Hi Christian,
Have you tried to migrate the disk from the old storage (pool) to the
new one?
I think it should show the same problem, but I think it'd be a much
easier path to recover than the posix copy.
How full is your storage?
Maybe you can customize the crushmap, so that some OSDs are left in the
bad (default) pool, and other OSDs and set for the new pool. It think
(I'm yet learning ceph) that this will make different pgs for each pool,
also different OSDs, may be this way you can overcome the issue.
Cheers
Eneko
On 30/12/14 12:17, Christian Eichelmann wrote:
Hi Nico and all others who answered,
After some more trying to somehow get the pgs in a working state (I've
tried force_create_pg, which was putting then in creating state. But
that was obviously not true, since after rebooting one of the containing
osd's it went back to incomplete), I decided to save what can be saved.
I've created a new pool, created a new image there, mapped the old image
from the old pool and the new image from the new pool to a machine, to
copy data on posix level.
Unfortunately, formatting the image from the new pool hangs after some
time. So it seems that the new pool is suffering from the same problem
as the old pool. Which is totaly not understandable for me.
Right now, it seems like Ceph is giving me no options to either save
some of the still intact rbd volumes, or to create a new pool along the
old one to at least enable our clients to send data to ceph again.
To tell the truth, I guess that will result in the end of our ceph
project (running for already 9 Monthes).
Regards,
Christian
Am 29.12.2014 15:59, schrieb Nico Schottelius:
Hey Christian,
Christian Eichelmann [Mon, Dec 29, 2014 at 10:56:59AM +0100]:
[incomplete PG / RBD hanging, osd lost also not helping]
that is very interesting to hear, because we had a similar situation
with ceph 0.80.7 and had to re-create a pool, after I deleted 3 pg
directories to allow OSDs to start after the disk filled up completly.
So I am sorry not to being able to give you a good hint, but I am very
interested in seeing your problem solved, as it is a show stopper for
us, too. (*)
Cheers,
Nico
(*) We migrated from sheepdog to gluster to ceph and so far sheepdog
seems to run much smoother. The first one is however not supported
by opennebula directly, the second one not flexible enough to host
our heterogeneous infrastructure (mixed disk sizes/amounts) - so we
are using ceph at the moment.
--
Zuzendari Teknikoa / Director Técnico
Binovo IT Human Project, S.L.
Telf. 943575997
943493611
Astigarraga bidea 2, planta 6 dcha., ofi. 3-2; 20180 Oiartzun (Gipuzkoa)
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