Bug #38270: kcephfs TestClientLimits.test_client_pin fails with "client caps fell below min" - CephFS - Ceph

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Bug #38270

closed

kcephfs TestClientLimits.test_client_pin fails with "client caps fell below min"

Added by Venky Shankar about 5 years ago. Updated over 4 years ago.

Status:

Resolved

Priority:

Normal

Assignee:

Zheng Yan

Category:

Testing

Target version:

Ceph - v14.0.0

% Done:

Source:

Community (dev)

Tags:

Backport:

mimic,luminous

Regression:

Severity:

3 - minor

Reviewed:

Affected Versions:

ceph-qa-suite:

Component(FS):

kceph, qa-suite

Labels (FS):

Pull request ID:

26818

Crash signature (v1):

Crash signature (v2):

Description

test_client_pin assert failure as below (http://pulpito.ceph.com/yuriw-2019-02-06_16:27:19-kcephfs-wip-yuri6-testing-2019-02-06-0416-luminous-testing-basic-smithi/3557504/)

2019-02-06T23:25:15.592 INFO:tasks.cephfs_test_runner:======================================================================
2019-02-06T23:25:15.592 INFO:tasks.cephfs_test_runner:ERROR: test_client_pin (tasks.cephfs.test_client_limits.TestClientLimits)
2019-02-06T23:25:15.592 INFO:tasks.cephfs_test_runner:----------------------------------------------------------------------
2019-02-06T23:25:15.592 INFO:tasks.cephfs_test_runner:Traceback (most recent call last):
2019-02-06T23:25:15.592 INFO:tasks.cephfs_test_runner:  File "/home/teuthworker/src/github.com_ceph_ceph-c_wip-yuri6-testing-2019-02-06-0416-luminous/qa/tasks/cephfs/test_client_limits.py", line 107, in test_client_pin
2019-02-06T23:25:15.593 INFO:tasks.cephfs_test_runner:    self._test_client_pin(True, 800)
2019-02-06T23:25:15.593 INFO:tasks.cephfs_test_runner:  File "/home/teuthworker/src/github.com_ceph_ceph-c_wip-yuri6-testing-2019-02-06-0416-luminous/qa/tasks/cephfs/test_client_limits.py", line 99, in _test_client_pin
2019-02-06T23:25:15.593 INFO:tasks.cephfs_test_runner:    self.wait_until_true(expected_caps, timeout=60)
2019-02-06T23:25:15.593 INFO:tasks.cephfs_test_runner:  File "/home/teuthworker/src/github.com_ceph_ceph-c_wip-yuri6-testing-2019-02-06-0416-luminous/qa/tasks/ceph_test_case.py", line 139, in wait_until_true
2019-02-06T23:25:15.593 INFO:tasks.cephfs_test_runner:    if condition():
2019-02-06T23:25:15.594 INFO:tasks.cephfs_test_runner:  File "/home/teuthworker/src/github.com_ceph_ceph-c_wip-yuri6-testing-2019-02-06-0416-luminous/qa/tasks/cephfs/test_client_limits.py", line 91, in expected_caps
2019-02-06T23:25:15.594 INFO:tasks.cephfs_test_runner:    raise RuntimeError("client caps fell below min!")
2019-02-06T23:25:15.595 INFO:tasks.cephfs_test_runner:RuntimeError: client caps fell below min!

Happens only with kcephfs. According to Zheng:

<yanzheng> Kernel removes inodes without valid caps from its cache
<yanzheng> So num_caps become 1

Related issues 2 (0 open — 2 closed)