求助SVM RAID1换盘怪现象

kwtip

晚上在试试，谢谢各位。

119beyond

同意4楼的做法，
先拆有问题的镜像，
再更换硬盘，
然后再重新做镜像；

小耳硕鼠

正常的换盘步骤是：
1、确认换盘：
# metastat
2、拆离子镜像
# metadetach –f d0 d20
# metadetach –f d1 d21
3、删除子镜像
# metaclear d20
# metaclear d21
4、删除故障硬盘上的状态数据库副本
5、 删除故障硬盘设备，并拔出坏盘
6、 插入新硬盘，配置新磁盘，识别新盘
7、同步分区表
8、在新盘上重建状态数据库
9、 在新盘上重建子镜像
10、将新的子镜像加入镜像盘

kwtip

试过了，可以metadetach可以metaclear，但是拆完清除后metainit还是报No such file or directory，我觉的这个跟SWAP分区有关，两个盘的SWAP分区都坏了，就是D20镜像。


操作步骤

@:/root !ksh metadetach -f d6 d4
d6: submirror d4 is detached
metadetach: zwsesn001: No such file or directory

@:/root !ksh metaclear d4
d4: Concat/Stripe is cleared
metaclear: zwsesn001: No such file or directory

@:/root !ksh metainit -f d4 1 1 /dev/dsk/c2t0d0s6
metainit: zwsesn001: No such file or directory

You have new mail in /var/mail/root

@:/root !ksh newfs /dev/dsk/c2t0d0s6
newfs: construct a new file system /dev/rdsk/c2t0d0s6: (y/n)? y
Warning: 1920 sector(s) in last cylinder unallocated
/dev/rdsk/c2t0d0s6:     20494464 sectors in 3336 cylinders of 48 tracks, 128 sectors
        10007.1MB in 209 cyl groups (16 c/g, 48.00MB/g, 5824 i/g)
super-block backups (for fsck -F ufs -o b=#) at:
32, 98464, 196896, 295328, 393760, 492192, 590624, 689056, 787488, 885920,
19563424, 19661856, 19760288, 19858720, 19957152, 20055584, 20154016,
20252448, 20350880, 20449312

@:/root !ksh metainit -f d4 1 1 /dev/dsk/c2t0d0s6
metainit: zwsesn001: No such file or directory

dfck001

有时候尝试metareplace或者metasync一个submirror，两个submirror都处于need maintenance状态，这有可能是由于一个硬盘的一个block报错引起的。
1、        故障现象：
# metastat d10
d10: Mirror
Submirror 0: d0
State: Needs maintenance
Submirror 1: d1
State: Needs maintenance
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 69078879 blocks
d0: Submirror of d10
State: Needs maintenance
Invoke: after replacing "Maintenance" components:
metareplace d10 c1t0d0s0
Size: 69078879 blocks
Stripe 0:
Device     Start Block  Dbase State        Hot Spare
c1t0d0s0          0     No    Last Erred
d1: Submirror of d10
State: Needs maintenance
Invoke: metasync d10
Size: 69078879 blocks
Stripe 0:
Device     Start Block  Dbase State        Hot Spare
c1t1d0s0          0     No    Okay

在/var/adm/messages中有如下报错：
Sep 15 09:11:17 bobbob scsi: WARNING: /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f396c9,0 (ssd1):
Sep 15 09:11:17 bobbob  Error for Command: read(10)       Error Level: Retryable
Sep 15 09:11:17 bobbob scsi:    Requested Block: 4057844    Error Block: 4057969
Sep 15 09:11:17 bobbob scsi:    Vendor: SEAGATE        Serial Number: 0107D1MVCF
Sep 15 09:11:17 bobbob scsi:    Sense Key: Media Error
Sep 15 09:11:17 bobbob scsi:    ASC: 0x11 (unrecovered read error), ASCQ: 0x0, FRU: 0xe4
Sep 15 09:11:19 bobbob scsi: WARNING: /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f396c9,0 (ssd1):
Sep 15 09:11:19 bobbob  Error for Command: read(10)       Error Level: Retryable
Sep 15 09:11:19 bobbob scsi:    Requested Block: 4057844    Error Block: 4057969
Sep 15 09:11:19 bobbob scsi:    Vendor: SEAGATE    Serial Number: 0107D1MVCF
Sep 15 09:11:19 bobbob scsi:    Sense Key: Media Error
Sep 15 09:11:19 bobbob scsi:    ASC: 0x11 (unrecovered read error), ASCQ: 0x0, FRU: 0xe4

