solaris 镜像系统的硬盘扩容方案（ufsdump系统，拆镜像，分区方法）
1 背景信息介绍主机有2个36G硬盘，系统作了镜像。准备把现在的2快36G硬盘更换为2块73G硬盘。本文档就是该系统扩容实施的介绍！
3 方案实施细节 //为避免透露客户信息 对部分内容作了删减，希望对完整性不会有影响
3.1 系统健康检查
A.检查扩充部件是否与主机匹配。
B.系统健康检查
Sourcing //.profile-EIS.....
root@xz_netman
# prtdiag -v
root@xz_netman
# df -k
文件系统 千字节 用了 可用 容量 挂接在
/dev/md/dsk/d10 30241354 26590345 3348596 89% /
/proc 0 0 0 0% /proc
fd 0 0 0 0% /dev/fd
mnttab 0 0 0 0% /etc/mnttab
swap 3996568 8 3996560 1% /var/run
swap 3999968 3408 3996560 1% /tmp
root@xz_netman
# psrinfo -v
Status of processor 0 as of: 03/20/07 20:11:53
Processor has been on-line since 09/15/05 17:38:58.
The sparcv9 processor operates at 900 MHz,
and has a sparcv9 floating point processor.
Status of processor 1 as of: 03/20/07 20:11:53
Processor has been on-line since 09/15/05 17:39:00.
The sparcv9 processor operates at 900 MHz,
and has a sparcv9 floating point processor.
root@xz_netman
# format //察看当前硬盘能否正常识别及分区大小
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cfc333eb,0
1. c1t1d0
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cfc333ff,0
Specify disk (enter its number): 0
selecting c1t0d0
FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition- select (define) a partition table
current - describe the current disk
format - format and analyze the disk
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
save - save new disk/partition definitions
inquiry - show vendor, product and revision
volname - set 8-character volume name
! - execute , then return
quit
format> p
PARTITION MENU:
0 - change `0' partition
1 - change `1' partition
2 - change `2' partition
3 - change `3' partition
4 - change `4' partition
5 - change `5' partition
6 - change `6' partition
7 - change `7' partition
select - select a predefined table
modify - modify a predefined partition table
name - name the current table
print- display the current table
label- write partition map and label to the disk
! - execute , then return
quit
partition> p
Current partition table (original):
Total disk cylinders available: 24620 + 2 (reserved cylinders)
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 21266 29.30GB (21267/0/0) 61440363
1 swap wu 21267 - 24170 4.00GB (2904/0/0) 8389656
2 backup wm 0 - 24619 33.92GB (24620/0/0) 71127180
3 unassigned wm 0 0 (0/0/0) 0
4 unassigned wm 0 0 (0/0/0) 0
5 unassigned wm 0 0 (0/0/0) 0
6 unassigned wm 24171 - 24178 11.29MB (8/0/0) 23112
7 unassigned wm 0 0 (0/0/0) 0
partition> ^D
root@xz_netman
# metastat //查看镜像状态，发现子镜像d11状态不正常
d10: Mirror
Submirror 0: d11
State: Needs maintenance
Submirror 1: d12
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 61440363 blocks
d11: Submirror of d10
State: Needs maintenance
Invoke: metareplace d10 c1t0d0s0
Size: 61440363 blocks
Stripe 0:
Device Start BlockDbase State Hot Spare
c1t0d0s0 0 No Maintenance
d12: Submirror of d10
State: Okay
Size: 61440363 blocks
Stripe 0:
Device Start BlockDbase State Hot Spare
c1t1d0s0 0 No Okay
d20: Mirror
