ocfs2 oracle集群文件系统常见问题解决方案.docVIP

Node 0：centos238 Ip：192.168.192.238 Node 1：xen241 Ip：192.168.192.241 Node 2：xen242 Ip：192.168.192.242 Problem 1、 Discription： [root@xen241 init.d]# service o2cb configure Configuring the O2CB driver. This will configure the on-boot properties of the O2CB driver. The following questions will determine whether the driver is loaded on boot. The current values will be shown in brackets ([]). Hitting ENTER without typing an answer will keep that current value. Ctrl-C will abort. Load O2CB driver on boot (y/n) [n]: n Cluster stack backing O2CB [o2cb]: o2cb Cluster to start on boot (Enter none to clear) [ocfs2]: ocfs2 Specify heartbeat dead threshold (=7) [301]: 301 Specify network idle timeout in ms (=5000) [30000]: 30000 Specify network keepalive delay in ms (=1000) [2000]: 2000 Specify network reconnect delay in ms (=2000) [2000]: 2000 Writing O2CB configuration: OK Stopping O2CB cluster ocfs2: OK Unloading module ocfs2: OK Unmounting ocfs2_dlmfs filesystem: OK Unloading module ocfs2_dlmfs: OK Unmounting configfs filesystem: OK Unloading module configfs: OK [root@xen241 init.d]# mount.ocfs2 /dev/sdc1 /mnt/ocfs2/ mount.ocfs2: Unable to access cluster service while trying initialize cluster 这是由于刚刚配置了o2cb，需要重启一下ocfs2： [root@xen241 init.d]# service o2cb stop ls: /config: No such file or directory [root@xen241 init.d]# service o2cb start [root@xen241 init.d]# service o2cb load Loading filesystem configfs: OK Mounting configfs filesystem at /sys/kernel/config: OK Loading filesystem ocfs2_dlmfs: OK Mounting ocfs2_dlmfs filesystem at /dlm: OK [root@xen241 init.d]# service o2cb online ocfs2 Starting O2CB cluster ocfs2: OK Problem 2、 Discription：所有节点都成功挂载文件系统，挂载次序为node2→node1→node0。当在node0上更改文件后，在node1上马上能够看得到更新的文件内容，但是在node2上，看不到更新的内容。 Problem 3、 Discription：接problem2，当将node2上磁盘解挂（即umount）时，node0自动重启了！！等node0重启后，成功启动o2cb，成功挂载了文件系统。 Problem 4、 Discription：有三个节点，前连个节点成功挂载文件系统，当在第三个节点上挂在时出现如下问题： o2net: connected to node xen238 (num 0) at 192.168.192.238:7777 o2net: connect