附录
说明：附录中记录的是本次操作中的一些失误，和一些容易产生错误应该多注意的地方。
1. 分区柱面交叉时建立镜像会抱错
第一次在用73硬盘更换了0号盘并分区后，因为当时的疏忽将分区的起始柱面算差，导致3个分区（ / swap s6）的柱面出现交叉，但在没有作镜像前，系统没有报错，但在与另一个73G硬盘作同步分区表及建立metadb时均报错，具体情况如下：
root@xz_netman # format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424>
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000014c33883a9,0
1. c1t1d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cfc333ff,0
Specify disk (enter its number): 0
selecting c1t0d0
[disk formatted]
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
!<cmd> - execute <cmd>, 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
!<cmd> - execute <cmd>, 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 12426 - 14074 8.00GB (1649/0/0) 16780224
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 unassigned wm 14066 - 14086 104.34MB (21/0/0) 213696
7 unassigned wm 0 0 (0/0/0) 0
partition> ^D
注：
1.此时的分区有2个地方出现交叉
a. / 分区的结束柱面与swap分区的开始柱面是相同的
b. Swap分区的结束柱面结束柱面14074 ＞ 14066（s6分区的开始柱面）
2. 同步分区表时的报错：
root@xz_netman # prtvtoc /dev/rdsk/c1t0d0s2 | fmthard -s - /dev/rdsk/c1t1d0s2
fmthard: Partition 1 overlaps partition 0. Overlap is allowed
only on partition on the full disk partition).
3．若在分区柱面交叉没有解决的情况下进行镜像则会有如下报错：
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 # metainit d12 1 1 c1t1d0s0 //d11和12没有报错是因为0号分区没有重叠柱面
d12: Concat/Stripe is setup
root@xz_netman # metainit -f d21 1 1 c1t0d0s1
metainit: xz_netman: c1t0d0s1: overlaps with device in metadevice state database
//上面这个报错信息就是在有柱面重叠的情况下，建立镜像时的报错。
解决办法：可以在单用户状态下对swap分区和s6在线（系统运行的状态）进行分区调整，而不会破坏系统，因为系统文件不在这两个分区上。一旦柱面交叉的问题解决，prtvtoc复制分区表及建立镜像就都恢复正常了。