Submirror 0: d21
State: Okay
Submirror 1: d22
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 8389656 blocks
d21: Submirror of d20
State: Okay
Size: 8389656 blocks
Stripe 0:
Device Start BlockDbase State Hot Spare
c1t0d0s1 0 No Okay
d22: Submirror of d20
State: Okay
Size: 8389656 blocks
Stripe 0:
Device Start BlockDbase State Hot Spare
c1t1d0s1 0 No Okay
root@xz_netman
# cd /var/adm
root@xz_netman
# ls –l //发现message中无报错信息
总数 1332986
-rw-r--r-- 1 root root 0 2004 6月5 Xvfb.log
drwxrwxr-x 5 adm adm 512 2004 6月3 acct
-rw------- 1 uucp bin 0 2004 6月3 aculog
drwxr-xr-x 2 adm adm 512 2004 6月3 exacct
-r--r--r-- 1 root other 280563月 20 20:15 lastlog
drwxr-xr-x 2 adm adm 512 2004 6月3 log
-rw-r--r-- 1 root other 03月 18 03:10 messages
-rw-r--r-- 1 root other 03月 11 03:10 messages.0
-rw-r--r-- 1 root other 03月4 03:10 messages.1
-rw-r--r-- 1 root other 02月 25 03:10 messages.2
-rw-r--r-- 1 root other 02月 18 03:10 messages.3
drwxr-xr-x 2 adm adm 512 2004 6月3 passwd
drwxrwxr-x 2 adm sys 512 2004 6月3 sa
drwxr-xr-x 2 root sys 512 2004 6月3 sm.bin
-rw-rw-rw- 1 root bin 0 2004 6月3 spellhist
drwxr-xr-x 2 root sys 512 2004 6月3 streams
-rw------- 1 root root 94893月6 15:05 sulog
-rw-r--r-- 1 root bin 29763月 20 20:11 utmpx
-rw-r--r-- 1 root root 4628 2005 9月 15 vold.log
root@xz_netman
# metastat –t //查看子镜像发生故障的时间，发现故障发生时，正是客户开始备份时，所以怀疑是大规模的文件读写（tar文件）导致硬盘损坏。
State: Okay 2004年06月03日 d10: Mirror
Submirror 0: d11
State: Needs maintenance 2007年03月20日 星期二 18时57分55秒
Submirror 1: d12
State: Okay 2004年06月03日 星期四 19时20分26秒
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 61440363 blocks
d11: Submirror of d10
State: Needs maintenance 2007年03月20日 星期二 18时57分55秒
Invoke: metareplace d10 c1t0d0s0
Size: 61440363 blocks
Stripe 0:
Device StartDbaseState Hot SpareTime
c1t0d0s0 0No Maintenance 2007年03月20日 星期二 18时57分55秒
d12: Submirror of d10 星期四 19时20分26秒
Size: 61440363 blocks
Stripe 0:
Device StartDbaseState Hot SpareTime
c1t1d0s0 0No Okay 2004年06月03日 星期四 17时18分15秒
d20: Mirror
Submirror 0: d21
State: Okay 2004年06月03日 星期四 17时18分16秒
Submirror 1: d22
State: Okay 2004年06月03日 星期四 18时14分00秒
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 8389656 blocks
d21: Submirror of d20
State: Okay 2004年06月03日 星期四 17时18分16秒
Size: 8389656 blocks
Stripe 0:
Device StartDbaseState Hot SpareTime
c1t0d0s1 0No Okay 2004年06月03日 星期四 17时18分15秒
d22: Submirror of d20
State: Okay 2004年06月03日 星期四 18时14分00秒
Size: 8389656 blocks
Stripe 0:
Device StartDbaseState Hot SpareTime
c1t1d0s1 0No Okay 2004年06月03日 星期四 17时18分15秒
root@xz_netman
# metadb
flags first blk block count
a mpluo 16 1034 /dev/dsk/c1t0d0s6
a pluo 1050 1034 /dev/dsk/c1t0d0s6
a pluo 2084 1034 /dev/dsk/c1t0d0s6
a pluo 16 1034 /dev/dsk/c1t1d0s6
a pluo 1050 1034 /dev/dsk/c1t1d0s6
a pluo 2084 1034 /dev/dsk/c1t1d0s6
说明：通过上面的检查发现，除了d11子镜像状态不正常外系统其他项目都正常，由于d11子镜像的问题，导致原来计划需要临时改变，因为客户备份时曾在0号盘上tar文件，这可能是导致0号硬盘故障的原因，所以现在为了安全起见，不能从0号盘dump文件系统，转而要从1号盘dump文件系统。相应的操作步骤也要发生变化：要先把系统从1号盘启动，删除0号盘上的子镜像，更换0号盘，备份文件系统到号盘，从零号盘启动，更换1号盘，重新同步镜像。
