mirror of
https://github.com/ceph/ceph
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105 lines
2.5 KiB
Python
105 lines
2.5 KiB
Python
"""
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Osd backfill test
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"""
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import logging
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import time
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from tasks import ceph_manager
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from teuthology import misc as teuthology
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log = logging.getLogger(__name__)
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def rados_start(ctx, remote, cmd):
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"""
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Run a remote rados command (currently used to only write data)
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"""
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log.info("rados %s" % ' '.join(cmd))
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testdir = teuthology.get_testdir(ctx)
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pre = [
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'adjust-ulimits',
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'ceph-coverage',
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'{tdir}/archive/coverage'.format(tdir=testdir),
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'rados',
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];
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pre.extend(cmd)
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proc = remote.run(
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args=pre,
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wait=False,
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)
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return proc
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def task(ctx, config):
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"""
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Test backfill
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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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'thrashosds task only accepts a dict for configuration'
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first_mon = teuthology.get_first_mon(ctx, config)
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(mon,) = ctx.cluster.only(first_mon).remotes.keys()
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num_osds = teuthology.num_instances_of_type(ctx.cluster, 'osd')
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log.info('num_osds is %s' % num_osds)
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assert num_osds == 3
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manager = ceph_manager.CephManager(
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mon,
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ctx=ctx,
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logger=log.getChild('ceph_manager'),
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)
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while len(manager.get_osd_status()['up']) < 3:
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time.sleep(10)
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manager.flush_pg_stats([0, 1, 2])
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manager.wait_for_clean()
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# write some data
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p = rados_start(ctx, mon, ['-p', 'rbd', 'bench', '15', 'write', '-b', '4096',
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'--no-cleanup'])
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err = p.wait()
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log.info('err is %d' % err)
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# mark osd.0 out to trigger a rebalance/backfill
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manager.mark_out_osd(0)
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# also mark it down to it won't be included in pg_temps
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manager.kill_osd(0)
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manager.mark_down_osd(0)
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# wait for everything to peer and be happy...
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manager.flush_pg_stats([1, 2])
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manager.wait_for_recovery()
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# write some new data
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p = rados_start(ctx, mon, ['-p', 'rbd', 'bench', '30', 'write', '-b', '4096',
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'--no-cleanup'])
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time.sleep(15)
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# blackhole + restart osd.1
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# this triggers a divergent backfill target
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manager.blackhole_kill_osd(1)
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time.sleep(2)
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manager.revive_osd(1)
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# wait for our writes to complete + succeed
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err = p.wait()
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log.info('err is %d' % err)
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# wait for osd.1 and osd.2 to be up
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manager.wait_till_osd_is_up(1)
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manager.wait_till_osd_is_up(2)
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# cluster must recover
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manager.flush_pg_stats([1, 2])
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manager.wait_for_recovery()
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# re-add osd.0
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manager.revive_osd(0)
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manager.flush_pg_stats([1, 2])
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manager.wait_for_clean()
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