On 17-11-07 12:02 AM, Jan Pekař - Imatic wrote:
Hi,
I'm using debian stretch with ceph 12.2.1-1~bpo80+1 and qemu
1:2.8+dfsg-6+deb9u3
I'm running 3 nodes with 3 monitors and 8 osds on my nodes, all on IPV6.
When I tested the cluster, I detected strange and severe problem.
On first node I'm running qemu hosts with librados disk connection to the
cluster and all 3 monitors mentioned in connection.
On second node I stopped mon and osd with command
kill -STOP MONPID OSDPID
Within one minute all my qemu hosts on first node freeze, so they even don't
respond to ping. [..]
Why would you want to *stop* (as in, freeze) a process instead of killing it?
Anyway, with processes still there, it may take a few minutes before cluster
realizes that daemons are stopped and kicks it out of cluster, restoring
normal behavior (assuming correctly set crush rules).
--
Piotr Dałek
piotr.da...@corp.ovh.com
https://www.ovh.com/us/
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