拆除现有镜像
root@xz_netman
# cd /etc
root@xz_netman
# ls //下面输出有删减
LGTOuscsi nsswitch.conf
TIMEZONE nsswitch.dns
log syslog.pid
logindevperm system
lp system-INSTALL
lu tar
lvm telinit
name_to_major utmpx
name_to_sysnum uucp
nca vfstab
ncheck vfstab-INSTALL
net volcopy
netconfig vold.conf
root@xz_netman
# more vfstab-I* //确认是否为镜像前的内容
root@xz_netman
# more system-I* //确认是否为镜像前的内容
root@xz_netman
# cp vfstab vfstab.bak //备份现有的vfstab
root@xz_netman
# cp system system.bak//备份现有的system文件，供故障时还原
root@xz_netman
# more system.bak //确认备份成功
root@xz_netman
# more vfstab.bak
root@xz_netman
# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cfc333eb,0
1. c1t1d0
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cfc333ff,0
Specify disk (enter its number): ^D
root@xz_netman
# prtconf -vp|grep bootpath //查看当前启动盘为0号盘
bootpath:
'/pci@8,600000/SUNW,qlc@4/fp@0,0/disk@w21000004cfc333eb,0:a'
********************************************************************************
说明：因为当前的启动盘为0号盘，所以无法删0号盘上的故障子镜像，如果此时试图删除子镜像d11,会报一个错，如：
root@xz_netman
# metadetach d10 d11
metadetach: xz_netman: d10: attempt an operation on a submirror that has erred components
必须先把系统启动到1号盘上，在进行删除。而要想从1号盘启动系统，现有的镜像不能拆。
*******************************************************************************
root@xz_netman
# init 0
ok boot disk1
root@xz_netman#format
root@xz_netman
# prtconf -vp|grep bootpath//确认启动盘是否为1号盘
root@xz_netman
# metastat //再次确认镜像状态
root@xz_netman
# metadetach -f d10 d11
d10: submirror d11 is detached
//删除处于需要维护状态的子镜像必须加-f参数进行强制删除
root@xz_netman
# metaclear d11
d11: Concat/Stripe is cleared
root@xz_netman
# metadetach d20 d21
d20: submirror d21 is detached
root@xz_netman
# metaclear d21
d21: Concat/Stripe is cleared
root@xz_netman
# metastat //确认0号盘上的子镜像已经全部删除
注：此处把0号盘上的子镜像删除，是因为防止把1号盘上的系统dump完成后，如果0号盘子镜像不删除，在最后重新同步镜像时可能会出错。
3.3 更换硬盘并分区
root@xz_netman
# luxadm remove_device -F /dev/rdsk/c1t0d0s2//逻辑上剔出0号盘
WARNING!!! Please ensure that no filesystems are mounted on these device(s).
All data on these devices should have been backed up.
The list of devices which will be removed is:
1: Device name: /dev/rdsk/c1t0d0s2
Node WWN: 20000004cfc333eb
Device Typeisk device
Device Paths:
/dev/rdsk/c1t0d0s
Please verify the above list of devices and
then enter 'c' orto Continue or 'q' to Quit. :
stopping:/dev/rdsk/c1t0d0s2....Done
offlining: /dev/rdsk/c1t0d0s2....Done
Hitafter removing the device(s).//此时拔掉0号盘，并按回车
Device: /dev/rdsk/c1t0d0s2
Logical Nodes being removed under /dev/dsk/ and /dev/rdsk:
c1t0d0s0
c1t0d0s1
c1t0d0s2
c1t0d0s3
c1t0d0s4
c1t0d0s5
c1t0d0s6
c1t0d0s7
********************************************************************************
注：这里之所以加个-F 参数，是因为从eeprom的输出结果中看出，此时系统上记录的启动盘仍然是0号盘（Nvram中存储的，而非实际），所以一旦从逻辑上剔出0号盘时，系统会有提示要求强制 剔除 提示如下：
WARNING!!! Please ensure that no filesystems are mounted on these device(s).
All data on these devices should have been backed up.