2.解决方案：
2.1 坏的block块可以通过format->analyze->read来修复
# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0
/pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f396c9,0
1. c1t1d0
/pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f8c663,0
Specify disk (enter its number): 0
selecting c1t0d0
format> analyze
analyze> read
Ready to analyze (won't harm SunOS). This takes a long time,
but is interruptable with CTRL-C. Continue? y
        pass 0
Medium error during read: block 4057969 (0x3deb71) (1404/16/101)
ASC: 0x11   ASCQ: 0x0
Sep 15 09:26:59 bobbob scsi: WARNING: /pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100002037f396c9,0 (ssd1):
Sep 15 09:26:59 bobbob  Error for Command: read(10)       Error Level: Retryable
Sep 15 09:26:59 bobbob scsi:    Requested Block: 4057969    Error Block: 4057969
Sep 15 09:26:59 bobbob scsi:    Vendor: SEAGATE     Serial Number: 0107D1MVCF
Sep 15 09:26:59 bobbob scsi:    Sense Key: Media Error
Sep 15 09:26:59 bobbob scsi:    ASC: 0x11 (unrecovered read error), ASCQ: 0x0, FRU: 0xe4
Repairing hard error on 4057969 (1404/16/101)...ok.
   24619/26/53
        pass 1
24619/26/53
Total of 1 defective blocks repaired.

2.2 运行metasync
# metasync d10

2.3 查看同步结果
# metastat d10
d10: Mirror
Submirror 0: d0
State: Needs maintenance
Submirror 1: d1
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 69078879 blocks
d0: Submirror of d10
State: Needs maintenance
Invoke: after replacing "Maintenance" components:
metareplace d10 c1t0d0s0
Size: 69078879 blocks
Stripe 0:
Device     Start Block  Dbase State        Hot Spare
c1t0d0s0          0     No    Last Erred
d1: Submirror of d10
State: Okay
Size: 69078879 blocks
Stripe 0:
Device     Start Block  Dbase State        Hot Spare
c1t1d0s0          0     No    Okay

2.4 这个时候，我们就可以执行metareplace
# metareplace -e d10 c1t0d0s0

2.5 再检查mirror情况
# metastat d10
d10: Mirror
Submirror 0: d0
State: Okay
Submirror 1: d1
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 69078879 blocks
d0: Submirror of d10
State: Okay
Size: 69078879 blocks
Stripe 0:
Device     Start Block  Dbase State        Hot Spare
c1t0d0s0          0     No    Okay
d1: Submirror of d10
State: Okay
Size: 69078879 blocks
Stripe 0:
Device     Start Block  Dbase State        Hot Spare
c1t1d0s0          0     No    Okay

kwtip

楼上的D10卷和我的D20卷状态是一样的，但是当时我没看到D22需要metasync，只看到D21需要Maintenance，然后就更换硬盘了，可能是这个原因导致D21和D22消失了，然后这两个卷是SWAP分区，我觉得无法操作跟没有SWAP分区有关。

happy_gaoxing

我遇到过，旧盘没有拆干净，最后拿磁带恢复的，13楼正解

znnnz

光盘启动，把所有镜像都拆了，彻底重做吧

zhaopingzi

楼主实在不行的话，按楼上的做吧，恢复一下system和vfstab

kwtip

如何修改system文件？
是修改下面这段吗？
* Begin MDD root info (do not edit)
rootdev:/pseudo/md@0:0,0,blk
* End MDD root info (do not edit)
修改成什么？没有改过vfstab知道怎么改。