[CentOS] C7, mdadm issues

[Alessandro Baggi]

Il 29/01/19 18:47, mark ha scritto:
> Alessandro Baggi wrote:
>> Il 29/01/19 15:03, mark ha scritto:
>>
>>> I've no idea what happened, but the box I was working on last week has
>>> a *second* bad drive. Actually, I'm starting to wonder about that
>>> particulare hot-swap bay.
>>>
>>> Anyway, mdadm --detail shows /dev/sdb1 remove. I've added /dev/sdi1...
>>> but see both /dev/sdh1 and /dev/sdi1 as spare, and have yet to find a
>>> reliable way to make either one active.
>>>
>>> Actually, I would have expected the linux RAID to replace a failed one
>>> with a spare....
>>>
>>> Clues for the poor? I *really* don't want to freak out the user by
>>> taking it down, and building yet another array.
>>>
>>> mark
>>>
>>> _______________________________________________
>>> CentOS mailing list
>>> CentOS at centos.org
>>> https://lists.centos.org/mailman/listinfo/centos
>>>
>>>
>> Hi Mark,
>> can you report your raid configuration like raid level and raid
>> devices and the current status from /proc/mdstat?
>>
> Well, nope. I got to the point of rebooting the system (xfs had the RAID
> volume, and wouldn't let go; I also commented out the RAID volume.
> 
> It's RAID 5, /dev/sdb *also* appears to have died. If I do
> mdadm --assemble --force -v /dev/md0  /dev/sd[cefgdh]1
> mdadm: looking for devices for /dev/md0
> mdadm: /dev/sdc1 is identified as a member of /dev/md0, slot 0.
> mdadm: /dev/sdd1 is identified as a member of /dev/md0, slot -1.
> mdadm: /dev/sde1 is identified as a member of /dev/md0, slot 2.
> mdadm: /dev/sdf1 is identified as a member of /dev/md0, slot 3.
> mdadm: /dev/sdg1 is identified as a member of /dev/md0, slot 4.
> mdadm: /dev/sdh1 is identified as a member of /dev/md0, slot -1.
> mdadm: no uptodate device for slot 1 of /dev/md0
> mdadm: added /dev/sde1 to /dev/md0 as 2
> mdadm: added /dev/sdf1 to /dev/md0 as 3
> mdadm: added /dev/sdg1 to /dev/md0 as 4
> mdadm: no uptodate device for slot 5 of /dev/md0
> mdadm: added /dev/sdd1 to /dev/md0 as -1
> mdadm: added /dev/sdh1 to /dev/md0 as -1
> mdadm: added /dev/sdc1 to /dev/md0 as 0
> mdadm: /dev/md0 assembled from 4 drives and 2 spares - not enough to start
> the array.
> 
> --examine shows me /dev/sdd1 and /dev/sdh1, but that both are spares.
> 
>        mark
> 
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> 

Hi Mark,
please post the result from

cat /sys/block/md0/md/sync_action