On Fri, Nov 21, 2008 at 01:54:01PM -0600, Daniel Keisling wrote: > I am still getting multipath errors when unpresenting and presenting > LUNs. I've traced it down to getting path failures everytime I either > remove or add a LUN to the system. The strange thing is that I get path > errors for maps that aren't related to the LUNs I am deleting or adding. > In this case, I am deleting the LUN with the map 'mpath18,' but other > maps complain whenever the LUN is deleted: > > Nov 21 13:47:05 ausracdbd01 multipathd: checker failed path 67:208 in > map orabackup_hs > Nov 21 13:47:05 ausracdbd01 kernel: device-mapper: multipath: Failing > path 67:208. > Nov 21 13:47:08 ausracdbd01 multipathd: checker failed path 70:160 in > map mpath18 > Nov 21 13:47:08 ausracdbd01 kernel: device-mapper: multipath: Failing > path 70:160. > Nov 21 13:47:09 ausracdbd01 multipathd: checker failed path 69:0 in map > orabackup_hs > Nov 21 13:47:09 ausracdbd01 kernel: device-mapper: multipath: Failing > path 69:0. > Nov 21 13:47:10 ausracdbd01 multipathd: checker failed path 65:192 in > map ph1d > Nov 21 13:47:10 ausracdbd01 kernel: device-mapper: multipath: Failing > path 65:192. > Nov 21 13:47:10 ausracdbd01 multipathd: checker failed path 65:224 in > map limsd > Nov 21 13:47:10 ausracdbd01 kernel: device-mapper: multipath: Failing > path 65:224. > Nov 21 13:47:10 ausracdbd01 multipathd: checker failed path 65:240 in > map limsd_arch > Can you attach the 'multipath -ll' output? Run the program before you delete/add the LUNs and after, please. How do you delete/add the LUNs? Are you re-using the LUN number, or are you actually deleting a LUN, deleting the block device as well, and then when adding (with a new LUN number higher than the deleted one), rescanning the SCSI host channel to get the new block device for the LUN? -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
