In fact, one object (only one) seem to be blocked on the cache tier
(writeback).
I tried to flush the cache with "rados -p cache-bkp-foo cache-flush-
evict-all", but it blocks on the object
"rbd_data.f66c92ae8944a.00000000000f2596".
So I reduced (a lot) the cache tier to 200MB, "rados -p cache-bkp-foo
ls" now show only 3 objects :
rbd_directory
rbd_data.f66c92ae8944a.00000000000f2596
rbd_header.f66c92ae8944a
And "cache-flush-evict-all" still hangs.
I also switched the cache tier to "readproxy", to avoid using this
cache. But, it's still blocked.
Le vendredi 21 septembre 2018 à 02:14 +0200, Olivier Bonvalet a écrit :
> Hello,
>
> on a Luminous cluster, I have a PG incomplete and I can't find how to
> fix that.
>
> It's an EC pool (4+2) :
>
> pg 37.9c is incomplete, acting [32,50,59,1,0,75] (reducing pool
> bkp-sb-raid6 min_size from 4 may help; search ceph.com/docs for
> 'incomplete')
>
> Of course, we can't reduce min_size from 4.
>
> And the full state : https://pastebin.com/zrwu5X0w
>
> So, IO are blocked, we can't access thoses damaged data.
> OSD blocks too :
> osds 32,68,69 have stuck requests > 4194.3 sec
>
> OSD 32 is the primary of this PG.
> And OSD 68 and 69 are for cache tiering.
>
> Any idea how can I fix that ?
>
> Thanks,
>
> Olivier
>
>
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>
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