cv::imread导致段错误_OGG启动报错：不能创建共享内存段
错误日志信息：
mgr.prm: Datastore in 'dirbdb':BDB1546 unable to join the environment:
unable to create shared system memory region:No space left on Device
问题解决：
以前进程出问题的时候，在集群上关闭了ogf的资源，再次启动的时候资源跑到了另外一个节点，
导致在正确的节点上手动启动进城的时候报不能创建共享内存段
查看shmget
[root~]$ man shmget
SHMGET(2) Linux Programmer’s Manual SHMGET(2)
NAME
shmget - allocates a shared memory segment
SYNOPSIS
#include <sys/ipc.h>
#include <sys/shm.h>
int shmget(key_t key, size_t size, int shmflg);
DESCRIPTION
shmget() returns the identifier of the shared memory segment associated with the value of the argument key. A new shared
memory segment, with size equal to the value of size rounded up to a multiple of PAGE_SIZE, is created if key has the
value IPC_PRIVATE or key isn’t IPC_PRIVATE, no shared memory segment corresponding to key exists, and IPC_CREAT is speci-
fied in shmflg.