[linux-lvm] mirrored LV + cmirror problem

[Lajkó Attila]

The VTrak LUNs are 1 and 5GB. The PVs are on a 240 MB partition on  
each luns , the LV size is 160 MB. It's just a test.

Attila.

On Feb 15, 2008, at 1:02 PM, Michael Eisenkölbl wrote:

> 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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>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
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