[Ocfs2-users] Problem with multipath and ocfs2

[Heiko L.]

Hallo


Ich have a Problem with multipath and ocfs2.

Im running 2 ocfs-nodes with 4 disks connected on FC.
After reboot node2 cannot access any disk.

multipath show all disks.
fdisk -l hang on "Disk /dev/dm-6"
fdisk show: "Disk identifier: 0x02020202" for all SAN-disk
On node1 running all disks successfull.


howto diag this problem?


regards Heiko


details

- dis fstab:san
- dis service ocfs2



root at else2:~# multipath -ll
mpath2 (3600601605b502e008ce8bab5d25de311) dm-1 DGC,RAID 5
size=400G features='1 queue_if_no_path' hwhandler='1 emc' wp=rw
|-+- policy='round-robin 0' prio=2 status=active
| |- 2:0:0:1 sdg 8:96  active ready  running
| `- 1:0:1:1 sdk 8:160 active ready  running
`-+- policy='round-robin 0' prio=0 status=enabled
  |- 1:0:0:1 sdc 8:32  active ready  running
  `- 2:0:1:1 sdo 8:224 active ready  running
mpath0 (3600601605b502e00f48ded703c86e211) dm-0 DGC,RAID 5
size=500G features='1 queue_if_no_path' hwhandler='1 emc' wp=rw
|-+- policy='round-robin 0' prio=2 status=active
| |- 2:0:0:0 sdf 8:80  active ready  running
| `- 1:0:1:0 sdj 8:144 active ready  running
`-+- policy='round-robin 0' prio=0 status=enabled
  |- 1:0:0:0 sdb 8:16  active ready  running
  `- 2:0:1:0 sdn 8:208 active ready  running
mpath5 (3600601605b502e00fc4857d9d496e511) dm-3 DGC,RAID 5
size=510G features='1 queue_if_no_path' hwhandler='1 emc' wp=rw
|-+- policy='round-robin 0' prio=2 status=active
| |- 2:0:0:2 sdh 8:112 active ready  running
| `- 1:0:1:2 sdl 8:176 active ready  running
`-+- policy='round-robin 0' prio=0 status=enabled
  |- 1:0:0:2 sdd 8:48  active ready  running
  `- 2:0:1:2 sdp 8:240 active ready  running
mpath3 (3600601605b502e00e0a9d366eff2e311) dm-2 DGC,RAID 5
size=510G features='1 queue_if_no_path' hwhandler='1 emc' wp=rw
|-+- policy='round-robin 0' prio=2 status=active
| |- 2:0:0:2 sdh 8:112 active ready  running
| `- 1:0:1:2 sdl 8:176 active ready  running
`-+- policy='round-robin 0' prio=0 status=enabled
  |- 1:0:0:2 sdd 8:48  active ready  running
  `- 2:0:1:2 sdp 8:240 active ready  running





# fdisk -l
...
255 heads, 63 sectors/track, 66576 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x6e577425

     Device Boot      Start         End      Blocks   Id  System
/dev/dm-3p1               1      100517   807402771   83  Linux

Disk /dev/dm-4: 536.9 GB, 536863993344 bytes
255 heads, 63 sectors/track, 65269 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x02020202

Disk /dev/dm-4 doesn't contain a valid partition table

Disk /dev/dm-5: 429.5 GB, 429490171904 bytes
255 heads, 63 sectors/track, 52215 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
(I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x02020202

Disk /dev/dm-5 doesn't contain a valid partition table


Disk /dev/dm-6: 547.6 GB, 547606209024 bytes
255 heads, 63 sectors/track, 66575 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x02020202

Disk /dev/dm-6 doesn't contain a valid partition table

  ...hang...

# more /etc/multipath.conf
...
multipaths {
       multipath {
        wwid  3600601605b502e00f48ded703c86e211
        alias mp0s6l31p1
       }
       multipath {
        wwid  3600601605b502e008ce8bab5d25de311
        alias mp1s6l93
       }
       multipath {
        wwid 3600601605b502e00e0a9d366eff2e311
        alias mp2s6l42
       }
       multipath {
        wwid 3600601605b502e00fc4857d9d496e511
        alias mp3s6l34
       }
}

# grep s6  /etc/blkid.tab
<device DEVNO="0x0861" TIME="1468871377" LABEL="s6r0l93p1" UUID="672e479c-8fdc-4c69-8d24-bb7fa6319463"
TYPE="ocfs2">/dev/sdg1</device>
<device DEVNO="0x0851" TIME="1468871377" LABEL="s6r3l31p1" UUID="7742c8e0-a792-4cfc-9d5b-02aa4ea1798b"
TYPE="ocfs2">/dev/sdf1</device>
<device DEVNO="0x0871" TIME="1468871377" LABEL="s6l42p1" UUID="d451ac65-7b3a-45c2-9dd1-bf01ce21e9f1"
TYPE="ocfs2">/dev/sdh1</device>
<device DEVNO="0x0881" TIME="1468871377" LABEL="s6r3l34p1" UUID="47b2fd91-0e6f-4492-a30a-8726db8cea33"
TYPE="ocfs2">/dev/sdi1</device>
<device DEVNO="0xfe05" TIME="1468871377" PRI="45" LABEL="s6r0l93p1" UUID="672e479c-8fdc-4c69-8d24-bb7fa6319463"
TYPE="ocfs2">/dev/mapper/mpath2-part1</device>
<device DEVNO="0xfe06" TIME="1468871377" PRI="45" LABEL="s6r3l34p1" UUID="47b2fd91-0e6f-4492-a30a-8726db8cea33"
TYPE="ocfs2">/dev/mapper/mpath5-part1</device>
<device DEVNO="0xfe04" TIME="1468871377" PRI="45" LABEL="s6r3l31p1" UUID="7742c8e0-a792-4cfc-9d5b-02aa4ea1798b"
TYPE="ocfs2">/dev/mapper/mpath0-part1</device>
<device DEVNO="0xfe07" TIME="1468871377" PRI="45" LABEL="s6l42p1" UUID="d451ac65-7b3a-45c2-9dd1-bf01ce21e9f1"
TYPE="ocfs2">/dev/mapper/mpath4-part1</device>
<device DEVNO="0x0841" TIME="1468871377" LABEL="s6r3l31p1" UUID="7742c8e0-a792-4cfc-9d5b-02aa4ea1798b"
TYPE="ocfs2">/dev/sde1</device>
<device DEVNO="0x08c1" TIME="1468871377" LABEL="s6r0l93p1" UUID="672e479c-8fdc-4c69-8d24-bb7fa6319463"
TYPE="ocfs2">/dev/sdm1</device>
<device DEVNO="0x4121" TIME="1468871377" LABEL="s6l42p1" UUID="d451ac65-7b3a-45c2-9dd1-bf01ce21e9f1"
TYPE="ocfs2">/dev/sds1</device>
<device DEVNO="0x4131" TIME="1468871377" LABEL="s6r3l34p1" UUID="47b2fd91-0e6f-4492-a30a-8726db8cea33"
TYPE="ocfs2">/dev/sdt1</device>