mirror of
https://github.com/ceph/ceph
synced 2024-12-27 14:03:25 +00:00
694827bc0c
Added ability to implement scrubbing while thrashing (scrub_interval in config can be set to an interval similar to how clean_interval is set). Defaults to 0, which indicates that no scrubbing will take place. Add scrub_interval description to thrashosds docstring. Fixes: 7199 Signed-off-by: Warren Usui <warren.usui@inktank.com>
180 lines
6.7 KiB
Python
180 lines
6.7 KiB
Python
"""
|
|
Thrash -- Simulate random osd failures.
|
|
"""
|
|
import contextlib
|
|
import logging
|
|
import ceph_manager
|
|
from teuthology import misc as teuthology
|
|
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
@contextlib.contextmanager
|
|
def task(ctx, config):
|
|
"""
|
|
"Thrash" the OSDs by randomly marking them out/down (and then back
|
|
in) until the task is ended. This loops, and every op_delay
|
|
seconds it randomly chooses to add or remove an OSD (even odds)
|
|
unless there are fewer than min_out OSDs out of the cluster, or
|
|
more than min_in OSDs in the cluster.
|
|
|
|
All commands are run on mon0 and it stops when __exit__ is called.
|
|
|
|
The config is optional, and is a dict containing some or all of:
|
|
|
|
min_in: (default 3) the minimum number of OSDs to keep in the
|
|
cluster
|
|
|
|
min_out: (default 0) the minimum number of OSDs to keep out of the
|
|
cluster
|
|
|
|
op_delay: (5) the length of time to sleep between changing an
|
|
OSD's status
|
|
|
|
min_dead: (0) minimum number of osds to leave down/dead.
|
|
|
|
max_dead: (0) maximum number of osds to leave down/dead before waiting
|
|
for clean. This should probably be num_replicas - 1.
|
|
|
|
clean_interval: (60) the approximate length of time to loop before
|
|
waiting until the cluster goes clean. (In reality this is used
|
|
to probabilistically choose when to wait, and the method used
|
|
makes it closer to -- but not identical to -- the half-life.)
|
|
|
|
scrub_interval: (-1) the approximate length of time to loop before
|
|
waiting until a scrub is performed while cleaning. (In reality
|
|
this is used to probabilistically choose when to wait, and it
|
|
only applies to the cases where cleaning is being performed).
|
|
-1 is used to indicate that no scrubbing will be done.
|
|
|
|
chance_down: (0.4) the probability that the thrasher will mark an
|
|
OSD down rather than marking it out. (The thrasher will not
|
|
consider that OSD out of the cluster, since presently an OSD
|
|
wrongly marked down will mark itself back up again.) This value
|
|
can be either an integer (eg, 75) or a float probability (eg
|
|
0.75).
|
|
|
|
chance_test_min_size: (0) chance to run test_pool_min_size,
|
|
which:
|
|
- kills all but one osd
|
|
- waits
|
|
- kills that osd
|
|
- revives all other osds
|
|
- verifies that the osds fully recover
|
|
|
|
timeout: (360) the number of seconds to wait for the cluster
|
|
to become clean after each cluster change. If this doesn't
|
|
happen within the timeout, an exception will be raised.
|
|
|
|
revive_timeout: (75) number of seconds to wait for an osd asok to
|
|
appear after attempting to revive the osd
|
|
|
|
thrash_primary_affinity: (true) randomly adjust primary-affinity
|
|
|
|
chance_pgnum_grow: (0) chance to increase a pool's size
|
|
chance_pgpnum_fix: (0) chance to adjust pgpnum to pg for a pool
|
|
pool_grow_by: (10) amount to increase pgnum by
|
|
max_pgs_per_pool_osd: (1200) don't expand pools past this size per osd
|
|
|
|
pause_short: (3) duration of short pause
|
|
pause_long: (80) duration of long pause
|
|
pause_check_after: (50) assert osd down after this long
|
|
chance_inject_pause_short: (1) chance of injecting short stall
|
|
chance_inject_pause_long: (0) chance of injecting long stall
|
|
|
|
clean_wait: (0) duration to wait before resuming thrashing once clean
|
|
|
|
powercycle: (false) whether to power cycle the node instead
|
|
of just the osd process. Note that this assumes that a single
|
|
osd is the only important process on the node.
