记一次IBM AIX小鸡换硬盘（RAID-1镜像）

1、查看错误日志，确认错误。

root@IBM # errpt
IDENTIFIER TIMESTAMP  T C RESOURCE_NAME  DESCRIPTION
49A83216   0502193517 T H hdisk3         DISK OPERATION ERROR
49A83216   0502135217 T H hdisk1         DISK OPERATION ERROR
49A83216   0502073317 T H hdisk3         DISK OPERATION ERROR
BFE4C025   0430220417 P H sysplanar0     UNDETERMINED ERROR
49A83216   0430193117 T H hdisk3         DISK OPERATION ERROR
49A83216   0427192117 T H hdisk3         DISK OPERATION ERROR
49A83216   0417230017 T H hdisk3         DISK OPERATION ERROR
49A83216   0417185917 T H hdisk3         DISK OPERATION ERROR
812AD93D   0318135817 T H sisraid0       PREDICTIVE BATTERY PACK FAILURE

2、确认硬盘所在VG

root@IBM # lsvg
rootvg
datavg
root@IBM # lspv
hdisk0          00c6db0ed2402b66                    rootvg          active
hdisk1          00c6db0ed2d5717f                    rootvg          active
hdisk2          00c6db0ed2e3c6f5                    datavg          active
hdisk3          00c6db0ea4048e17                    datavg          active

3、拆分镜像

root@IBM # unmirrorvg datavg hdisk3
0516-1133 unmirrorvg: Quorum requirement turned on, varyoff and varyon
        volume group for this to take effect.
root@IBM # reducevg datavg hdisk3
root@IBM # lspv
hdisk0          00c6db0ed2402b66                    rootvg          active
hdisk1          00c6db0ed2d5717f                    rootvg          active
hdisk2          00c6db0ed2e3c6f5                    datavg          active
hdisk3          00c6db0ea4048e17                    None

4、更换硬盘

root@IBM # diag
→Task  Selection 
→RAID  Array  Manager
	→PCI-X  SCSI  Disk  Array  Manager
	→Diagnostics and Recovery Options
	→SCSI and SCSI RAID Hot Plug Manager
	→Replace/Remove a Device Attached to an SCSI Hot Swap Enclosure Device

选择需要更换的硬盘，回车，硬盘灯亮，取下来换上新硬盘然后回车即可。
5、检测新硬盘

root@IBM # cfgmgr

6、重建镜像

root@IBM # extendvg -f datavg hdisk3
root@IBM # mirrorvg -S datavg hdisk3
0516-1125 mirrorvg: Quorum requirement turned off, varyoff and varyon

        volume group for this to take effect.

附：此次更换硬盘中遇到的问题

换了新硬盘同步失败，有PP不能同步 syncvg -v vgname 强制同步报错 0516-934 0516-932
PP在坏道上，只能删除该PP上的LV，然后把坏盘从Mirror中剔除出去后重建LV并安装本来在该PV上的程序，还原数据。(以我的水平)