I would appreciate an explanation of "no_path_retry nn" parameter in multipath.conf. Probably I misunderstood it as a number of seconds. I am setting up a software mirror (mdadm) on top of an EMC Clariion configuration for desaster protection. The Clariions are recognized by multipath properly; it seems to be set up with "no_path_retry 60" (according to multipath -t). I had no further settings in multipath.conf; this seems to be hardcoded into multipath. However, If I disconnect one Clariion, th mirror doesnt break - multipath detects that all paths are failed and tells me that it will now wait for 60 retries. These 60 retries seem to last very long; atfter 5 minutes, it didnt complete. Evertyhing works fine if I set up a multipath.conf containing the Clariion settings from multipath -t and modify them to "no_path_retry fail" and "features 0 fail_if_no_path". But even if I just reduce the default settings to no_path_retry 2 the mirror doesnt break - the IOs seem to hang indefinitely (well, I lost patience after ~5 minutes). Probably I misunderstood "no_path_retry 60" - does that mean seconds, or minutes, or what else? Is anything except "fail" a useful setting in mirrored configurations? system is a Suse with multipath-tools-0.4.7-34.43 Thanks Diedrich -- Diedrich Ehlerding, Fujitsu Technology Solutions GmbH, R GE TIS N IC2 Hildesheimer Str 25, D-30880 Laatzen Fon +49 511 8489-1806, Fax -251806, Mobil +49 173 2464758 Firmenangaben: http://de.ts.fujitsu.com/imprint.html -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
