Hi, We have a failure on test 004_basic_sanity.vdsm_recovery on basic suite. the error seems to be an error in KSM (invalid arg) can you please have a look? Link and headline of suspected patches: cq identified this as the cause of failure: https://gerrit.ovirt.org/#/c/101603/ - localFsSD: Enable 4k block_size and alignments However, I can see some py3 patches merged at the same time: py3: storage: Fix bytes x string in lvm locking type validation - https://gerrit.ovirt.org/#/c/101124/ Link to Job: http://jenkins.ovirt.org/job/ovirt-master_change-queue-tester/14963/ Link to all logs: http://jenkins.ovirt.org/job/ovirt-master_change-queue-tester/14963/artifact... (Relevant) error snippet from the log: <error> s/da0eeccb-5dd8-47e5-9009-8a848fe17ea5.ovirt-guest-agent.0',) {} MainProcess|vm/da0eeccb::DEBUG::2019-07-10 07:53:41,003::supervdsm_server::106::SuperVdsm.ServerCallback::(wrapper) return prepareVmChannel with None MainProcess|jsonrpc/1::DEBUG::2019-07-10 07:54:05,580::supervdsm_server::99::SuperVdsm.ServerCallback::(wrapper) call ksmTune with ({u'pages_to_scan': 64, u'run': 1, u'sleep _millisecs': 89.25152465623417},) {} MainProcess|jsonrpc/1::ERROR::2019-07-10 07:54:05,581::supervdsm_server::103::SuperVdsm.ServerCallback::(wrapper) Error in ksmTune Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/supervdsm_server.py", line 101, in wrapper res = func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/supervdsm_api/ksm.py", line 45, in ksmTune f.write(str(v)) IOError: [Errno 22] Invalid argument MainProcess|jsonrpc/5::DEBUG::2019-07-10 07:56:33,211::supervdsm_server::99::SuperVdsm.ServerCallback::(wrapper) call rmAppropriateMultipathRules with ('da0eeccb-5dd8-47e5-9009-8a848fe17ea5',) {} </error>