Specifications

DS300f G2 Series User Manual
255
WithaFibreChannelswitch,adev_loss_tmovaluesettoosmallcanresultinlossofthepathduringfailover/
failback.
Linuxmaintainstherportsdev_loss_tmovalueinthe/sys/class/fc_remote_port/rport-xxxx/dev_loss_tmole.
TheFibreChannelHBAdriversetsthisvalueatloadingtime.
Tochangethedev_loss_tmovaluetotherecommended60seconds,duringruntimetypetheechocommand:
echo60>/sys/class/fc_remote_port/rpot-1:0:0/dev_loss_tmo
saMple MultIpath.Conf fIle
Belowisacompletemultipath.confleforASUSDS300fG2.
• IfyouhavenoothermultipathdevicesonyourHost,youcanusethismultipath.confleasshown.
• Ifyouhaveothermultipathdevices,addthesesettingstoyourexistingmultipath.confle.
##
##Thisisatemplatemultipath-toolscongurationle
##fortheASUSStorageASUSDS300fG2subsystem
##
defaults {
 user_friendly_names yes
}
blacklist {
devnode “^sda$”
 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]*]”
}
devices {
device {
vendor “ASUS Storage”
 product “ASUSDS300fG2”
 path_grouping_policymultibus
 getuid_callout “/sbin/scsi_id-g-u-s/block/%n”
 path_checker readsector0
 path_selector “round-robin0”
 hardware_handler “0”
 failback immediate
 rr_weight uniform
 rr_min_io 100
 no_path_retry 20
features “1 queue_if_no_path”
 product_blacklist“ASUSDS300fG2V-LUN”
}
}