|
|
|
|
chance_test_backfill_full: (0) chance to simulate full disks stopping
|
|
backfill
|
|
|
|
chance_test_map_discontinuity: (0) chance to test map discontinuity
|
|
map_discontinuity_sleep_time: (40) time to wait for map trims
|
|
|
|
example:
|
|
|
|
tasks:
|
|
- ceph:
|
|
- thrashosds:
|
|
chance_down: 10
|
|
op_delay: 3
|
|
min_in: 1
|
|
timeout: 600
|
|
- interactive:
|
|
"""
|
|
if config is None:
|
|
config = {}
|
|
assert isinstance(config, dict), \
|
|
'thrashosds task only accepts a dict for configuration'
|
|
|
|
if 'powercycle' in config:
|
|
|
|
# sync everyone first to avoid collateral damage to / etc.
|
|
log.info('Doing preliminary sync to avoid collateral damage...')
|
|
ctx.cluster.run(args=['sync'])
|
|
|
|
if 'ipmi_user' in ctx.teuthology_config:
|
|
for t, key in ctx.config['targets'].iteritems():
|
|
host = t.split('@')[-1]
|
|
shortname = host.split('.')[0]
|
|
from ..orchestra import remote as oremote
|
|
console = oremote.getRemoteConsole(
|
|
name=host,
|
|
ipmiuser=ctx.teuthology_config['ipmi_user'],
|
|
ipmipass=ctx.teuthology_config['ipmi_password'],
|
|
ipmidomain=ctx.teuthology_config['ipmi_domain'])
|
|
cname = '{host}.{domain}'.format(
|
|
host=shortname,
|
|
domain=ctx.teuthology_config['ipmi_domain'])
|
|
log.debug('checking console status of %s' % cname)
|
|
if not console.check_status():
|
|
log.info(
|
|
'Failed to get console status for '
|
|
'%s, disabling console...'
|
|
% cname)
|
|
console=None
|
|
else:
|
|
# find the remote for this console and add it
|
|
remotes = [
|
|
r for r in ctx.cluster.remotes.keys() if r.name == t]
|
|
if len(remotes) != 1:
|
|
raise Exception(
|
|
'Too many (or too few) remotes '
|
|
'found for target {t}'.format(t=t))
|
|
remotes[0].console = console
|
|
log.debug('console ready on %s' % cname)
|
|
|
|
# check that all osd remotes have a valid console
|
|
osds = ctx.cluster.only(teuthology.is_type('osd'))
|
|
for remote, _ in osds.remotes.iteritems():
|
|
if not remote.console:
|
|
raise Exception(
|
|
'IPMI console required for powercycling, '
|
|
'but not available on osd role: {r}'.format(
|
|
r=remote.name))
|
|
|
|
log.info('Beginning thrashosds...')
|
|
first_mon = teuthology.get_first_mon(ctx, config)
|
|
(mon,) = ctx.cluster.only(first_mon).remotes.iterkeys()
|
|
manager = ceph_manager.CephManager(
|
|
mon,
|
|
ctx=ctx,
|
|
config=config,
|
|
logger=log.getChild('ceph_manager'),
|
|
)
|
|
ctx.manager = manager
|
|
thrash_proc = ceph_manager.Thrasher(
|
|
manager,
|
|
config,
|
|
logger=log.getChild('thrasher')
|
|
)
|
|
try:
|
|
yield
|
|
finally:
|
|
log.info('joining thrashosds')
|
|
thrash_proc.do_join()
|
|
manager.wait_for_recovery(config.get('timeout', 360))
|