Hi, Rumor has it that on Thu, May 04, 2006 at 09:41:20AM +0200 Guido Guenther said: > Hi, > when using path_checker readsector0 on the above machine the box stalls > every 5 seconds when checking the currently nonactive path. Same for > path_checker tur. Is there a way to avoid this? I'd consider writing a > specific checker but am lacking any documentation. This thing is a preferred path array. I can see how readsector0 is probably the wrong choice of checker. I imagine it causes a cache flush from the preferred controller. Odd that the tur checker has the same behavior. If you want to code something you might try a checker that just does a standard INQUIRY. I'd think that would not cause a cache flush, but then I'd have thought that about the TUR as well... Such a checker may be useful for other preferred path arrays. I've got an STK array here but haven't gotten access to it yet to run dm-multipath so I can't confirm having seen this problem. Cheers, Phil > Cheers, > -- Guido > > -- > > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel -- Philip R. Auld, Ph.D. Egenera, Inc. Software Architect 165 Forest St. (508) 858-2628 Marlboro, MA 01752 -- dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
