mirror of
https://github.com/ceph/ceph
synced 2024-12-24 20:33:27 +00:00
74 lines
2.6 KiB
Python
74 lines
2.6 KiB
Python
"""
|
|
Force pg creation on all osds
|
|
"""
|
|
from teuthology import misc as teuthology
|
|
from teuthology.orchestra import run
|
|
import logging
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
def task(ctx, config):
|
|
"""
|
|
Create the specified number of pools and write 16 objects to them (thereby forcing
|
|
the PG creation on each OSD). This task creates pools from all the clients,
|
|
in parallel. It is easy to add other daemon types which have the appropriate
|
|
permissions, but I don't think anything else does.
|
|
The config is just the number of pools to create. I recommend setting
|
|
"mon create pg interval" to a very low value in your ceph config to speed
|
|
this up.
|
|
|
|
You probably want to do this to look at memory consumption, and
|
|
maybe to test how performance changes with the number of PGs. For example:
|
|
|
|
tasks:
|
|
- ceph:
|
|
config:
|
|
mon:
|
|
mon create pg interval: 1
|
|
- manypools: 3000
|
|
- radosbench:
|
|
clients: [client.0]
|
|
time: 360
|
|
"""
|
|
|
|
log.info('creating {n} pools'.format(n=config))
|
|
|
|
poolnum = int(config)
|
|
creator_remotes = []
|
|
client_roles = teuthology.all_roles_of_type(ctx.cluster, 'client')
|
|
log.info('got client_roles={client_roles_}'.format(client_roles_=client_roles))
|
|
for role in client_roles:
|
|
log.info('role={role_}'.format(role_=role))
|
|
(creator_remote, ) = ctx.cluster.only('client.{id}'.format(id=role)).remotes.keys()
|
|
creator_remotes.append((creator_remote, 'client.{id}'.format(id=role)))
|
|
|
|
remaining_pools = poolnum
|
|
poolprocs=dict()
|
|
while (remaining_pools > 0):
|
|
log.info('{n} pools remaining to create'.format(n=remaining_pools))
|
|
for remote, role_ in creator_remotes:
|
|
poolnum = remaining_pools
|
|
remaining_pools -= 1
|
|
if remaining_pools < 0:
|
|
continue
|
|
log.info('creating pool{num} on {role}'.format(num=poolnum, role=role_))
|
|
proc = remote.run(
|
|
args=[
|
|
'ceph',
|
|
'--name', role_,
|
|
'osd', 'pool', 'create', 'pool{num}'.format(num=poolnum), '8',
|
|
run.Raw('&&'),
|
|
'rados',
|
|
'--name', role_,
|
|
'--pool', 'pool{num}'.format(num=poolnum),
|
|
'bench', '0', 'write', '-t', '16', '--block-size', '1'
|
|
],
|
|
wait = False
|
|
)
|
|
log.info('waiting for pool and object creates')
|
|
poolprocs[remote] = proc
|
|
|
|
run.wait(poolprocs.values())
|
|
|
|
log.info('created all {n} pools and wrote 16 objects to each'.format(n=poolnum))
|