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== Comment: #1 - Application Cdeadmin <cdead...@us.ibm.com> - 2016-12-19
04:15:10 ==

Configuration: IBM 8001-22C (S822LC), LSI SAS adapters, SMC 4U90 disk
drawers, HDD (180) 7.3TB

Problem: HTX exercisers stopped on error, with HTX log showing "rc 11,
errno 11 from main(): pthread_create"

htxubuntu-425

lpar: busybee.aus.stglabs.ibm.com (root/ lab passwd)

root@busybee:~# uname -a
Linux busybee 4.4.0-51-generic #72-Ubuntu SMP Thu Nov 24 18:27:59 UTC 2016 
ppc64le ppc64le ppc64le GNU/Linux

root@busybee:~# cat /tmp/htxerr

/dev/sdh          Dec 12 23:52:42 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sdh          Dec 12 23:52:42 2016 err=0000000b sev=1 hxestorage
Hardware Exerciser stopped on an error

/dev/sdao         Dec 12 23:52:42 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sdao         Dec 12 23:52:42 2016 err=0000000b sev=1 hxestorage
Hardware Exerciser stopped on an error

/dev/sddx         Dec 12 23:52:42 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sddx         Dec 12 23:52:42 2016 err=0000000b sev=1 hxestorage
Hardware Exerciser stopped on an error

/dev/sdcz         Dec 12 23:52:42 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sdcz         Dec 12 23:52:42 2016 err=0000000b sev=1 hxestorage
Hardware Exerciser stopped on an error

/dev/sddp         Dec 12 23:52:42 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sddp         Dec 12 23:52:42 2016 err=0000000b sev=1 hxestorage
Hardware Exerciser stopped on an error

No errors logged in syslog after starting HTX:

==== State: Open by: asperez on 16 December 2016 10:28:02 ====
This error recreated on the smaller 1U Open Power system with the same smaller 
1-adapter/1-4U90 drawer/90 HDD. There are 2 cables connected to the drawer (one 
to each ESM) that requires multipath enabled. 

lpar: yellowbee

root@yellowbee:~# cat /tmp/htxerr

/dev/sdao         Dec 16 01:14:44 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sdak         Dec 16 01:14:44 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sdt          Dec 16 01:14:44 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sdaz         Dec 16 01:14:44 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sdn          Dec 16 01:14:44 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sdv          Dec 16 01:14:44 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sdaj         Dec 16 01:14:44 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

/dev/sdal         Dec 16 01:14:44 2016 err=0000000b sev=1 hxestorage
rc 11, errno 11 from main(): pthread_create

==== State: Open by: cde00 on 19 December 2016 02:48:46 ====

This defect will go to Linux as even after making the below 2 changes in
systemd resource limit, errors are seen:

root@yellowbee:/etc/systemd/logind.conf.d# cat htxlogindcustom.conf
[Login]
UserTasksMax=infinity
root@yellowbee:/etc/systemd/logind.conf.d# cat 
../system.conf.d/htxsystemdcustom.conf
[Manager]
DefaultTasksAccounting=yes
DefaultTasksMax=infinity

root@yellowbee:/etc/systemd/logind.conf.d#

logind limit for MaxUserTask as well as systemd limit was made infinite.
Please look defect SW363655 for more details and the suggestion given earlier 
by Linux team.

errors are still seen. So, would ask Linux team to take a look and see if 
anything else is causing these
errors.

== Comment: #3 - Kevin W. Rudd <ru...@us.ibm.com> - 2016-12-19 17:34:27 ==
It appears that the version of logind on this system does not support the value 
of "infinity", and is reverting to the default of 12288: 

# cat /sys/fs/cgroup/pids/user.slice/user-0.slice/pids.max
12288

As a workaround until this can be resolved, specify an exact value.  You
can try using the current system thread-max value:

# cat /proc/sys/kernel/threads-max
3974272

/etc/systemd/logind.conf.d/htxlogindcustom.conf:
[Login]
UserTasksMax=3974272

== Comment: #4 - Kevin W. Rudd - 2016-12-20 10:25:09 ==

Canonical,

This issue appears to map to the following systemd bug and patch:

https://github.com/systemd/systemd/issues/3833

https://github.com/systemd/systemd/commit/f50582649f8eee73f59aff95fadd9a963ed4ffea

This patch appears to be included in debian/232-7, but is missing in the
xenial and yakkety versions.

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: architecture-ppc64le bot-comment bugnameltc-150030 severity-high 
targetmilestone-inin16042
-- 
systemd/logind parsing problem: HTX exercisers stopped on error: rc 11, errno 
11 from main(): pthread_create
https://bugs.launchpad.net/bugs/1651518
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