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? 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 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
