I am running multipath-tools v0.4.8 (I just pulled from mainstream last week) and kernel version 2.6.27-rc7. I am not seeing "queueing MODE_SELECT command", because this is online/offline test. When you offline the controller the luns are automatically transferred to alt controller. Thanks Babu Moger -----Original Message----- From: dm-devel-bounces@xxxxxxxxxx [mailto:dm-devel-bounces@xxxxxxxxxx] On Behalf Of Mike Anderson Sent: Thursday, October 30, 2008 12:35 PM To: device-mapper development; Chandra Seetharaman Cc: linux-scsi@xxxxxxxxxxxxxxx Subject: Re: i/o error due to all path failure with rdac Moger, Babu <Babu.Moger@xxxxxxx> wrote: > > Hi, > > I am running an online/offline test. I have two paths to the controller. One is active and one is passive. When I fail (offline) the active path (sde 8:64), the Device mapper is failing passive path(sdf 8:80) as well leading to all path failure. Any ideas or hints? > What version of multipath tools and kernel are you running? If this is a newer kernel I would have expected to see "queueing MODE_SELECT command" during failover. > Here is output multipath -ll. I have only one lun. > > [root@localhost ~]# multipath -ll > mpathie (3600a0b80000f6a7d0000cff048fed59c) dm-2 LSI,INF-01-00 > [size=10G][features=1 queue_if_no_path][hwhandler=1 rdac][rw] > \_ round-robin 0 [prio=2][enabled] > \_ 3:0:0:0 sde 8:64 [active][undef] > \_ round-robin 0 [prio=1][enabled] > \_ 3:0:1:0 sdf 8:80 [active][undef] > > > Here is the detailed log. > > Oct 24 16:50:50 localhost multipathd: sdf: rdac prio = 0 > Oct 24 16:51:06 localhost kernel: sd 3:0:0:0: [sde] Result: hostbyte=DID_BUS_BUSY driverbyte=DRIVER_OK,SUGGEST_OK > Oct 24 16:51:06 localhost kernel: end_request: I/O error, dev sde, sector 1047072 > Oct 24 16:51:06 localhost kernel: device-mapper: multipath: Failing path 8:64. > Oct 24 16:51:06 localhost multipathd: mpathie: rr_weight = 2 (controller setting) > Oct 24 16:51:06 localhost multipathd: mpathie: pgfailback = 100 (controller setting) > Oct 24 16:51:06 localhost multipathd: mpathie: no_path_retry = 10 (controller setting) > Oct 24 16:51:06 localhost multipathd: pg_timeout = NONE (internal default) > Oct 24 16:51:06 localhost multipathd: 8:64: mark as failed > Oct 24 16:51:06 localhost multipathd: uevent 'change' from '/block/dm-2' > Oct 24 16:51:06 localhost multipathd: UDEV_LOG=3 > Oct 24 16:51:06 localhost multipathd: ACTION=change > Oct 24 16:51:06 localhost multipathd: DEVPATH=/block/dm-2 > Oct 24 16:51:06 localhost multipathd: SUBSYSTEM=block > Oct 24 16:51:06 localhost multipathd: DM_TARGET=multipath > Oct 24 16:51:06 localhost multipathd: DM_ACTION=PATH_FAILED > Oct 24 16:51:06 localhost multipathd: DM_SEQNUM=1 > Oct 24 16:51:06 localhost multipathd: DM_PATH=8:64 > Oct 24 16:51:06 localhost multipathd: DM_NR_VALID_PATHS=1 > Oct 24 16:51:06 localhost multipathd: DM_NAME=mpathie > Oct 24 16:51:06 localhost multipathd: DM_UUID=mpath-3600a0b80000f6a7d0000cff048fed59c > Oct 24 16:51:06 localhost multipathd: MAJOR=253 > Oct 24 16:51:06 localhost multipathd: MINOR=2 > Oct 24 16:51:06 localhost multipathd: DEVTYPE=disk > Oct 24 16:51:06 localhost multipathd: SEQNUM=1254 > Oct 24 16:51:06 localhost multipathd: UDEVD_EVENT=1 > Oct 24 16:51:06 localhost multipathd: dm-2: add map (uevent) > Oct 24 16:51:08 localhost kernel: device-mapper: multipath: Failing path 8:80. > Oct 24 16:51:08 localhost multipathd: mpathie: devmap event #3 > Oct 24 16:51:08 localhost multipathd: mpathie: discover > Oct 24 16:51:08 localhost multipathd: