Sorry. Miss a test file. Vincent Chen EMC2 | E-Lab Linux team
-----Original Message----- From: Chen, Vincent Sent: Thursday, April 26, 2012 12:56 PM To: 'Bug 985741' Subject: RE: [Bug 985741] Re: multipath can't show device on which is setup lvm Hi David 1)What do mean storage module in the initrd, is it HBA driver module? 2)I have upgrade to 12.04 LTS this morning, don't see same behavior. Please see the unbutu_12.04_multipath.txt 3)see multipath configure in attachment 4)As you request, attach test result before and after creation of LVM And also reboot host. Vincent Chen EMC2 | E-Lab Linux team -----Original Message----- From: boun...@canonical.com [mailto:boun...@canonical.com] On Behalf Of David Duffey Sent: Thursday, April 26, 2012 8:47 AM To: Chen, Vincent Subject: [Bug 985741] Re: multipath can't show device on which is setup lvm Hi Vencent, Here are some things you can try that might help narrow the problem: * Re-create the init ramdisk, make sure your storage module is in the initrd (what modules are in the initrd, vs what modules are loaded after boot and everything is working) * Can you test this on 12.04 LTS (released April 26th) to see if it has the same behaviour? * Show the output of multipathd -k"show config" * Give the output of the following commands before creating the lv, after, and after reboot * dmsetup ls --tree * dmsetup table I suspect this can be fixed in the initrd. David -- You received this bug notification because you are subscribed to the bug report. https://bugs.launchpad.net/bugs/985741 Title: multipath can't show device on which is setup lvm Status in “multipath-tools” package in Ubuntu: Confirmed Bug description: root@SGELLIN119:~# lsb_release -rd Description: Ubuntu 11.10 Release: 11.10 affect package: multipath-tools, lvm2 If creating logical volume with Multipath on disk primary partition 1, multipath can’t find the disks. Syslog show such error when booting system kernel: [ 27.604034] device-mapper: table: 252:5: multipath: error getting device kernel: [ 27.604115] device-mapper: ioctl: error adding target to table I use fdisk to create two partitions on one physical lun. Mpath6: /dev/mapper/mpath6-part1 /dev/mapper/mpath6-part2 Mpath7: /dev/mapper/mpath7-part1 /dev/mapper/mpath7-part2 create a logical volume on mpath6-part2, mpath7-part2 Reboot host, there is no exception and error logs. Multipath could Find all devices. root@SGELLIN119:~# multipath -ll | grep SYMM mpath9 (360000970000192602316533030453335) dm-10 EMC,SYMMETRIX mpath8 (360000970000192602316533030453334) dm-6 EMC,SYMMETRIX mpath7 (360000970000192602316533030453333) dm-7 EMC,SYMMETRIX mpath6 (360000970000192602316533030453332) dm-4 EMC,SYMMETRIX mpath5 (360000970000192602316533030453331) dm-3 EMC,SYMMETRIX root@SGELLIN119:~# lvs -v Finding all logical volumes LV VG #Seg Attr LSize Maj Min KMaj KMin Origin Snap% Move Copy% Log Convert LV UUID mlv my_vg 1 -wi-a- 1020.00m -1 -1 252 22 c3cECW-CJry-OdXI-O9bZ-lXq8-BUYq-obzcvB sym_lv2 sym_vg2 2 -wi-a- 200.00m -1 -1 252 20 1t9SZa-QEEm-2u6p-lCqN-aqcd-xOpn-dC1YAu sym_lv3 sym_vg3 2 -wi-a- 200.00m -1 -1 252 21 w4H00r-l71s-UURm-C32C-wDuS-fEF2-wlJFI0 Then I use same way to create a lv on mpath6-part1 and mpath7-part1 After rebooting host, there are some error logs happen. Multipath can’t find mpath6 and mapth7. Of course the logical volums on Mpath6 and mpath7 were lost also. root@SGELLIN119:~# multipath -ll| grep SYMM mpath9 (360000970000192602316533030453335) dm-3 EMC,SYMMETRIX mpath8 (360000970000192602316533030453334) dm-2 EMC,SYMMETRIX mpath5 (360000970000192602316533030453331) dm-5 EMC,SYMMETRIX root@SGELLIN119:~# lvs -v Finding all logical volumes LV VG #Seg Attr LSize Maj Min KMaj KMin Origin Snap% Move Copy% Log Convert LV UUID mlv my_vg 1 -wi-a- 1020.00m -1 -1 252 1 c3cECW-CJry-OdXI-O9bZ-lXq8-BUYq-obzcvB the finding is that if creating lvm on disk primary partition 1. Something were changed and it lead multipath couldn’t find devices. root@SGELLIN119:~# udevadm info --query=all --name=/dev/mapper/mpath6 P: /devices/virtual/block/dm-8 N: dm-8 L: -100 S: mapper/mpath6 S: disk/by-id/dm-name-mpath6 S: disk/by-id/dm-uuid-mpath-360000970000192602316533030453332 E: UDEV_LOG=3 E: DEVPATH=/devices/virtual/block/dm-8 E: MAJOR=252 E: MINOR=8 E: DEVNAME=/dev/dm-8 E: DEVTYPE=disk E: SUBSYSTEM=block E: DM_NAME=mpath6 E: DM_UUID=mpath-360000970000192602316533030453332 E: DM_SUSPENDED=0 E: DM_UDEV_RULES=1 E: DEVLINKS=/dev/mapper/mpath6 /dev/disk/by-id/dm-name-mpath6 /dev/disk/by-id/dm-uuid-mpath-360000970000192602316533030453332 Value "L" is negative compare to normal one Here is an temporary recovery way: 4) Service multipath-tools stop 5) Dmsetup remove_all 6) Service multipath-tools start However, the issue is consistent after I reboot OS. If I remove lv ( still have LVM package in OS) , multipath work well. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/985741/+subscriptions ** Attachment added: "test_before_after_lvm_reboot.txt" https://bugs.launchpad.net/bugs/985741/+attachment/3104392/+files/test_before_after_lvm_reboot.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/985741 Title: multipath can't show device on which is setup lvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/985741/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
