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Description of problem: a QLA2462 HBA with two ports attached to IBM SVC via brocade swith,when disabling one port of the swith,one path became fail, after enabling this port,the path can't recovery, in /var/log/mesage, always print multipathd: error calling out /sbin/mpath_prio_alua /dev/sdt Version-Release number of selected component (if applicable): 2.6.9-67.EL #1 SMP Wed Nov 7 13:43:35 EST 2007 ia64 ia64 ia64 GNU/Linux # rpm -qa | grep mapper device-mapper-multipath-0.4.5-27.RHEL4 device-mapper-1.02.21-1.el4 How reproducible: Steps to Reproduce: 1.disable one port of switch attach to the IBM SVC 2.the path is fail 3.enable this port Actual results: #multipath -l path14 path14 (360050768018082ddc00000000000098c) [size=1 GB][features="1 queue_if_no_path"][hwhandler="0"] \_ round-robin 0 [enabled] \_ 3:0:0:1 sdt 65:48 [failed][faulty] \_ round-robin 0 [enabled] \_ 2:0:0:1 sdc 8:32 [active] one path of LUN failed and after enable the port with this path, path can't recovery. but the other paths is ok, for example : path1 (360050768018082ddc000000000000993) [size=1 GB][features="1 queue_if_no_path"][hwhandler="0"] \_ round-robin 0 [enabled] \_ 2:0:0:8 sdj 8:144 [active] \_ round-robin 0 [enabled] \_ 3:0:0:8 sdaa 65:160 [active] Expected results: all paths recovery correctly after the port enabled. Additional info: in /var/log/message, always print kernel: device-mapper: dm-multipath: Failing path 65:144. May 3 09:30:56 archprx26k46328 kernel: end_request: I/O error, dev sdz, sector 996112 May 3 09:30:56 archprx26k46328 multipathd: 65:144: mark as failed May 3 09:30:56 archprx26k46328 multipathd: path3: remaining active paths: 1 actually the two paths are OK
Hi, I've got a similar behavior on 4.8. Linux b25lciapp48.con.can.ibm.com 2.6.9-89.ELlargesmp #1 SMP Mon Apr 20 10:43:12 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux Red Hat Enterprise Linux AS release 4 (Nahant Update 8) device-mapper-multipath-0.4.5-35.el4 device-mapper-1.02.28-2.el4 -- We've been seeing messages like this for quite a while: multipathd: error calling out /sbin/mpath_prio_alua /dev/sdj Unfortunately it took a while to discover this problem w/ the machine and we lost the early entries.
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