Hi,
We have production platform of Ceph in our farm of Openstack. This platform
have following specs:
1 Admin Node
3 Monitors
7 Ceph Nodes with 160 OSD of SAS HDD 1.2TB 10K. Maybe 30 OSD have Journal
SSD...we are in update progress...;-)
All network have 10GB Ethernet link and we have some problems now of slow and
block request...no problem we are diagnosing the platform.
One of our problems are the placement groups, this number has not been changed
by mistake for a long time...our pools:
GLOBAL:
SIZE AVAIL RAW USED %RAW USED OBJECTS
173T 56319G 118T 68.36 10945k
POOLS:
NAME ID CATEGORY USED %USED MAX AVAIL OBJECTS
DIRTY READ WRITE
rbd 0 - 0 0 14992G 0
0 1 66120
volumes 6 - 42281G 23.75 14992G 8871636
8663k 47690M 55474M
images 7 - 18151G 10.20 14992G 2324108
2269k 1456M 1622k
backups 8 - 0 0 14992G 1
1 18578 104k
vms 9 - 91575M 0.05 14992G 12827
12827 2526k 6863k
And our PG on pools are (only of used pools):
Volumes 2048
Images 1024
We think that our performance problem, after verify network, servers, hardware,
disk, software, bugs, logs, etc...is the number of PG volumes...
Our Question:
How we can update de pg number and after pgp number in production environment
without interrupting service, poor performance or down the virtual
instances...???
The last update was made from 512 to 1024 in the pool of pictures and had a
drop service 2 hours because the platform did not support data traffic....we
are scaried :-(
We can do this change with little increments in two weeks? How?
Thanks Thanks Thanks
_________________________________________________________________________
Emilio Moreno Fernández
@ emilio.mor...@adam.es<mailto:emilio.mor...@adam.es>
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