The list of devices being used (either busy or reserved) by the host:
1: Device /dev/rdsk/c1t0d0s2
Please enter 's' orto Skip the "busy/reserved" device(s) or
'q' to Quit and run the subcommand with
-F (force) option. : s
*********************************************************************************
此时在0号槽位上插入73G的硬盘，并在系统里执行devfsadm识别该盘
root@xz_netman
# devfsadm
root@xz_netman
# format //按照1号盘的分区情况对0号盘进行分区，因为2块盘的大小比一样，所以只能手动分区 ，本次分区客户要求，6号分区50M左右，swap 8G， 剩下的空间全部留给/ ,所以分区时从6号分区开始。
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000014c33883a9,0
1. c1t1d0
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cfc333ff,0
Specify disk (enter its number): 0
selecting c1t0d0
AVAILABLE DISK SELECTIONS:
0. c1t0d0
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000014c33883a9,0
1. c1t1d0
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cfc333ff,0
Specify disk (enter its number): 0
selecting c1t0d0
FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition- select (define) a partition table
current - describe the current disk
format - format and analyze the disk
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
save - save new disk/partition definitions
inquiry - show vendor, product and revision
volname - set 8-character volume name
! - execute , then return
quit
format> p
PARTITION MENU:
0 - change `0' partition
1 - change `1' partition
2 - change `2' partition
3 - change `3' partition
4 - change `4' partition
5 - change `5' partition
6 - change `6' partition
7 - change `7' partition
select - select a predefined table
modify - modify a predefined partition table
name - name the current table
print- display the current table
label- write partition map and label to the disk
! - execute , then return
quit
partition> p
Current partition table (original):
Total disk cylinders available: 14087 + 2 (reserved cylinders)
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 25 129.19MB (26/0/0) 264576
1 swap wu 26 - 51 129.19MB (26/0/0) 264576
2 backup wu 0 - 14086 68.35GB (14087/0/0) 143349312
3 unassigned wm 0 0 (0/0/0) 0
4 unassigned wm 0 0 (0/0/0) 0
5 unassigned wm 0 0 (0/0/0) 0
6 usr wm 52 - 14086 68.10GB (14035/0/0) 142820160
7 unassigned wm 0 0 (0/0/0) 0
partition> 6
Part Tag Flag Cylinders Size Blocks
6 usr wm 52 - 14086 68.10GB (14035/0/0) 142820160
Enter partition id tag: unassigned//因为6号分区作Metadb所以不用其分区名字
Enter partition permission flags: //回车，执行默认的WM 权限
Enter new starting cyl: 14076
*******************************************************************************
注：
从上面的输出可以看出，总的柱面数是14086个，总大小为68.35G，则可以算出每个柱面大概有5M左右，则如果想给6号分区分大约50M的空间，则分配给6号分区10个左右的柱面就可以了，而6号分区的结束柱面为14086,则开始柱面选14076就可以满足需要。
*******************************************************************************
Enter partition size:
//当输入起始柱面后，系统会自动算出该分区的大小，此时按回车确认默认的大小即可。
partition> l //lable，保存对该分区的设置
Ready to label disk, continue? y
partition> 6 //查看分区是否成功
Part Tag Flag Cylinders Size Blocks
6 unassigned wm 14076 - 14086 54.66MB (11/0/0) 111936
*****************************************************************************
注：
1. 其实，采用这种分区如果想达到比较精确的分区空间，我们可以采取下面的方法，比如我们想要给6号分区分50M的空间，那在估算出每个柱面的大小后（大约5M左右），先尝试把6号分区的起始柱面设为14076（大概是10个柱面的空间），则我们会在下一步中看到此时的6号分区的空间（54.66mb）,发现比我们想要的空间要大了4m,则我们在下一步不保存当前设置即可（不输入label），之后重新对6号分区进行设置，把其实柱面在增大一个如：1477,再观察此时6号分区的大小，如果合适则保存，如果不合适则继续更改起始柱面，经过几次的尝试就可以得到比较精确的空间了。当空间大小合适后，输入label 保存设置即可。
