mirror of
https://github.com/ceph/ceph
synced 2024-12-21 02:42:48 +00:00
44 lines
1.0 KiB
Python
44 lines
1.0 KiB
Python
"""
|
|
Prepare MDS cluster for upgrade.
|
|
"""
|
|
|
|
import logging
|
|
import time
|
|
|
|
from tasks.cephfs.filesystem import Filesystem
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
def task(ctx, config):
|
|
"""
|
|
Prepare MDS cluster for upgrade.
|
|
|
|
This task reduces ranks to 1 and stops all standbys.
|
|
"""
|
|
|
|
if config is None:
|
|
config = {}
|
|
assert isinstance(config, dict), \
|
|
'snap-upgrade task only accepts a dict for configuration'
|
|
|
|
fs = Filesystem(ctx)
|
|
status = fs.getinfo()
|
|
|
|
fs.set_max_mds(1)
|
|
fs.reach_max_mds()
|
|
|
|
# Stop standbys now to minimize time rank 0 is down in subsequent:
|
|
# tasks:
|
|
# - ceph.stop: [mds.*]
|
|
rank0 = fs.get_rank(rank=0, status=status)
|
|
for daemon in ctx.daemons.iter_daemons_of_role('mds', fs.mon_manager.cluster):
|
|
if rank0['name'] != daemon.id_:
|
|
daemon.stop()
|
|
|
|
for i in range(1, 10):
|
|
time.sleep(5) # time for FSMap to update
|
|
status = fs.getinfo()
|
|
if len(list(status.get_standbys())) == 0:
|
|
break
|
|
assert(len(list(status.get_standbys())) == 0)
|