[linux-lvm] mirrored LV + cmirror problem

[Michael Eisenkölbl]

how big are the LUNs?

michael

Lajkó Attila schrieb:
> Hello,
>
>
> I have a problem with clvmd an cmirror:
>
> We have a two nodes cluster (RHEL4.6). I created a mirrored LV on a 
> clustered volume group on 2 iscsi LUNS (VTrak M200i).
> When i disconnect one of the LUNs - simulating a storage problem -  
> the mirrored LV doesn't go to linear mode, the LVM commands (lvs, 
> lvconvert, etc.) get stuck and the GFS file system is not accessible 
> (on both nodes).
>
> What is see in /var/log/messages:
>
> Feb 15 12:29:26 el42 kernel: dm-cmirror: server_complete_resync_work - 
> Setting recovery_halted = 1
> Feb 15 12:29:26 el42 kernel: dm-cmirror: Log flush failure: -5 -EIO
> Feb 15 12:29:26 el42 last message repeated 4 times
> Feb 15 12:29:26 el42 kernel: dm-cmirror: Log flush failure: -5 -EIO
> Feb 15 12:29:26 el42 kernel: dm-cmirror: Recovery halted due to error 
> on ItlWCmkP
> Feb 15 12:29:26 el42 lvm[4929]: WARNING: dev_open(/dev/mapper/mirrp3) 
> called while suspended
> Feb 15 12:29:26 el42 kernel: dm-cmirror: LOG INFO:
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   uuid: 
> LVM-zEHPYfjtLCL7yqQhsG2kcPzthyLbyBPd7xlok1gd7NHgXR3l2XaVQWEVItlWCmkP
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   uuid_ref    : 1
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   log type    : disk
> Feb 15 12:29:26 el42 kernel: dm-cmirror:  ?region_count: 320
> Feb 15 12:29:26 el42 kernel: dm-cmirror:  ?sync_count  : 320
> Feb 15 12:29:26 el42 kernel: dm-cmirror:  ?sync_search : 320
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   in_sync     : YES
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   suspended   : NO
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   recovery_halted : YES
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   server_id   : 2
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   server_valid: YES
> Feb 15 12:29:26 el42 kernel: dm-cmirror: cluster_presuspend: recovery 
> halted on ItlWCmkP(1)
> Feb 15 12:29:26 el42 kernel: dm-cmirror: cluster_postsuspend
> Feb 15 12:29:26 el42 kernel: dm-cmirror: Telling everyone I'm 
> suspending (ItlWCmkP)
> Feb 15 12:29:26 el42 kernel: dm-cmirror: LRT_MASTER_LEAVING(13): 
> (ItlWCmkP)
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   starter     : 2
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   co-ordinator: 0
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   node_count  : 0
> Feb 15 12:29:26 el42 kernel: dm-cmirror: LRT_MASTER_LEAVING(13): 
> (ItlWCmkP)
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   starter     : 2
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   co-ordinator: 0
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   node_count  : 2
> Feb 15 12:29:26 el42 kernel: dm-cmirror: LRT_ELECTION(10): (ItlWCmkP)
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   starter     : 2
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   co-ordinator: 57005
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   node_count  : 0
> Feb 15 12:29:26 el42 kernel: dm-cmirror: LRT_ELECTION(10): (ItlWCmkP)
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   starter     : 2
> Feb 15 12:29:26 el42 lvm[4929]: WARNING: dev_open(/etc/lvm/lvm.conf) 
> called while suspended
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   co-ordinator: 1
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   node_count  : 2
> Feb 15 12:29:26 el42 kernel: dm-cmirror: LRT_SELECTION(11): (ItlWCmkP)
> Feb 15 12:29:26 el42 kernel: dm-cmirror:   starter     : 2
> Feb 15 12:29:27 el42 kernel: dm-cmirror:   co-ordinator: 1
> Feb 15 12:29:27 el42 kernel: dm-cmirror:   node_count  : 2
> Feb 15 12:29:27 el42 kernel: dm-cmirror: LRT_MASTER_ASSIGN(12): 
> (ItlWCmkP)
> Feb 15 12:29:27 el42 kernel: dm-cmirror:   starter     : 2
> Feb 15 12:29:27 el42 kernel: dm-cmirror:   co-ordinator: 1
> Feb 15 12:29:27 el42 lvm[4929]: Failed to remove faulty devices in 
> vgtest-lvtest
> Feb 15 12:29:27 el42 kernel: dm-cmirror:   node_count  : 1
> Feb 15 12:29:27 el42 kernel: dm-cmirror: Suspending now (ItlWCmkP)
> Feb 15 12:29:28 el42 lvm[4929]: No longer monitoring mirror device 
> vgtest-lvtest for events
>
> Regards,
> Attila Lajkó
>
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