[Qemu-discuss] Guest crash with "pthread_create failed:kvm resource temporarily unavailable".

[John Y.]

My guest crashed with "pthread_create failed:kvm resource temporarily unavailable". in libvirt log.

Qemu is run as root:

# cat /etc/libvirt/qemu.conf | grep root

user = "root"

group = "root"

qemu version:

#/usr/libexec/qemu-kvm --version
QEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2), Copyright (c) 2003-2008 Fabrice Bellard 

(The  default version in Centos6)

And "max user processes" is set to 1033149  default. 

 # cat /proc/30141/limits 
Limit                     Soft Limit           Hard Limit           Units     
Max cpu time              unlimited            unlimited            seconds   
Max file size             unlimited            unlimited            bytes     
Max data size             unlimited            unlimited            bytes     
Max stack size            8388608              unlimited            bytes     
Max core file size        0                    unlimited            bytes     
Max resident set          unlimited            unlimited            bytes     
Max processes             1033149              1033149              processes 
Max open files            1024                 4096                 files     
Max locked memory         65536                65536                bytes     
Max address space         unlimited            unlimited            bytes     
Max file locks            unlimited            unlimited            locks     
Max pending signals       1033149              1033149              signals   
Max msgqueue size         819200               819200               bytes     
Max nice priority         0                    0                    
Max realtime priority     0                    0                    
Max realtime timeout      unlimited            unlimited            us  

#ulimit -a

core file size          (blocks, -c) unlimited

data seg size           (kbytes, -d) unlimited

scheduling priority             (-e) 0

file size               (blocks, -f) unlimited

pending signals                 (-i) 1033149

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) 1033149

virtual memory          (kbytes, -v) unlimited

file locks                      (-x) unlimited

Is this probrom caused by the limition of open files?

If no, what can be the reason?

Regards

John.