When we start boinc-client, the tasks are failing with ...

ACTIVE_TASK::start(): can't create memory-mapped file: shmget() failed

We cannot seem to get boinc to talk to a project to get more tasks, and it doesn't want to run the tasks it's got.

The log looks like this ...

25-Nov-2014 11:10:22 [---] Starting BOINC client version 7.2.42 for x86_64-pc-linux-gnu
25-Nov-2014 11:10:22 [---] log flags: file_xfer, sched_ops, task, app_msg_receive, app_msg_send, checkpoint_debug
25-Nov-2014 11:10:22 [---] log flags: task_debug
25-Nov-2014 11:10:22 [---] Libraries: libcurl/7.32.0 NSS/3.17.2 Basic ECC zlib/1.2.8 libidn/1.28 libssh2/1.4.3
25-Nov-2014 11:10:22 [---] Data directory: /var/lib/boinc
25-Nov-2014 11:10:22 [---] CAL: ATI GPU 0: ATI Radeon HD 5700/6750/6770 series (Juniper) (CAL version 1.4.1848, 1024MB, 960MB available, 2016 GFLOPS peak)
25-Nov-2014 11:10:22 [---] OpenCL: AMD/ATI GPU 0: ATI Radeon HD 5700/6750/6770 series (Juniper) (driver version 1573.4, device version OpenCL 1.2 AMD-APP (1573.4), 1024MB, 960MB available, 2016 GFLOPS peak)
25-Nov-2014 11:10:22 [---] OpenCL CPU: AMD Athlon(tm) II X4 635 Processor (OpenCL driver vendor: Advanced Micro Devices, Inc., driver version 1573.4 (sse2), device version OpenCL 1.2 AMD-APP (1573.4))
25-Nov-2014 11:10:22 [---] Host name: pluto
25-Nov-2014 11:10:22 [---] Processor: 4 AuthenticAMD AMD Athlon(tm) II X4 635 Processor [Family 16 Model 5 Stepping 2]
25-Nov-2014 11:10:22 [---] Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt hw_pstate npt lbrv svm_lock nrip_save
25-Nov-2014 11:10:22 [---] OS: Linux: 3.17.3-200.fc20.x86_64
25-Nov-2014 11:10:22 [---] Memory: 3.86 GB physical, 9.77 GB virtual
25-Nov-2014 11:10:22 [---] Disk: 448.23 GB total, 393.26 GB free
25-Nov-2014 11:10:22 [---] Local time is UTC +0 hours
25-Nov-2014 11:10:22 [SETI@home] URL http://setiathome.berkeley.edu/; Computer ID ****; resource share 100
25-Nov-2014 11:10:22 [climateprediction.net] URL http://climateprediction.net/; Computer ID ****; resource share 100
25-Nov-2014 11:10:22 [Einstein@Home] URL http://einstein.phys.uwm.edu/; Computer ID ****; resource share 100
25-Nov-2014 11:10:22 [SETI@home] General prefs: from SETI@home (last modified 07-Nov-2012 15:55:30)
25-Nov-2014 11:10:22 [SETI@home] Host location: none
25-Nov-2014 11:10:22 [SETI@home] General prefs: using your defaults
25-Nov-2014 11:10:22 [---] Reading preferences override file
25-Nov-2014 11:10:22 [---] Preferences:
25-Nov-2014 11:10:22 [---] max memory usage when active: 1976.33MB
25-Nov-2014 11:10:22 [---] max memory usage when idle: 3557.40MB
25-Nov-2014 11:10:22 [---] max disk usage: 394.83GB
25-Nov-2014 11:10:22 [---] max CPUs used: 2
25-Nov-2014 11:10:22 [---] don't use GPU while active
25-Nov-2014 11:10:22 [---] (to change preferences, visit a project web site or select Preferences in the Manager)
25-Nov-2014 11:10:22 [---] Not using a proxy
25-Nov-2014 11:10:23 Initialization completed
25-Nov-2014 11:10:23 [Einstein@Home] ACTIVE_TASK::start(): can't create memory-mapped file: shmget() failed
[mike@pluto ~]# sudo systemctl stop boinc-client

Some history. We had a HDD crash. I managed to rescue most data from backups, but the O/S stuff was never backed up - just user data. The idea was we'd simply re-install the software from the latest distribution.

So with a completely clean disk, we installed RedHat Fedora 20. On top of that we rolled in our backups of /home & /var/lib/boinc.

But as you can see the client isn't running properly.

df is showing 88k used from 4G for /dev/shm so there's plenty of room

It's not an selinux problem.

Anyone got any ideas ?

df is showing 88k used from 4G for /dev/shm so there's plenty of room

What's the limit per process?

---

Thanks for the reply, but how do I find that out ? I've got this...

[mike@pluto ~]$ cat /proc/sys/kernel/shmmax
18446744073692774399
[mike@pluto ~]$ cat /proc/sys/kernel/shmmni
4096
[mike@pluto ~]$ cat /proc/sys/kernel/shmall
18446744073692774399
[mike@pluto ~]$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 15729
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 1024
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
[mike@pluto ~]$

OK. Solved.

Owner permissions were not set correctly on /var/lib/boinc.

[root@pluto mylib]# ls -al /var/lib
total 204
drwxr-xr-x. 50 root root 4096 Nov 25 15:19 .
drwxr-xr-x. 19 root root 4096 Nov 25 15:19 ..
drwxrwxr-x. 5 unbound boinc 4096 Nov 25 16:23 boinc
drwxrwxr-x. 3 boinc boinc 4096 Nov 22 16:26 boinc_orig

Did a 'chown -R boinc:boinc /var/lib/boinc' and it's all OK.