To me fix doesn't actually appear to work. After upgrading to multipath-
tools 0.4.9-3ubuntu7.4on an amd64 trusty and rebooting, the
fast_io_fail_tmo and dev_loss_tmo values do not get written to sysfs:
$ grep . /sys/class/fc_remote_ports/*/*_tmo
/sys/class/fc_remote_ports/rport-2:0-0/dev_loss_tmo:30
/sys/class/fc_remote_ports/rport-2:0-0/fast_io_fail_tmo:off
/sys/class/fc_remote_ports/rport-2:0-1/dev_loss_tmo:30
/sys/class/fc_remote_ports/rport-2:0-1/fast_io_fail_tmo:off
/sys/class/fc_remote_ports/rport-3:0-0/dev_loss_tmo:30
/sys/class/fc_remote_ports/rport-3:0-0/fast_io_fail_tmo:off
/sys/class/fc_remote_ports/rport-3:0-1/dev_loss_tmo:30
/sys/class/fc_remote_ports/rport-3:0-1/fast_io_fail_tmo:off
The device stanza from multipath.conf contains the following:
device {
vendor "DGC|EMC"
product "RAID [0-9]*|VRAID|SYMMETRIX.*"
path_grouping_policy group_by_prio
getuid_callout "/lib/udev/scsi_id --whitelisted
--device=/dev/%n"
path_selector "round-robin 0"
path_checker emc_clariion
features "0"
hardware_handler "1 emc"
prio emc
failback immediate
rr_weight uniform
no_path_retry queue
rr_min_io 100
fast_io_fail_tmo 3
dev_loss_tmo 2147483647
}
FWIW, I can manually set the sysfs settings to the desired values:
$ echo 3 | sudo tee /sys/class/fc_remote_ports/rport-*/fast_io_fail_tmo
3
$ echo 2147483647 | sudo tee /sys/class/fc_remote_ports/rport-*/dev_loss_tmo
2147483647
$ grep . /sys/class/fc_remote_ports/*/*_tmo
/sys/class/fc_remote_ports/rport-2:0-0/dev_loss_tmo:2147483647
/sys/class/fc_remote_ports/rport-2:0-0/fast_io_fail_tmo:3
/sys/class/fc_remote_ports/rport-2:0-1/dev_loss_tmo:2147483647
/sys/class/fc_remote_ports/rport-2:0-1/fast_io_fail_tmo:3
/sys/class/fc_remote_ports/rport-3:0-0/dev_loss_tmo:2147483647
/sys/class/fc_remote_ports/rport-3:0-0/fast_io_fail_tmo:3
/sys/class/fc_remote_ports/rport-3:0-1/dev_loss_tmo:2147483647
/sys/class/fc_remote_ports/rport-3:0-1/fast_io_fail_tmo:3
Tore
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https://bugs.launchpad.net/bugs/1435706
Title:
DevLossTO, FastIoFailTO settings do not match multipath.conf expected
values
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