mpathie: rr_weight = 2 (controller setting) > Oct 24 16:51:08 localhost multipathd: mpathie: pgfailback = 100 (controller setting) > Oct 24 16:51:08 localhost multipathd: mpathie: no_path_retry = 10 (controller setting) > Oct 24 16:51:08 localhost multipathd: pg_timeout = NONE (internal default) > Oct 24 16:51:08 localhost multipathd: 8:80: mark as failed > Oct 24 16:51:08 localhost multipathd: mpathie: Entering recovery mode: max_retries=10 > Oct 24 16:51:08 localhost multipathd: uevent 'change' from '/block/dm-2' > Oct 24 16:51:08 localhost multipathd: UDEV_LOG=3 > Oct 24 16:51:08 localhost multipathd: ACTION=change > Oct 24 16:51:08 localhost multipathd: DEVPATH=/block/dm-2 > Oct 24 16:51:08 localhost multipathd: SUBSYSTEM=block > Oct 24 16:51:08 localhost multipathd: DM_TARGET=multipath > Oct 24 16:51:08 localhost multipathd: DM_ACTION=PATH_FAILED > Oct 24 16:51:08 localhost multipathd: DM_SEQNUM=2 > Oct 24 16:51:08 localhost multipathd: DM_PATH=8:80 > Oct 24 16:51:08 localhost multipathd: DM_NR_VALID_PATHS=0 > Oct 24 16:51:08 localhost multipathd: DM_NAME=mpathie > Oct 24 16:51:08 localhost multipathd: DM_UUID=mpath-3600a0b80000f6a7d0000cff048fed59c > Oct 24 16:51:08 localhost multipathd: MAJOR=253 > Oct 24 16:51:08 localhost multipathd: MINOR=2 > Oct 24 16:51:08 localhost multipathd: DEVTYPE=disk > Oct 24 16:51:08 localhost multipathd: SEQNUM=1255 > Oct 24 16:51:08 localhost multipathd: UDEVD_EVENT=1 > Oct 24 16:51:08 localhost multipathd: dm-2: add map (uevent) > Oct 24 16:51:36 localhost kernel: rport-3:0-2: blocked FC remote port time out: removing target and saving binding > Oct 24 16:51:36 localhost multipathd: sde: rdac checker reports path is down > Oct 24 16:51:36 localhost multipathd: sde: mask = 0x8 > Oct 24 16:51:36 localhost kernel: sd 3:0:0:0: [sde] Synchronizing SCSI cache > Oct 24 16:51:36 localhost kernel: sd 3:0:0:0: [sde] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK > Oct 24 16:51:36 localhost kernel: scsi 3:0:0:0: rdac: Detached > Oct 24 16:51:36 localhost multipathd: uevent 'remove' from '/class/scsi_generic/sg5' > Oct 24 16:51:36 localhost multipathd: UDEV_LOG=3 > Oct 24 16:51:36 localhost multipathd: ACTION=remove > Oct 24 16:51:36 localhost multipathd: DEVPATH=/class/scsi_generic/sg5 > Oct 24 16:51:36 localhost multipathd: SUBSYSTEM=scsi_generic > Oct 24 16:51:36 localhost multipathd: MAJOR=21 > Oct 24 16:51:36 localhost multipathd: MINOR=5 > Oct 24 16:51:36 localhost multipathd: PHYSDEVPATH=/devices/pci0000:00/0000:00:02.0/0000:06:00.3/0000:0b:01.0/host3/rport-3:0-2/target3:0:0/3:0:0:0 > Oct 24 16:51:36 localhost multipathd: PHYSDEVBUS=scsi > Oct 24 16:51:36 localhost multipathd: PHYSDEVDRIVER=sd > Oct 24 16:51:36 localhost multipathd: SEQNUM=1256 > Oct 24 16:51:36 localhost multipathd: UDEVD_EVENT=1 > Oct 24 16:51:36 localhost multipathd: DEVNAME=/dev/sg5 > Oct 24 16:51:36 localhost multipathd: uevent 'remove' from '/class/scsi_device/3:0:0:0' > Oct 24 16:51:36 localhost multipathd: UDEV_LOG=3 > Oct 24 16:51:36 localhost kernel: device-mapper: multipath: Failing path 8:80. > Oct 24 16:51:36 localhost multipathd: ACTION=remove > Oct 24 16:51:36 localhost UnixSmash4[9200]: 7:UnixSmash has experienced a write failure. > > Thanks > Babu Moger > > > -- > dm-devel mailing list > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel -andmike -- Michael Anderson andmike@xxxxxxxxxxxxxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel -- dm-devel mailing list dm-devel@xxxxxxxxxx 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