Red Hat Bugzilla – Bug 1253790
Consume fix for "iscsi_session recovery_tmo revert back to default when a path becomes active"
Last modified: 2016-03-10 10:12:58 EST
Description of problem:
iSCSI default replacement_timeout is 120 seconds, resulting in too slow
iSCSI failover in multipath setup. In vdsm, this may lead to blocking of
multiple unrelated vdsm threads for many minutes, when lvm, multipath
ore scsi scan operation blocks.
This issue was resolved in multipath (bug 1099932), by configuring iscsi
session recovery_tmo sysfs attribute to multipath fast_io_fail_tmo
value, (5 seconds in vdsm configuration). However, this configuration
was reverted to the default 120 seconds after a device went down an up
again, or after restart of the iscsid daemon (bug 1139038).
This issue was fixed in kernel-3.10.0-295.el7. In this version, setting
session recovery_tmo using sysfs overrides the default value defined in
iscsid configuration file.
Vdsm need to require a kernel containing a fix for this issue on Fedora
versions including this fix.
shouldn't this bug has 3.5.z? flag set if the target milestone is set to 3.5.6?
trying to understand how clone candidates are treated in the new classification
(In reply to Eyal Edri from comment #1)
> shouldn't this bug has 3.5.z? flag set if the target milestone is set to
> trying to understand how clone candidates are treated in the new
Yeah, probably so.
This is waiting for qa-ack+ so we can clone it.
Gil - can you assist?
Verified on vdsm-126.96.36.199-0.el7ev.noarch with kernel 3.10.0-327.el7.x86_64
Since oVirt 3.6.0 has been released, moving from verified to closed current release.