2. 另外，采用这种倒着分区（从6号分区开始分区）方式进行分区时，一定要计算好起始柱面，在这里经常犯的错误是“顺序颠倒”的错误，比如6号分区起始柱面为14076，由于计算疏忽1号分区的结束柱面确为14078，这样就会出现柱面交叉，不过如果是单盘，即使出现柱面交叉，系统也不会抱错，但如果要作镜像，那么在建立子镜像和设立metadb时都回报错，具体情况会在附录中详细介绍
***********************************************************************
partition> 1
Part Tag Flag Cylinders Size Blocks
1 swap wu 26 - 51 129.19MB (26/0/0) 264576
Enter partition id tag: //回车，采取默认即可
Enter partition permission flags: //回车，采取默认即可
Enter new starting cyl: 12427 //因为6号分区的起始柱面为14076，而7号，5号，3号和4号分区的空间又为0，所以1号分区的结束柱面为14075（而非14077，此处一定注意不要犯“颠倒顺序”的错误）而1号分区要8G的空间，大概就是1648个柱面，则1号分区的起始柱面该是12427。
Enter partition size:
//空间大小差不多，则按回车确认默认的空间大小即可
partition> l //保存
Ready to label disk, continue? y
根分区类似，这里不再详述。
root@xz_netman
# format //确认分区
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000014c33883a9,0
1. c1t1d0
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cfc333ff,0
Specify disk (enter its number): 0
selecting c1t0d0
FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition- select (define) a partition table
current - describe the current disk
format - format and analyze the disk
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
save - save new disk/partition definitions
inquiry - show vendor, product and revision
volname - set 8-character volume name
! - execute , then return
quit
format> p
PARTITION MENU:
0 - change `0' partition
1 - change `1' partition
2 - change `2' partition
3 - change `3' partition
4 - change `4' partition
5 - change `5' partition
6 - change `6' partition
7 - change `7' partition
select - select a predefined table
modify - modify a predefined partition table
name - name the current table
print- display the current table
label- write partition map and label to the disk
! - execute , then return
quit
partition> p
Current partition table (original):
Total disk cylinders available: 14087 + 2 (reserved cylinders)
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 12426 60.30GB (12427/0/0) 126457152
1 swap wu 12427 - 14075 8.00GB (1649/0/0) 16780224
2 backup wu 0 - 14086 68.35GB (14087/0/0) 143349312
3 unassigned wu 0 0 (0/0/0) 0
4 unassigned wu 0 0 (0/0/0) 0
5 unassigned wu 0 0 (0/0/0) 0
6 unassigned wm 14076 - 14086 54.66MB (11/0/0) 111936
7 unassigned wu 0 0 (0/0/0) 0
3.4 备份文件系统
root@xz_netman
# newfs /dev/rdsk/c1t0d0s0
newfs: construct a new file system /dev/rdsk/c1t0d0s0: (y/n)? y
/dev/rdsk/c1t0d0s0: 126457152 sectors in 12427 cylinders of 24 tracks, 424 sectors 61746.7MB in 1243 cyl groups (10 c/g, 49.69MB/g, 6016 i/g)
超块 (fsck -F ufs -o b=#) 备份在：
32, 102224, 204416, 306608, 408800, 510992, 613184, 715376, 817568, 919760,
1021952, 1124144, 1226336, 1328528, 1430720, 1532912, 1635104, 1737296,
1839488, 1941680, 2043872, 2146064, 2248256, 2350448, 2452640, 2554832,
2657024, 2759216, 2861408, 2963600, 3065792, 3167984, 3256352, 3358544,
……………………………………………………………………………………….
…………………………………………………………………………………………
root@xz_netman
# mount /dev/dsk/c1t0d0s0 /mnt
root@xz_netman
# ufsdump 0uf - /dev/dsk/c1t1d0s0 |(cd /mnt ; ufsrestore rf - )
DUMP: 写入 32 千字节记录
DUMP: 本级 0 日期转储：2007年03月21日 星期三 00时17分30秒
DUMP: 上一级 0 日期转储：纪元
DUMP: 转储 /dev/rdsk/c1t1d0s0 到 标准输出。
DUMP: 映射(传送 I) [规则文件]
DUMP: 映射 (传送 II) [目录]
DUMP: 估计 46914800 块 (22907.62MB)。
DUMP: 转储(传送 III) [目录]
DUMP: 转储(传送 IV) [规则文件]
Warning: ./lost+found: File exists
Mar 21 00:29:06 xz_netman login: ROOT LOGIN /dev/pts/2 FROM 10.97.60.200
DUMP: 0.22% 完成，在 112:10 完成
Mar 21 00:33:23 xz_netman last message repeated 2 times
DUMP: 3.98% 完成，在 9:54 完成
DUMP: 17.06% 完成，在 2:48 完成
Mar 21 00:57:13 xz_netman login: ROOT LOGIN /dev/pts/2 FROM 10.97.60.25
