How to Modify "replacement_timeout" of Already Discovered ISCSI Targets
Last updated on NOVEMBER 07, 2017
Applies to:Linux OS - Version Oracle Linux 5.0 to Oracle Linux 5.11 with Unbreakable Enterprise Kernel [2.6.39] [Release OL5 to OL5U11]
"replacement_timeout" controls how long the iSCSI layer should wait for a timed-out path/session to reestablish itself before failing any commands on it. The default "replacement_timeout" value is 120 seconds.
By configuring a lower replacement_timeout, I/O is quickly sent to a new path and executed (in the event of a NOP-Out timeout) while the iSCSI layer attempts to re-establish the failed path/session.
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