On Tuesday, November 28, 2006 4:41 AM, Petteri Heinonen wrote: > To: goggin, edward > Cc: dm-devel@xxxxxxxxxx > Subject: RE: I/O error during path failover > > But couple of additional questions. I have tried to specify > that additional feature "queue_if_no_path" in several places > in multipath.conf, but no matter where I specify it, it does > not appear in "multipath -ll" nor "dmsetup table" outputs. Is > there some known bug in RHEL4u4 for this? Try adding the two directives below to the CLARiiON device or multipath config entries in /etc/multipath.conf. The combination of these 2 directives will queue I/O for up to 5 minutes (that is, 30 times the 10 second polling interval you have configured) whenever all paths to the block device are failed. features "1 queue_if_no_path" no_path_retry 30 > > I have also tried to specify parameter no_path_retry with > several different values, but it doesn't change the output > of "dmsetup table" in any way. Is this ok? No. > I guess that there > should be some visible changes in "dmsetup table", Yes, IFF the queue_if_no_path attribute is enabled, "dmsetup table" should return the string "1 queue_if_no_path". > as dm_* > kernel modules do not read multipath.conf directly, do they? No they don't ... only multipathd threads in user space read /etc/multipath.conf. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
