Re: Backfilling caused RBD corruption on Hammer?

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On Sun, May 8, 2016 at 11:57 PM, Robert Sander
<r.sander@xxxxxxxxxxxxxxxxxxx> wrote:
> Am 29.04.2016 um 17:11 schrieb Robert Sander:
>
>> As the backfilling with the full weight of the new OSDs would have run
>> for more than 28h and no VM was usable we re-weighted the new OSDs to
>> 0.1. The backfilling finished after about 2h and we planned to increase
>> the weight slowly when suddenly the RBD was corrupted.
>
> After going through the logfiles I may have found the culprit.
>
> Is it possible to lose data if "ceph osd crush add" is called on the
> same OSD multiple times?

Whoa, that would sound like some seriously bad behavior. Any more
insights on this? Can you confirm that this was indeed the root cause?

Cheers,
Florian
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