hi, ich habe zwei ISCSI Datenträger zwei mal eingebunden über verschiedene Netzwerkkarten. Diese habe ich per multipath verbunden. Das klappt soweit gut. Nun habe ich einfach den Stecker von einer Karte gezogen und eigentlich hätte ich erwartet, dass multipath das augenblicklich erkennt und umschaltet. Doch zwischen Kabel ziehen und umschalten sind locker 6 Minuten vergangen:
Jun 2 01:24:49 dom0 multipathd: vm03-swap: event checker started Jun 2 01:24:59 dom0 multipathd: vm03-disk: stop event checker thread Jun 2 01:24:59 dom0 multipathd: vm03-swap: stop event checker thread Jun 2 01:25:01 dom0 multipathd: vm03-disk: event checker started Jun 2 01:25:01 dom0 multipathd: vm03-swap: event checker started Jun 2 01:25:01 dom0 multipathd: path checkers start up Jun 2 01:35:38 dom0 kernel: kjournald starting. Commit interval 5 seconds Jun 2 01:35:38 dom0 kernel: EXT3 FS on dm-9, internal journal Jun 2 01:35:38 dom0 kernel: EXT3-fs: mounted filesystem with ordered data mode. Jun 2 01:35:59 dom0 kernel: tg3: eth1: Link is down. Jun 2 01:41:22 dom0 kernel: connection0:0: iscsi: detected conn error (1011) Jun 2 01:41:23 dom0 iscsid: detected iSCSI connection 0:0 error (1011) state (3) Jun 2 01:41:26 dom0 iscsid: connect failed (113) Jun 2 01:41:58 dom0 last message repeated 6 times Jun 2 01:43:02 dom0 last message repeated 12 times Jun 2 01:43:18 dom0 last message repeated 3 times Jun 2 01:43:22 dom0 kernel: session0: iscsi: session recovery timed out after 120 secs Jun 2 01:43:22 dom0 kernel: sd 14:0:0:0: scsi: Device offlined - not ready after error recovery Jun 2 01:43:22 dom0 kernel: sd 14:0:0:0: scsi: Device offlined - not ready after error recovery Jun 2 01:43:22 dom0 kernel: sd 14:0:0:0: SCSI error: return code = 0x00020000 Jun 2 01:43:22 dom0 kernel: end_request: I/O error, dev sdb, sector 4736 Jun 2 01:43:22 dom0 kernel: device-mapper: multipath: Failing path 8:16. Jun 2 01:43:22 dom0 multipathd: sdb: readsector0 checker reports path is down Jun 2 01:43:22 dom0 multipathd: checker failed path 8:16 in map vm03-disk Jun 2 01:43:22 dom0 multipathd: vm03-disk: remaining active paths: 1 Jun 2 01:43:22 dom0 multipathd: vm03-disk: switch to path group #2 Jun 2 01:43:24 dom0 iscsid: connect failed (113) Jun 2 01:43:57 dom0 last message repeated 7 times Für virtuelle Gäste ist das mit Sicherheit nicht gesund. Die Config sieht so aus: defaults { user_friendly_names yes } defaults { udev_dir /dev polling_interval 5 default_selector "round-robin 0" default_getuid_callout "/sbin/scsi_id -g -u -s /block/%n" failback immediate } blacklist { wwid SATA_TOSHIBA_MK8032G_163W3498T devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*" devnode "^hd[a-z][[0-9]*]" devnode "^cciss!c[0-9]d[0-9]*[p[0-9]*]" } multipaths { multipath { '''wwid 1494554000000000000000000010000001b1600000d000000''' alias vm03-disk path_grouping_policy failover path_checker readsector0 } multipath { '''wwid 149455400000000000000000002000000261600000d000000''' alias vm03-swap path_grouping_policy failover path_checker readsector0 } } Hat da jemand eine Erklärung für? cu denny
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