One simple question. Did you observe if multipathd is (still) running ? (when the port was enabled) On Thu, 2009-07-02 at 13:27 +0200, Christian May wrote: > Hi, > > I've setup an IBM z10 LPAR (mainframe server) with 2.6.30-kernel. > Attached to the System z10 was an IBM DS8000 storage server. 10x SCSI > LUNs were assigned to LPAR via two pathes: > > Example: > 36005076303ffc1040000000000001269 dm-9 IBM,2107900 > size=1.0G features='1 queue_if_no_path' hwhandler='0' wp=rw > `-+- policy='round-robin 0' prio=-2 status=active > |- 0:0:0:1080639506 sdw 65:96 active undef running > `- 1:0:1:1080639506 sdt 65:48 active undef running > > Special parameter setting: dev_loss_tmo=90sec; fast_io_fail_tmo=5sec > > multipath tools: multipath-tools v0.4.9 (04/04, 2009) > device-mapper: device-mapper-1.02.27-7.fc10.s390x, > device-mapper-libs-1.02.27-7.fc10.s390x > > When removing a remote port (disabling a port on the BROCADE FC switch) > one path failed. > > root@h42lp26/ESAME:~] > > multipath -l > 36005076303ffc1040000000000001268 dm-8 , > size=1.0G features='1 queue_if_no_path' hwhandler='0' wp=rw > `-+- policy='round-robin 0' prio=-2 status=active > |- #:#:#:# - #:# failed undef running > `- 1:0:1:1080573970 sdr 65:16 active undef running > > After a while (>90sec) SCSI LUNs were removed from system: > > > UEVENT[1246531815.619428] add /kernel/uids/74 (uids) > UDEV [1246531815.621708] add /kernel/uids/74 (uids) > UEVENT[1246531816.725299] remove /kernel/uids/74 (uids) > UDEV [1246531816.726151] remove /kernel/uids/74 (uids) > UEVENT[1246531929.959709] change /devices/virtual/block/dm-0 (block) > UEVENT[1246531929.959749] change /devices/virtual/block/dm-3 (block) > UEVENT[1246531929.959759] change /devices/virtual/block/dm-4 (block) > UEVENT[1246531929.959769] change /devices/virtual/block/dm-5 (block) > UEVENT[1246531929.966647] change /devices/virtual/block/dm-7 (block) > UDEV [1246531930.045444] change /devices/virtual/block/dm-4 (block) > UDEV [1246531930.048923] change /devices/virtual/block/dm-7 (block) > UDEV [1246531930.054614] change /devices/virtual/block/dm-0 (block) > UDEV [1246531930.060091] change /devices/virtual/block/dm-3 (block) > UDEV [1246531930.071744] change /devices/virtual/block/dm-5 (block) > UEVENT[1246531949.278541] change /devices/virtual/block/dm-9 (block) > UDEV [1246531949.369690] change /devices/virtual/block/dm-9 (block) > UEVENT[1246531950.295756] change /devices/virtual/block/dm-8 (block) > UEVENT[1246531950.297597] change /devices/virtual/block/dm-6 (block) > UEVENT[1246531950.297610] change /devices/virtual/block/dm-2 (block) > UEVENT[1246531950.297620] change /devices/virtual/block/dm-1 (block) > UDEV [1246531950.430097] change /devices/virtual/block/dm-8 (block) > UDEV [1246531950.588626] change /devices/virtual/block/dm-2 (block) > UDEV [1246531950.632482] change /devices/virtual/block/dm-1 (block) > UDEV [1246531950.634515] change /devices/virtual/block/dm-6 (block) > UEVENT[1246532034.277177] remove > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080377362/scsi_generic/sg0 > (scsi_generic) > UEVENT[1246532034.277214] remove > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080377362/scsi_device/0:0:0:1080377362 > (scsi_device) > UEVENT[1246532034.277226] remove > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080377362/scsi_disk/0:0:0:1080377362 > (scsi_disk) > UEVENT[1246532034.277236] remove /devices/virtual/bdi/8:0 (bdi) > UEVENT[1246532034.277247] remove > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080377362/block/sda > (block) > UEVENT[1246532034.277258] remove > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080377362 > (scsi) > UEVENT[1246532034.277384] remove > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080836114/scsi_generic/sg2 > (scsi_generic) > UEVENT[1246532034.277594] remove > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080836114/scsi_device/0:0:0:1080836114 > (scsi_device) > UEVENT[1246532034.277864] remove > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080836114/scsi_disk/0:0:0:1080836114 > (scsi_disk) > UEVENT[1246532034.278035] remove /devices/virtual/bdi/8:32 (bdi)... > > .... > > When re-enabling the path, SCSI LUNS were reassigned to system but path > didn't recover: > > UEVENT[1246532107.387169] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080836114 > (scsi) > UEVENT[1246532107.387209] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080836114/scsi_device/0:0:0:1080836114 > (scsi_device) > UEVENT[1246532107.387220] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080836114/scsi_generic/sg0 > (scsi_generic) > UEVENT[1246532107.387230] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080836114/scsi_disk/0:0:0:1080836114 > (scsi_disk) > UEVENT[1246532107.388941] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080377362 > (scsi) > UEVENT[1246532107.388952] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080377362/scsi_device/0:0:0:1080377362 > (scsi_device) > UEVENT[1246532107.388963] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080377362/scsi_generic/sg2 > (scsi_generic) > UEVENT[1246532107.397111] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080836114/block/sdu > (block) > UEVENT[1246532107.399249] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080639506 > (scsi) > UEVENT[1246532107.399261] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080639506/scsi_device/0:0:0:1080639506 > (scsi_device) > UEVENT[1246532107.399272] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080639506/scsi_generic/sg4 > (scsi_generic) > UEVENT[1246532107.399711] add /devices/virtual/bdi/65:64 (bdi) > UEVENT[1246532107.399722] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080377362/scsi_disk/0:0:0:1080377362 > (scsi_disk) > UEVENT[1246532107.401605] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080573970 > (scsi) > UEVENT[1246532107.401617] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080573970/scsi_device/0:0:0:1080573970 > (scsi_device) > UEVENT[1246532107.401628] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080573970/scsi_generic/sg6 > (scsi_generic) > UEVENT[1246532107.403731] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080967186 > (scsi) > UEVENT[1246532107.403742] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080967186/scsi_device/0:0:0:1080967186 > (scsi_device) > UEVENT[1246532107.403753] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080967186/scsi_generic/sg8 > (scsi_generic) > UEVENT[1246532107.405963] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080377362/block/sdv > (block) > UEVENT[1246532107.406168] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080901650 > (scsi) > UEVENT[1246532107.407608] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080901650/scsi_device/0:0:0:1080901650 > (scsi_device) > UEVENT[1246532107.407624] add > /devices/css0/0.0.0330/0.0.1780/host0/rport-0:0-0/target0:0:0/0:0:0:1080901650/scsi_generic/sg10 > (scsi_generic) > UEVENT[1246532107.407880] add /devices/virtual/bdi/65:80 (bdi) > > > [root@h42lp26/ESAME:~] > > multipath -l > 36005076303ffc1040000000000001268 dm-8 , > size=1.0G features='1 queue_if_no_path' hwhandler='0' wp=rw > `-+- policy='round-robin 0' prio=-2 status=active > |- #:#:#:# - #:# failed undef running > `- 1:0:1:1080573970 sdr 65:16 active undef running > > > Running "multipath" command will recover the failed path but that's not > way it should be...can somebody help to fix this? Why is the path not > recovered automatically? > > > Regards, > > > Christian May > > > > > > > > > > > > > -- > dm-devel mailing list > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
