Hello Achim,
good to hear someone else running this setup. We have changed the number
of backfills using
ceph tell osd.\* injectargs '--osd-max-backfills 1'
and it seems to work mostly in regards of issues when rebalancing.
One unsolved problem we have is machines kernel panic'ing, when i/o
Hi,
We have the same setup including OpenNebula 4.10.1. We had some
backfilling due to node failures and node expansion. If we throttle
osd_max_backfills there is not a problem at all. If the value for
backfilling jobs is too high, we can see delayed reactions within the
shell, eg. `ls -lh` needs
I think smaller clusters get chocked up with the default backfill. I've
seen latency on a four node cluster with 10 OSD each improve by setting
osd_max_backfills to 2. I would try lowering it and see if it helps.
Also, if you are running both cluster and VM traffic on the same network,
you could g
Hello,
another issue we have experienced with qemu VMs
(qemu 2.0.0) with ceph-0.80 on Ubuntu 14.04
managed by opennebula 4.10.1:
The VMs are completly frozen when rebalancing takes place,
they do not even respond to ping anymore.
Looking at the qemu processes they are in state "Sl".
Is this a