On Tue, Jul 5, 2016 at 8:55 PM, Adam Goryachev
<mailinglists@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> On 06/07/16 10:13, o1bigtenor wrote:
>>
>> Greetings
>>
>> Running a Raid 10 array with 4 - 3 TB drives. Have a UPS but this area
>> gets significant lightning and also brownout (rural power) events.
>>
snip
>>
>> Do I just re-create the array?
>>
> No, not if you value your data. Only re-create the array if you are told to
> by someone (knowledgeable) on the list.
>
> In your case, I think you should stop the array.
> mdadm --stop /dev/md0
> Make sure there is nothing listed in /proc/mdstat
> Then try to assemble the array, but force the events to match:
> mdadm --assemble /dev/md0 --force /dev/sd[bcef]1
>
> If that doesn't work, then include the output from dmesg as well as
> /proc/mdstat and any commandline output generated.
>
> You might also want to examine why two drives dropped, referring to logs or
> similar might assist.
>
mdadm --stop /dev/md0
cat /proc/mdstat
indicated no md (can't remember the exact response but it said
nothing there)
mdadm --assemble /dev/md0 --force /dev/sd[bcef]1 to
mdadm :forcing event count in /dev/sde1(2) from 64841 to 64844
mdadm :forcing event count in /dev/sdf1(3) from 64841 to 64844
mdadm: clearing FAULTY flag for device 3 in /dev/md0 for /dev/sdf1
mdadm: Marking array /dev/md0 as 'clean'
mdadm: /dev/md0 has been started with 4 drives
So my array is back up - - - thank you very much for your assistance!!!
What does the 'clearing FAULTY flag . . ' mean?
Regards
Dee
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