DUMP: 46.56% 完成，在 0:51 完成
DUMP: 59.46% 完成，在 0:37 完成
DUMP: 67.04% 完成，在 0:31 完成
DUMP: 73.55% 完成，在 0:26 完成
DUMP: 75.49% 完成，在 0:27 完成
DUMP: 87.37% 完成，在 0:13 完成
DUMP: 95.01% 完成，在 0:05 完成
DUMP: 在 1 卷上的 46915966 块 (22908.19MB)速率是 3602 KB/sec
DUMP: 转储已完成
DUMP: 2007年03月21日 星期三 00时17分30秒 上的 0 级转储
root@xz_netman
# ps -ef |grep ufsdump
root4865 3060 02:07:40 console0:00 grep ufsdump
3.5 安装启动块及刷新启动盘WWN
根文件系统备份完成后，要进入单用户在启动盘的0号分区安装启动块，并刷新WWN
root@xz_netman
# cd /etc
root@xz_netman
# more vfstab
#device device mount FS fsck mount mount
#to mount to fsck point type pass at boot options
#
#/dev/dsk/c1d0s2 /dev/rdsk/c1d0s2 /usr ufs 1 yes -
fd - /dev/fd fd - no -
/proc - /proc proc - no -
/dev/dsk/c1t0d0s1 - - swap - no -
/dev/dsk/c1t0d0s0 /dev/rdsk/c1t0d0s0 / ufs 1 no
-
swap - /tmp tmpfs - yes -
root@xz_netman
# more vfstab－INSTALL
#device device mount FS fsck mount mount
#to mount to fsck point type pass at boot options
#
#/dev/dsk/c1d0s2 /dev/rdsk/c1d0s2 /usr ufs 1 yes -
fd - /dev/fd fd - no -
/proc - /proc proc - no -
/dev/dsk/ c1t0d0s1 - - swap - no -
#/dev/dsk/c1t0d0s1 - - swap - no -
/dev/dsk/d10 /dev/rdsk/ c1t0d0s0 / ufs 1 no logging
swap - /tmp tmpfs - yes -
root@xz_netman
# cp vfstab-I*vfstab//将现在的vfstab文件还原为镜像前的状态
root@xz_netman
# more vfstab //确认还原成功
root@xz_netman
# TERM=vt100;export TERM
root@xz_netman
# vi system //将 rootdev:/pseudo/md@0:0,10,blk 项注释掉
******************************************************************************
注：因为从1号盘把系统备份到0号盘时，1号盘上的镜像还没有拆除，所以备份完成后，此时的0号盘上还是“镜像状态”，为了下面从0号盘单盘启动正常，必须把镜像彻底拆除。
******************************************************************************
root@xz_netman
# cd /mnt
root@xz_netman
# rm restoresymtable
root@xz_netman
# cd
root@xz_netman
# umount /mnt
root@xz_netman
# init 0
root@xz_netman
#
INIT: New run level: 0
The system is coming down.Please wait.
System services are now being stopped.
stopping NetWorker daemons:
nsr_shutdown -a –q
打印服务已停止。
Mar 21 02:12:41 xz_netman syslogd: going down on signal 15
+4h43m30s Alarm 3 ON
The system is down.
syncing file systems... done
Program terminated
{0} ok boot cdrom -s
Boot device: /pci@8,700000/scsi@6/disk@6,0:fFile and args: -s
SunOS Release 5.8 Version Generic_108528-22 64-bit
Copyright 1983-2003 Sun Microsystems, Inc.All rights reserved.
Configuring /dev and /devices
Using RPC Bootparams for network configuration information.
Skipping interface fcip0
SUNW,hme0 : No response from Ethernet network : Link down -- cable problem?
Skipping interface hme0
Skipping interface eri0
\
INIT: SINGLE USER MODE
# cd /usr/platform/sun4u/lib/fs/ufs
# installboot bootblk /dev/rdsk/c1t0d0s0 //安装启动块
# mount /dev/dsk/c1t0d0s0 /a
# drvconfig -r /a -p /a/etc/path_to_inst
# cd /devices
# find . -print | cpio -pduVm /a/devices
..................................................
..................................................
..................................................
..................................................
..................................................
..................................................
..............................
0 blocks
# disks -r /a
# devlinks -r /a
# luxadm set_boot_dev /dev/dsk/c1t0d0s0
Do you want to change boot-device to the new setting? (y/n) y
root@xz_netman
# reboot - - -r //此处之所以要加-r 参数 是要系统重新识别一下这个0号盘，不然如果直接boot会有报错，具体信息见附件
syncing file systems... done
rebooting...
R
LOM event: +5h34m29s host reset
screen not found.
keyboard not found.
