磁盘变化导致RAC不能启动
虚拟机：virtual box 4.3.6操作系统：Oracle Linux Server release 5.6
clusterware:10.2.0.1.0
数据库：10.2.0.1.0
现象： 在虚拟机上安装的RAC，原来使用的是固定大小的共享盘，系统内通过raw方式配置，现在raw设备结果如下
/etc/sysconfig/rawdevices文件：
/dev/raw/raw1 /dev/sdb1
/dev/raw/raw2 /dev/sdb2
/dev/raw/raw4 /dev/sdd
# fdisk -l /dev/sdb
Disk /dev/sdb: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 32 257008+ 83 Linux
/dev/sdb2 33 64 257040 83 Linux
# raw -qa
/dev/raw/raw1: bound to major 8, minor 17
/dev/raw/raw2: bound to major 8, minor 18
/dev/raw/raw4: bound to major 8, minor 48
# ls -l /dev/raw/*
crw-r----- 1 root oinstall 162, 1 May 14 10:16 /dev/raw/raw1
crw-r--r-- 1 oracle oinstall 162, 2 May 14 10:16 /dev/raw/raw2
crw-rw---- 1 oracle oinstall 162, 4 May 14 10:16 /dev/raw/raw4
# cat /etc/oracle/ocr.loc
ocrconfig_loc=/dev/raw/raw1
local_only=FALSE
后来测试Linux 的multipath ，通过Openfiler，连接两个网卡模拟，创建了一个normal 的diskgroup 。
# multipath -ll
14f504e46494c45523478335277462d7147304c2d5372756e dm-6 OPNFILER,VIRTUAL-DISK
size=128M features='0' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=1 status=active
| `- 5:0:0:2 sdj 8:144 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
`- 4:0:0:2 sdi 8:128 active ready running
vdisk2 (14f504e46494c45526d45565364762d317930612d4c6f6868) dm-7 OPNFILER,VIRTUAL-DISK
size=512M features='0' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=1 status=active
| `- 4:0:0:1 sdg 8:96 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
`- 5:0:0:1 sdh 8:112 active ready running
vdisk1 (14f504e46494c45525776336b52702d36784b382d6f717342) dm-5 OPNFILER,VIRTUAL-DISK
size=512M features='0' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=1 status=active
| `- 5:0:0:0 sdf 8:80 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
`- 4:0:0:0 sde 8:64 active ready running
重启数据库主机后，CRS不能启动/var/log/messages内容：
May 14 10:33:51 db1 logger: Cluster Ready Services waiting on dependencies. Diagnostics in /tmp/crsctl.2962.
May 14 10:33:51 db1 logger: Cluster Ready Services waiting on dependencies. Diagnostics in /tmp/crsctl.2931.
# cat /tmp/crsctl.2931
OCR initialization failed accessing OCR device: PROC-26: Error while accessing the physical storage Operating System error
现在看OCR的磁盘raw和fdisk结果跟以前没什么区别，这个该从哪下手解决解决？
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