问：RAID5两快盘出现黄灯后的恢复

　　环境:IBM P610主机+4channel scsi raid 卡,4个18Gdisk作raid5,没有hotspare.

　　第一天:客户说有一个盘黄灯亮

　　第三天:另外一个盘黄灯亮

　　#lspv的时候输出只有

　　hdisk0 000b85cdf79f0ec5 rootvg

　　而做完RAID后的disk没有了

　　#lsdev -Cc disk

　　hdisk0 Available 10-60-00-0,0 16 Bit LVD SCSI Disk Drive

　　hdisk1 Defined 20-60-00-0,0 SCSI Disk Array RAID 5

　　VG不能varyon

　　diag运行出现下面的错误.

　　The Service Request Number(s)/Probable Cause(s)

　　(causes are listed in descending order of probability):

　　66D-111: The disk has been failed by the adapter.

　　FRU: n/a [18CCH/ID 2B

　　Physical Disk

　　66D-111: The disk has been failed by the adapter.

　　FRU: n/a [18CCH/ID 2C

　　Physical Disk

　　答：恢复操作步骤:

　　1#smitty pdam

　　List PCI SCSI Disk Arrays

　　Create a PCI SCSI Disk Array

　　Delete a PCI SCSI Disk Array

　　Configure a Defined PCI SCSI Disk Array

　　Change/Show a PCI SCSI Disk Array

　　Reconstruct a PCI SCSI Disk Array

　　Revive a FAILED Drive in a PCI SCSI Disk Array

　　Fail a Drive in a PCI SCSI Disk Array

　　Change/Show PCI SCSI RAID Drive Status

　　Perform Consistency Check

　　Display Status of Adapter Write Cache

　　Recovery Options

　　选择List PCI SCSI Disk Arrays

　　7mscraid0 Available 20-60 PCI 4-Channel Ultra3 SCSI RAID Adapter[出现选择]

　　hdisk1 Defined Raid 5 20-60-00-0,0 52072 MB Status DEAD

　　hdisk1 2A Channel 2 ID A ONLINE

　　hdisk1 2B Channel 2 ID B FAILED DRIVE

　　hdisk1 2C Channel 2 ID C FAILED DRIVE

　　hdisk1 2D Channel 2 ID D ONLINE

　　2#smitty pdam

　　Revive a FAILED Drive in a PCI SCSI Disk Array[目的强行将硬盘给online[/color:67f1065d61]]

　　2B Channel 2 ID B FAILED DRIVE

　　2C Channel 2 ID C FAILED DRIVE

　　选择2B Channel 2 ID B FAILED DRIVE

　　PCI SCSI Disk Array hdisk1

　　Channel ID C2B

　　会车后出现下面的提示

　　Continuing may delete information you may want

　　to keep. This is your last chance to stop

　　before continuing. [26;19HPress Enter to continue.

　　Press Cancel to return to the application

　　敲会车键继续[ 确认命令完成是ok的 ]

　　3通过List PCI SCSI Disk Arrays查看RAID的状态

　　出现scraid0 Available 20-60 PCI 4-Channel Ultra3 SCSI RAID Adapter[进行选择]

　　hdisk1 Defined Raid 5 20-60-00-0,0 52072 MB Status DEGRADED

　　hdisk1 2A Channel 2 ID A ONLINE

　　hdisk1 2B Channel 2 ID B ONLINE

　　hdisk1 2C Channel 2 ID C FAILED DRIVE

　　hdisk1 2D Channel 2 ID D ONLINE

　　注意在这是2B已经是online.

　　4执行diag命令进行诊断,结果显示入下

　　The Service Request Number(s)/Probable Cause(s)

　　causes are listed in descending order of probability):

　　66D-111: The disk has been failed by the adapter.

　　FRU: n/a CH/ID 2B

　　Physical Disk

　　5#varyonvg datavg

　　此时datavg能够varyon,同时文件系统可以mount上,

　　6换上2CChannel上的硬盘,RAID进行数据重建.重建完成后ok

　　#smitty pdam

　　List PCI SCSI Disk Arrays

　　结果如下:

　　hdisk1 Available Raid 5 20-60-00-0,0 52072 MB Status OPTIMAL

　　hdisk1 2A Channel 2 ID A ONLINE – 17357Meg

　　hdisk1 2B Channel 2 ID B ONLINE – 17357Meg

　　hdisk1 2C Channel 2 ID C ONLINE – 17357Meg

　　hdisk1 2D Channel 2 ID D ONLINE – 17357Meg

　　7#varyonvg datavg[结果显示ok]

　　8#fsck -y /dev/datalv

　　** Checking /dev/rdatalv (/orada)

　　** Phase 0 – Check Log

　　log redo processing for /dev/rdatalv

　　** Phase 1 – Check Blocks and Sizes

　　Block count wrong, Inode=16388 (ADJUSTED)

　　Fragment allocated to file larger than 32k (Inode=16664)

　　Fragment allocated to file larger than 32k (Inode=16665)

　　Fragment allocated to file larger than 32k (Inode=16666)

　　Fragment allocated to file larger than 32k (Inode=16670)

　　Fragment allocated to file larger than 32k (Inode=16671)

　　Unknown file type I=16785 owner=root mode=0

　　size=0 mtime=Jan 18 21:05 1970 (CLEARED)

　　…….

　　…….

　　…….

　　size=0 mtime=Jan 01 08:00 1970 (CLEARED)

　　** Phase 5 – Check Inode Map

　　Bad Inode Map (SALVAGED)

　　** Phase 5b – Salvage Inode Map

　　** Phase 6 – Check Block Map

　　Bad Block Map (SALVAGED)

　　** Phase 6b – Salvage Block Map

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　map agsize bad, vm1->agsize = -16385 agrsize = 16384

　　-1 blocks missing

　　-1 blocks missing

　　Superblock is marked dirty (FIXED)

　　-430 files 70114432 blocks 53128488 free

　　***** Filesystem was modified *****

　　9#mount /oradata

　　进行读些测试,结果ok.

　　在os一级ok,文件系统能正常进行读些.