[ClusterLabs] Antw: Re: Antw: Re: lvm on shared storage and a lot of...

[Ulrich Windl]

>>> lejeczek <peljasz at yahoo.co.uk> schrieb am 19.04.2017 um 18:51 in Nachricht
<b7d51b47-cf30-2494-c62c-375922dd1f55 at yahoo.co.uk>:

> 
> On 18/04/17 15:22, Ulrich Windl wrote:
>>>>> lejeczek <peljasz at yahoo.co.uk> schrieb am 18.04.2017 um 16:14 in Nachricht
>> <bc95febd-8269-f2f7-30a7-8729b44b0f01 at yahoo.co.uk>:
>>
>>> On 18/04/17 14:45, Digimer wrote:
>>>> On 18/04/17 07:31 AM, lejeczek wrote:
>>>>> .. device_block & device_unblock in dmesg.
>>>>>
>>>>> and I see that the LVM resource would fail.
>>>>> This to me seems to happen randomly, or I fail to spot a pattern.
>>>>>
>>>>> Shared storage is a sas3 enclosure.
>>>>> I believe I follow docs on LVM to the letter. I don't know what could be
>>>>> the problem.
>>>>>
>>>>> would you suggest ways to troubleshoot it? Is it faulty/failing hardware?
>>>>>
>>>>> many thanks,
>>>>> L.
>>>> LVM or clustered LVM?
>>>>
>>> no clvmd
>>> And inasmuch as the resource would start, fs would mount, if
>>> I start using it more intensely I'd get more of
>>> block/unblock and after a while mountpoint resource failes
>>> and then LVM resource too.
>>> It gets only worse after, even after I deleted resourced, I
>>> begin to see, eg.:
>>>
>>> [ 6242.606870] sd 7:0:32:0: device_unblock and setting to
>>> running, handle(0x002c)
>>> [ 6334.248617] sd 7:0:18:0: [sdy] tag#0 FAILED Result:
>>> hostbyte=DID_OK driverbyte=DRIVER_SENSE
>>> [ 6334.248633] sd 7:0:18:0: [sdy] tag#0 Sense Key : Not
>>> Ready [current]
>>> [ 6334.248640] sd 7:0:18:0: [sdy] tag#0 Add. Sense: Logical
>>> unit is in process of becoming ready
>>> [ 6334.248647] sd 7:0:18:0: [sdy] tag#0 CDB: Read(10) 28 00
>>> 00 00 00 00 00 00 08 00
>>> [ 6334.248652] blk_update_request: I/O error, dev sdy, sector 0
>> Silly question: Do you have a multi-initiator setup where both initiators 
> use the same ID? Do your initiators have the highest prioriy (over the 
> targets)?
>>
>> Regards,
>> Ulrich
>>
> no, I am not using iscsi here, it'a a DAS via sas3.

Isn't SAS also using the SCSI protocol? Initiator and target are SCSI terms, not iSCSI terms.


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