[ovirt-users] High latency on storage domains and sanlock renewal error

[Yaniv Kaul]

On Mon, May 8, 2017 at 11:50 AM, Stefano Bovina <bovy89 at gmail.com> wrote:

> Yes,
> this configuration is the one suggested by EMC for EL7.
>

https://access.redhat.com/solutions/139193 suggest that for alua, the patch
checker needs to be different.

Anyway, it is very likely that you have storage issues - they need to be
resolved first and I believe they have little to do with oVirt at the
moment.
Y.


>
> By the way,
> "The parameters rr_min_io vs. rr_min_io_rq mean the same thing but are
> used for device-mapper-multipath on differing kernel versions." and
> rr_min_io_rq default value is 1, rr_min_io default value is 1000, so it
> should be fine.
>
>
> 2017-05-08 9:39 GMT+02:00 Yaniv Kaul <ykaul at redhat.com>:
>
>>
>> On Sun, May 7, 2017 at 1:27 PM, Stefano Bovina <bovy89 at gmail.com> wrote:
>>
>>> Sense data are 0x0/0x0/0x0
>>
>>
>> Interesting - first time I'm seeing 0/0/0. The 1st is usually 0x2 (see
>> [1]), and then the rest [2], [3] make sense.
>>
>> A google search found another user with Clarion with the exact same
>> error[4], so I'm leaning toward misconfiguration of multipathing/clarion
>> here.
>>
>> Is your multipathing configuration working well for you?
>> Are you sure it's a EL7 configuration? For example, I believe you should
>> have rr_min_io_rq and not rr_min_io .
>> Y.
>>
>> [1] http://www.t10.org/lists/2status.htm
>> [2] http://www.t10.org/lists/2sensekey.htm
>> [3] http://www.t10.org/lists/asc-num.htm
>> [4] http://www.linuxquestions.org/questions/centos-111/multi
>> path-problems-4175544908/
>>
>
>
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