Much thanks for your interest im putting more info below > jose nuno neto [jose.neto@liber4e.com] wrote: >> Hi >> >> I'm trying to test the failure of a SAN Mirrored Lv, and the recover and >> check for data lost. >> >> Im runing RedHat 5.4 >> 2.6.18-164.2.1.el5 >> lvm2-2.02.46-8.el5_4.1 >> >> I create a 2mirror+log lv ok, can lvconvert to one leg only, can delete >> ok. >> But when I simulate a disk fail either with >> dd if=/dev/zero of=pvmirror_device >> echo offline > /sys/block/pvmirror_device/device/status > > What is the output of "dmsetup status" at this point? > There must be some messages in the /var/log/messages file if you enable > them. This is my setup for the device Im unppluging multipath -l -v2 | grep -A 7 3600a0b800048f9b200000c2b4b5980b7 mpath12 (3600a0b800048f9b200000c2b4b5980b7) dm-8 SUN,CSM200_R [size=52G][features=1 queue_if_no_path][hwhandler=1 rdac][rw] \_ round-robin 0 [prio=0][enabled] \_ 7:0:1:1 sdo 8:224 [active][undef] \_ 9:0:1:1 sdq 65:0 [active][undef] \_ round-robin 0 [prio=0][enabled] \_ 7:0:0:1 sdd 8:48 [active][undef] \_ 9:0:0:1 sdf 8:80 [active][undef] Before UnPluging dmsetup status mpath12 0 109051904 multipath 2 0 0 0 2 1 E 0 2 0 8:224 A 0 65:0 A 0 E 0 2 0 8:48 A 0 8:80 A 0 echo offline > /sys/block/sdd/device/state echo offline > /sys/block/sdo/device/state echo offline > /sys/block/sdq/device/state echo offline > /sys/block/sdf/device/state dmsetup status mpath12 0 109051904 multipath 2 0 0 0 2 1 E 0 2 0 8:224 F 1 65:0 F 1 E 0 2 0 8:48 F 1 8:80 F 1 Feb 25 11:10:32 malta9 multipathd: sdd: rdac checker reports path is down Feb 25 11:10:32 malta9 multipathd: sdd: rdac checker reports path is down Feb 25 11:10:32 malta9 multipathd: sdo: rdac checker reports path is down Feb 25 11:10:32 malta9 multipathd: sdo: rdac checker reports path is down Feb 25 11:10:32 malta9 multipathd: sdq: rdac checker reports path is down Feb 25 11:10:32 malta9 multipathd: sdq: rdac checker reports path is down Feb 25 11:10:32 malta9 multipathd: dm-8: devmap already registered Feb 25 11:10:32 malta9 multipathd: dm-8: devmap already registered Feb 25 11:10:52 malta9 multipathd: sdf: rdac checker reports path is down Feb 25 11:10:52 malta9 multipathd: sdf: rdac checker reports path is down Feb 25 11:10:52 malta9 multipathd: dm-8: devmap already registered Feb 25 11:10:52 malta9 multipathd: dm-8: devmap already registered dmeventd is running root 4601 0.0 0.1 96272 69668 ? S<Lsl Feb24 0:00 [dmeventd] Also I have lvm.conf option ignore_suspended_devices = 1 that should prevent this right? > >> lvs -a -o +devices >> stills shows the lv has mirrored ( should switch to non-mirrored right?) >> , > > Yes, provided you successfully started the dmeventd monitoring thread > and it handled the failure event. > > Thanks, Malahal. > > _______________________________________________ > linux-lvm mailing list > linux-lvm@redhat.com > https://www.redhat.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > lvm.conf devices { dir = "/dev" scan = [ "/dev" ] preferred_names = [ ] filter = [ "r/disk/", "r/sd.*/", "a/.*/" ] cache_dir = "/etc/lvm/cache" cache_file_prefix = "" write_cache_state = 1 sysfs_scan = 1 md_component_detection = 1 md_chunk_alignment = 1 data_alignment = 0 ignore_suspended_devices = 1 } log { verbose = 1 syslog = 1 file = "/var/log/lvm2.log" overwrite = 0 level = 0 indent = 1 command_names = 1 prefix = " " } backup { backup = 1 backup_dir = "/etc/lvm/backup" archive = 1 archive_dir = "/etc/lvm/archive" retain_min = 10 retain_days = 30 } shell { history_size = 100 } global { library_dir = "/usr/lib64" umask = 077 test = 0 units = "h" activation = 1 proc = "/proc" locking_type = 1 fallback_to_clustered_locking = 1 fallback_to_local_locking = 1 locking_dir = "/var/lock/lvm" } activation { missing_stripe_filler = "error" reserved_stack = 256 reserved_memory = 8192 process_priority = -18 volume_list = [ "rootvg" , "@cluster.test" ] mirror_region_size = 512 readahead = "auto" mirror_log_fault_policy = "allocate" mirror_device_fault_policy = "remove" } dmeventd { mirror_library = "libdevmapper-event-lvm2mirror.so" snapshot_library = "libdevmapper-event-lvm2snapshot.so" } -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
