oracle asm 在线替换存储

数据库版本：

Release 11.2.0.4.0 Production

磁盘信息检查：

[grid@db01 ~]$ crsctl query css votedisk
 STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
 1. ONLINE   600ed35a4c5a4f02bfbb1ea7b05f1cd8 (/dev/oracleasm/disks/OCR01) [OCR]
 2. ONLINE   41d6d012d12f4fe4bf8d5ecc955c9d07 (/dev/oracleasm/disks/OCR02) [OCR]
 3. ONLINE   7167bc2d62bf4fd8bfbd8cb6edea469c (/dev/oracleasm/disks/OCR03) [OCR]
Located 3 voting disk(s)

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col name format a15;
col path format a30;
col  failgroup format a20;
col failgroup_type format a20;
select dg.name, d.path, d.failgroup, d.failgroup_type,d.state
from v$asm_diskgroup dg, v$asm_disk d
where dg.group_number = d.group_number 
order by dg.name, d.path, d.failgroup;
#
and dg.name = 'OCR'
order by dg.name, d.path, d.failgroup;

NAME            PATH                           FAILGROUP            FAILGRO
--------------- ------------------------------ -------------------- -------
OCR             /dev/oracleasm/disks/OCR01     OCR_0000             REGULAR
OCR             /dev/oracleasm/disks/OCR02     OCR_0001             REGULAR
OCR             /dev/oracleasm/disks/OCR03     OCR_0002             REGULAR

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添加磁盘，并删除旧磁盘

#在次过程之中不需要对votedisk进行处理，自动replace到新的磁盘。

#添加新磁盘到磁盘组
alter diskgroup ocr add disk
'/dev/oracleasm/disks/OCR101',
'/dev/oracleasm/disks/OCR102',
'/dev/oracleasm/disks/OCR103';
#删除旧磁盘
ALTER DISKGROUP OCR drop disk  
'OCR_0000',
'OCR_0001',
'OCR_0002';

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#待同步完成之后，检查磁盘状态。
#经测试，存在votedisk 磁盘组，在添加删除磁盘，自动替换votedisk到新磁盘。