mirror of
https://github.com/ceph/ceph
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ab1b78ae00
The helper gets a sequence number from the osd (or osds), and then polls the mon until that seq is reflected there. This is overkill in some cases, since many tests only require that the stats be reflected on the mgr (not the mon), but waiting for it to also reach the mon is sufficient! Signed-off-by: Sage Weil <sage@redhat.com>
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 ceph_manager
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import time
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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.iterkeys()
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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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