恢复SDS中坏掉的一块硬盘的数据(转)[@more@]一、首先查看当前meta设备状态： # metastat >$HOME/metastat.0820 # more metastat.0820 d1:Mirror Submirror 0:d11 State:Okay Submirror 1:d12 State:Okay Pass: 1 Read option: roundrobin(default) Write option: parallerl(default) Size:4274640 blocks d 11: Submirror of d1 State:Okay Hot spare pool: hsp000 Size: 4274640 blocks Stripe 0: Device Start Block Dbase State Hot spare C0t0d0s0 0 No Okay d 12: Submirror of d1 State:Okay Hot spare pool: hsp000 Size: 4274640 blocks Stripe 0: Device Start Block Dbase State Hot spare C3t0d0s0 0 No Okay c2t0d0s0 d2:Mirror Submirror 0:d21 State:Okay Submirror 1:d22 State:Okay Pass: 1 Read option: roundrobin(default) Write option: parallerl(default) Size:2049840 blocks d 21: Submirror of d2 State:Okay Hot spare pool: hsp000 Size: 2049840 blocks Stripe 0: Device Start Block Dbase State Hot spare C0t0d0s1 0 No Okay d 22: Submirror of d2 State:Okay Hot spare pool: hsp000 Size: 2049840 blocks Stripe 0: Device Start Block Dbase State Hot spare C3t0d0s1 0 No Okay d3:Mirror Submirror 0:d31 State:Okay Submirror 1:d32 State:Okay Pass: 1 Read option: roundrobin(default) Write option: parallerl(default) Size:2049840 blocks d 31: Submirror of d3 State:Okay Hot spare pool: hsp000 Size: 2049840 blocks Stripe 0: Device Start Block Dbase State Hot spare C0t0d0s3 0 No Okay d 32: Submirror of d3 State:Okay Hot spare pool: hsp000 Size: 2049840 blocks Stripe 0: Device Start Block Dbase State Hot spare C3t0d0s3 0 No Okay d4:Mirror Submirror 0:d41 State:Okay Submirror 1:d42 State:Okay Pass: 1 Read option: roundrobin(default) Write option: parallerl(default) Size:11430153 blocks d 41: Submirror of d4 State:Okay Hot spare pool: hsp001 Size: 11430153 blocks Stripe 0: Device Start Block Dbase State Hot spare C2t1d0s0 0 No Okay d 42: Submirror of d4 State:Okay Hot spare pool: hsp001 Size: 11430153 blocks Stripe 0: Device Start Block Dbase State Hot spare C3t1d0s0 0 No Okay c0t1d0s0 d5:Mirror Submirror 0:d51 State:Okay Submirror 1:d52 State:Okay Pass: 1 Read option: roundrobin(default) Write option: parallerl(default) Size:6244749 blocks d 51: Submirror of d5 State:Okay Hot spare pool: hsp001 Size: 6244749 blocks Stripe 0: Device Start Block Dbase State Hot spare C2t1d0s1 0 No Okay d 52: Submirror of d5 State:Okay Hot spare pool: hsp001 Size: 6244749 blocks Stripe 0: Device Start Block Dbase State Hot spare C3t1d0s1 0 No Maintence Hsp000: 3 hot spares C2t0d0s1 Available 2049840 blocks C2t0d0s3 Available 2049840 blocks C2t0d0s0 In use 4274640 blocks Hsp001: 2 hot spares C0t1d0s1 Available 2050461 blocks C0t1d0s0 In use 15620850 blocks 确定meta设备 d52处于维护状态，hsp001池中的hot spare处于使用中，替换了失败的d52。 D52所在的硬盘为：c3t1d0，与这共在同硬盘的还有d42。将d42与d4分离，d52与d5分离： # metadetach d4 d42 # metadetach d5 d52 二、拔出坏掉的硬盘：c3t1d0，在同一位置插入新的18G硬盘(因为没有同样大小的9G硬盘，所以，只好用18G硬盘来代替。其实，只要容量大于或等于原先硬盘容量就可以了，镜像分区是绝对不能小地，要不，恢复不了地)。 # format 0. c0t0d0 /pci@1f,4000/scsi@3/sd@0,0 1. c0t0d0 /pci@1f,4000/scsi@3/sd@1,0 2. c2t0d0 /pci@6,4000/scsi@4/sd@0,0 3. c2t1d0 /pci@6,4000/scsi@4/sd@1,0 4. c3t0d0 /pci@6,4000/scsi@4,1/sd@0,0 5. c3t1d0 /pci@6,4000/scsi@4,1/sd@1,0 因为是c3t1d0与c2t1d0做的mirror，所以，要配置新硬盘的分区与c2t1d0相同。选择3，查看分区情况 c2t1d0s0: root 5.45gb c2t1d0s1: usr 2.98gb c2t1d0s7: alternates 3.51mb 将新硬盘与原硬盘分区设置相同，然后进行下一步工作。 三、1．先把d4设备与新硬盘做连接 # metattach d4 d42 2．恢复坏掉的d5的submirror d52 # metareplace –e d5 c3t1d0s1 3．将spare设备重新放回到hot spare pool中 # metahs –e c0t1d0s0 (如果hot spare处于In Use状态，则无法释放，需要执行以下： # metareplace –e d4 c3t1d0s0 # metareplace –e d1 c3t0d0s0 四、因为更换了新的硬盘，所以，原先硬盘上的复制的库文件会丢失，应该对其进行修复。 1、 查看一下当前的复制数据库情况： # metadb –i flags first blk block count … … M p unknown unknown /dev/dsk/c3t1d0s7 2、 删除无效的数据库复制 # metadb –d –f /dev/dsk/c3t1d0s7 3、 确定一下是否被删除 # metadb –I 4、 重启之后，增加复制数据库 # metadb –a –c 2 /dev/dsk/c3t1d0s7 这样，整个的SDS的磁盘恢复算是完成了。

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