qemu-kvm 虚拟机固定崩溃问题

Question

主机系统为Centos7 虚拟机同主机

每运行一段时间后虚拟机都会自行崩溃

查询libvirtd.log日志文件后发现如下错误信息

2020-08-13 13:46:15.906+0000: 2018: error : qemuMonitorIO:718 : 内部错误：End of file from qemu monitor
2020-08-13 13:46:15.906+0000: 2018: debug : qemuMonitorIO:765 : Error on monitor 内部错误：End of file from qemu monitor

相对应虚拟机log日志文件中发现如下错误信息

qemu: qemu_thread_create: Resource temporarily unavailable

经free -m检验 主机可用内存远超于虚拟机分配内存

主机执行ulimit -a返回结果如下

[root@localhost ~]# 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) 385903
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 204800
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 1024
cpu time               (seconds, -t) unlimited
max user processes              (-u) 204800
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

Answer 1

单独运行qwmu是否崩溃，关闭虚拟化，限定qemu在一个cpu内核上运行，是否崩溃，运行别的操作系统是否崩溃。