> > Sounds like you multipath devices are set to "queue_if_no_path" which > basically tells the multipath layer to queue all request forever even if > there are no available paths. You can generally free hung commands on a > device that is not coming back by setting "fail_if_no_path" on the > device with dmsetup. The command would be something like this: > > dmsetup message mpath23 0 fail_if_no_path > > Once you do that the multipath layer should return errors to the hung > command and it should exit. > > Here's a reference in the Redhat manuals: > > > http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/DM_Multipath/queueifnopath_issues.html > > Once the command errors out you should be able to manually remove the > failed paths. The "multipath -F" command should remove any unused > multipath maps, however, unused means that the VG needs to be > deactivated first. Once you set "fail_if_no_path" you should be able to > deactivate the VG even though all paths are down.
I will try this. Everything is indeed queue if no path. Much thanks! -Eugene
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