环境：RHEL 6.4 Oracle 11.2.0.3 ASM单实例
1.重启主机后, DATA diskgroup启动不成功,现象如下：
代码语言：javascript复制[grid@JY-DB ~]$ crsctl stat res -t
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NAME TARGET STATE SERVER STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
ONLINE OFFLINE jy-db
ora.LISTENER.lsnr
ONLINE ONLINE jy-db
ora.asm
ONLINE ONLINE jy-db Started
ora.ons
OFFLINE OFFLINE jy-db
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.cssd
1 ONLINE ONLINE jy-db
ora.diskmon
1 OFFLINE OFFLINE
ora.evmd
1 ONLINE ONLINE jy-db
ora.jyzhao.db
1 ONLINE OFFLINE Instance Shutdown 2.尝试手动启动data磁盘组失败，报错如下：
代码语言：javascript复制[grid@JY-DB ~]$ srvctl start diskgroup -g data
PRCR-1079 : 无法启动资源 ora.DATA.dg
CRS-5017: The resource action "ora.DATA.dg start" encountered the following error:
ORA-15032: not all alterations performed
ORA-15017: diskgroup "DATA" cannot be mounted
ORA-15063: ASM discovered an insufficient number of disks for diskgroup "DATA"
. For details refer to "(:CLSN00107:)" in "/u01/app/11.2.0/grid/log/jy-db/agent/ohasd/oraagent_grid/oraagent_grid.log".
CRS-2674: Start of 'ora.DATA.dg' on 'jy-db' failed
[grid@JY-DB ~]$ id
uid=501(grid) gid=500(oinstall) 组=500(oinstall),501(dba),502(asmadmin),503(asmdba),504(asmoper) 环境=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
[grid@JY-DB ~]$ 3.网上搜索得知Linux重启会重置raw设备的ownership.
代码语言：javascript复制On Linux, at least, a restart of the system will reset the ownership of raw devices. The usual trick is to have some config or init routine reset the ownership.4.检查data磁盘组对应的磁盘设备属主，更改为grid:oinstall
代码语言：javascript复制[root@JY-DB ~]# cd /dev/mapper/
[root@JY-DB mapper]# ls
control ora_vg-lv_asm1 ora_vg-lv_asm2 ora_vg-lv_asm3 ora_vg-lv_asm4 ora_vg-lv_usr2 VolGroup-lv_home VolGroup-lv_root VolGroup-lv_swap
[root@JY-DB mapper]# ls -lh
总用量 0
crw-rw----. 1 root root 10, 58 10月 9 10:46 control
lrwxrwxrwx. 1 root root 7 10月 9 10:46 ora_vg-lv_asm1 -> ../dm-2
lrwxrwxrwx. 1 root root 7 10月 9 10:46 ora_vg-lv_asm2 -> ../dm-3
lrwxrwxrwx. 1 root root 7 10月 9 10:46 ora_vg-lv_asm3 -> ../dm-4
lrwxrwxrwx. 1 root root 7 10月 9 10:46 ora_vg-lv_asm4 -> ../dm-5
lrwxrwxrwx. 1 root root 7 10月 9 10:46 ora_vg-lv_usr2 -> ../dm-6
lrwxrwxrwx. 1 root root 7 10月 9 10:46 VolGroup-lv_home -> ../dm-7
lrwxrwxrwx. 1 root root 7 10月 9 10:46 VolGroup-lv_root -> ../dm-0
lrwxrwxrwx. 1 root root 7 10月 9 10:46 VolGroup-lv_swap -> ../dm-1
[root@JY-DB mapper]# cd ..
[root@JY-DB dev]# ls -lh
总用量 0
drwxr-xr-x. 2 root root 820 10月 9 10:46 block
drwxr-xr-x. 2 root root 2.5K 10月 9 10:47 char
crw-------. 1 root root 5, 1 10月 9 10:46 console
lrwxrwxrwx. 1 root root 11 10月 9 10:46 core -> /proc/kcore
drwxr-xr-x. 6 root root 120 10月 9 10:46 cpu
crw-rw----. 1 root root 10, 61 10月 9 10:46 cpu_dma_latency
crw-rw----. 1 root root 10, 62 10月 9 10:46 crash
drwxr-xr-x. 5 root root 100 10月 9 10:46 disk
brw-rw----. 1 root disk 253, 0 10月 9 10:46 dm-0
brw-rw----. 1 root disk 253, 1 10月 9 10:46 dm-1
brw-rw----. 1 root disk 253, 2 10月 9 10:46 dm-2
brw-rw----. 1 root disk 253, 3 10月 9 10:46 dm-3
brw-rw----. 1 root disk 253, 4 10月 9 10:46 dm-4
brw-rw----. 1 root disk 253, 5 10月 9 10:46 dm-5
brw-rw----. 1 root disk 253, 6 10月 9 10:46 dm-6
brw-rw----. 1 root disk 253, 7 10月 9 10:46 dm-7
……
crw-rw-rw-. 1 root root 1, 5 10月 9 10:46 zero
[root@JY-DB dev]# chown grid:oinstall dm*
[root@JY-DB dev]# ls -lh
总用量 0
drwxr-xr-x. 2 root root 820 10月 9 10:46 block
drwxr-xr-x. 2 root root 2.5K 10月 9 10:47 char
crw-------. 1 root root 5, 1 10月 9 10:46 console
lrwxrwxrwx. 1 root root 11 10月 9 10:46 core -> /proc/kcore
drwxr-xr-x. 6 root root 120 10月 9 10:46 cpu
crw-rw----. 1 root root 10, 61 10月 9 10:46 cpu_dma_latency
crw-rw----. 1 root root 10, 62 10月 9 10:46 crash
drwxr-xr-x. 5 root root 100 10月 9 10:46 disk
brw-rw----. 1 grid oinstall 253, 0 10月 9 10:46 dm-0
brw-rw----. 1 grid oinstall 253, 1 10月 9 10:46 dm-1
brw-rw----. 1 grid oinstall 253, 2 10月 9 10:46 dm-2
brw-rw----. 1 grid oinstall 253, 3 10月 9 10:46 dm-3
brw-rw----. 1 grid oinstall 253, 4 10月 9 10:46 dm-4
brw-rw----. 1 grid oinstall 253, 5 10月 9 10:46 dm-5
brw-rw----. 1 grid oinstall 253, 6 10月 9 10:46 dm-6
brw-rw----. 1 grid oinstall 253, 7 10月 9 10:46 dm-7
……
crw-rw-rw-. 1 root root 1, 5 10月 9 10:46 zero5.此时再次尝试手动启动磁盘组成功
代码语言：javascript复制[grid@JY-DB ~]$ srvctl start diskgroup -g data
[grid@JY-DB ~]$ crsctl stat res -t
--------------------------------------------------------------------------------
NAME TARGET STATE SERVER STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
ONLINE ONLINE jy-db
ora.LISTENER.lsnr
ONLINE ONLINE jy-db
ora.asm
ONLINE ONLINE jy-db Started
ora.ons
OFFLINE OFFLINE jy-db
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.cssd
1 ONLINE ONLINE jy-db
ora.diskmon
1 OFFLINE OFFLINE
ora.evmd
1 ONLINE ONLINE jy-db
ora.jyzhao.db
1 ONLINE ONLINE jy-db Open
[grid@JY-DB ~]$ 
