Hi Bart,

On 13/03/2018 16:10, Bart Van Assche wrote:
> On Tue, 2018-03-13 at 11:30 +0200, Jaco Kroon wrote:
>> On 11/03/2018 07:00, Bart Van Assche wrote:
>>> Did I see correctly that /dev/sdm is behind a MPT SAS controller? You may
>>> want to contact the authors of this driver and Cc the linux-scsi mailing
>>> list. Sorry but I'm not familiar with the mpt3sas driver myself.
>> You did see correctly, all drives are behind the MPT SAS.  If there is
>> in fact a problem with the driver (or the controller itself for that
>> matter) it would explain things.  It would also explain why we don't see
>> this problem on other hosts.
> You may want to have a look at the following report, something I ran into
> myself yesterday: https://marc.info/?l=linux-scsi&m=152087904024146.
I quickly checked my dmesg logs and I'm not seeing that particular
message, could be that newer kernels only started warning about it?

I'm not seeing any references to the
scsih_get_enclosure_logicalid_chassis_slot() function in the code here,
so there is obviously a newer driver in newer kernels.  The scsih_get_*
calls I do see is in mpt3sas_scsih.c and I'm not seeing (direct) calls
to _config_request at all.  At least it seems there is activity on the
driver, which is always a good sign that someone is attending to problems.

I'll queue an upgrade to 4.16 so long for when it's released in a couple
of days/weeks.

Kind Regards,
Jaco

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