendor "HPT"
}
wwid "20080519"
wwid "20080519"
device {
vendor iDRAC
product Virtual_CD
}
device {