XenServer PV模式导致程序coredump
2016-06-07 by dongnan
问题描述
某台 xenserver 虚拟机，发现如果创建的虚拟机是 pv模式则php程序会coredump，如果虚拟机使用hvm模式php程序则不会coredmp，特此记录。
环境描述
虚拟化服务器: XenServer 6.5
虚拟机操作系统: CentOS 6.7
PHP-FPM: 5.6
错误信息
php-fpm 日志
[24-Mar-2016 17:00:09.848375] WARNING: pid 20014, fpm_children_bury(),
line 252: [pool www] child 20017 exited on signal 4 (SIGILL - core dumped)
after 18.072100 seconds from start
core-dump 日志
Mar 24 17:00:09 test01 abrt[20122]: Saved core dump of pid 20017 (/usr/local/php/sbin/php-fpm) to /var/spool/abrt/ccpp-2016-03-24-17:00:05-20017 (548155392 bytes)
Mar 24 17:00:09 test01 abrtd: Directory 'ccpp-2016-03-24-17:00:05-20017' creation detected
Mar 24 17:00:09 test01 abrtd: Executable '/usr/local/php/sbin/php-fpm' doesn't belong to any package and ProcessUnpackaged is set to 'no'
Mar 24 17:00:09 test01 abrtd: 'post-create' on '/var/spool/abrt/ccpp-2016-03-24-17:00:05-20017' exited with 1
Mar 24 17:00:09 test01 abrtd: Deleting problem directory '/var/spool/abrt/ccpp-2016-03-24-17:00:05-20017'
dmesg信息
php-fpm[20017] trap invalid opcode ip:7f9667949d60 sp:7ffda5e49ac8 error:0 in libfreeblpriv3.so[7f96678f7000+72000]
配置core变量
echo "/tmp/core.%e.%p" >/proc/sys/kernel/core_pattern # ulimit -c unlimited