Keyboard not present.Using lom-console for input and output.
Sun Netra T4 (2 X UltraSPARC-III+) , No Keyboard
Copyright 1998-2002 Sun Microsystems, Inc.All rights reserved.
OpenBoot 4.5, 2048 MB memory installed, Serial #52968011.
Ethernet address 0:3:ba:28:3a:4b, Host ID: 83283a4b.
Rebooting with command: boot -r
Boot device: /pci@8,600000/SUNW,qlc@4/fp@0,0/disk@w21000014c33883a9,0:aFile and args: -r
SunOS Release 5.8 Version Generic_108528-19 64-bit
Copyright 1983-2001 Sun Microsystems, Inc.All rights reserved.
Sourcing //.profile-EIS.....
root@xz_netman
#
root@xz_netman
# metastat //因为6号分区没有备份，所以metadb也就不存在
metastat: xz_netman: there are no existing databases
root@xz_netman
#cd
root@xz_netman
#mkdir
root@xz_netman
#prtdiag –v
root@xz_netman
#rm
root@xz_netman
#su
root@xz_netman
#df –k
注：以上是对备份的系统是否正常的检查，此时要求客户启动业务，查看应用是否正常，若应用正常，则可以确定本次系统dump成功，可以更换另一个盘，并重新镜像。
3.6 更换1号盘并重新同步镜像
root@xz_netman
# luxadm remove_device /dev/rdsk/c1t1d0s2
WARNING!!! Please ensure that no filesystems are mounted on these device(s).
All data on these devices should have been backed up.
The list of devices which will be removed is:
1: Device name: /dev/rdsk/c1t1d0s2
Node WWN: 20000004cfc333ff
Device Typeisk device
Device Paths:
/dev/rdsk/c1t1d0s2
Please verify the above list of devices and
then enter 'c' orto Continue or 'q' to Quit. : c
stopping:/dev/rdsk/c1t1d0s2....Done
offlining: /dev/rdsk/c1t1d0s2....Done
Hitafter removing the device(s).
Device: /dev/rdsk/c1t1d0s2
Logical Nodes being removed under /dev/dsk/ and /dev/rdsk:
c1t1d0s0
c1t1d0s1
c1t1d0s2
c1t1d0s3
c1t1d0s4
c1t1d0s5
c1t1d0s6
c1t1d0s7
root@xz_netman
# devfsadm
root@xz_netman
# format //确认识别正常
root@xz_netman
# prtvtoc /dev/rdsk/c1t0d0s2|fmthard -s - /dev/rdsk/c1t1d0s2
fmthard:New volume table of contents now in place.
root@xz_netman
# format //确认
root@xz_netman
# metadb -afc 3 c1t0d0s6
root@xz_netman
# metadb -afc 3 c1t1d0s6
root@xz_netman
# metainit -f d11 1 1 c1t0d0s0
d11: Concat/Stripe is setup
root@xz_netman
# metainitd1211c1t1d0s0
d12: Concat/Stripe is setup
root@xz_netman
# metainit -f d21 1 1 c1t0d0s1
d21: Concat/Stripe is setup
root@xz_netman
# metainit d22 1 1 c1t1d0s1
d22: Concat/Stripe is setup
root@xz_netman
# metainit d10 -m d11
d10: Mirror is setup
root@xz_netman
# metainit d20 -m d21
d20: Mirror is setup
root@xz_netman
# metaroot d10
root@xz_netman
# lockfs -fa
root@xz_netman
# cd /etc
root@xz_netman
# TERM=vt100;export TERM
root@xz_netman
# vi vfstab
root@xz_netman
# vi system
root@xz_netman
# sync
root@xz_netman
# sync
root@xz_netman
# shutdown -y -i6 -g0
root@xz_netman
# metattach d10 d12
d10: submirror d12 is attached
root@xz_netman
# metattach d20 d22
d20: submirror d22 is attached
root@xz_netman
# metastat
root@xz_netman
# eeprom boot-device="disk disk1"
root@xz_netman
# dumpadm -d /dev/md/dsk/d20
Dump content: kernel pages
Dump device: /dev/md/dsk/d20 (swap)
Savecore directory: /var/crash/nj_netman
Savecore enabled: yes
root@xz_netman
# metastat|grep %
Resync in progress: 0 % done
Resync in progress: 2 % done
本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/28815/showart_294206.html
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