mirror of
https://github.com/ceph/ceph
synced 2024-12-25 21:03:31 +00:00
57 lines
1.6 KiB
Python
57 lines
1.6 KiB
Python
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"""
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Prepare MDS cluster for upgrade.
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"""
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import logging
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import time
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from tasks.cephfs.filesystem import Filesystem
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log = logging.getLogger(__name__)
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def task(ctx, config):
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"""
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Prepare MDS cluster for upgrade.
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This task reduces ranks to 1 and stops all standbys.
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"""
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if config is None:
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config = {}
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assert isinstance(config, dict), \
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'snap-upgrade task only accepts a dict for configuration'
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fs = Filesystem(ctx)
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status = fs.getinfo()
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fs.set_max_mds(1)
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status = fs.getinfo()
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targets = filter(lambda r: r['rank'] >= 1, fs.get_ranks(status=status))
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if len(targets) > 0:
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# deactivate mds in decending order
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targets = sorted(targets, key=lambda r: r['rank'], reverse=True)
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for target in targets:
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self.log("deactivating rank %d" % target['rank'])
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self.fs.deactivate(target['rank'])
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status = self.wait_for_stable()[0]
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else:
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status = self.wait_for_stable()[0]
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assert(fs.get_mds_map(status=status)['max_mds'] == 1)
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assert(fs.get_mds_map(status=status)['in'] == [0])
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# Stop standbys now to minimize time rank 0 is down in subsequent:
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# tasks:
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# - ceph.stop: [mds.*]
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rank0 = fs.get_rank(rank=0, status=status)
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for daemon in ctx.daemons.iter_daemons_of_role('mds', fs.mon_manager.cluster):
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if rank0['name'] != daemon.id_:
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daemon.stop()
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for i in range(1, 10):
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time.sleep(5) # time for FSMap to update
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status = fs.getinfo()
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if len(list(status.get_standbys())) == 0:
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break
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assert(len(list(status.get_standbys())) == 0)
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