安装DiskSuite_4.2.1软件及相关补丁
以下以实力的方式介绍“引导盘镜像操作”
例子中操作系统分区定义如下：
c0t0d0s0 /
c0t0d0s1 swap
c0t0d0s3 /var
c0t0d0s4 (metaDB*3)
c0t0d0s5 /opt
c0t0d0s6 /usr
c0t0d0s7 /export/home
用root用户登陆
运行以下命令：
# prtvtoc /dev/rdsk/c0t0d0s2 > boot-vtoc.tab
# fmthard -s boot-vtoc.tab /dev/rdsk/c0t1d0s2
以上命令将第2硬盘的文件分区表调整为和引导盘一致
运行以下命令：
# metadb -afc 3 c0t0d0s4
# metadb -afc 3 c0t1d0s4
# metainit -f d21 1 1 c0t0d0s0
# metainit d22 1 1 c0t1d0s0
# metainit -f d24 1 1 c0t0d0s1
# metainit d25 1 1 c0t1d0s1
# metainit -f d27 1 1 c0t0d0s3
# metainit d28 1 1 c0t1d0s3
# metainit -f d31 1 1 c0t0d0s5
# metainit d32 1 1 c0t1d0s5
# metainit -f d34 1 1 c0t0d0s6
# metainit d35 1 1 c0t1d0s6
# metainit -f d37 1 1 c0t0d0s7
# metainit d38 1 1 c0t1d0s7
# metainit d20 -m d21
# metainit d23 -m d24
# metainit d26 -m d27
# metainit d30 -m d31
# metainit d33 -m d34
# metainit d36 -m d37
# metaroot d20
# lockfs -fa
修改/etc/vfstab文件为如下：
#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/c0t0d0s3 - - swap - no -
/dev/md/dsk/d26 - - swap - no -
#/dev/dsk/c0t0d0s0 /dev/rdsk/c0t0d0s0 / ufs 1 no -
/dev/md/dsk/d20 /dev/md/rdsk/d20 / ufs 1 no -
#/dev/dsk/c0t0d0s6 /dev/rdsk/c0t0d0s6 /usr ufs 1 no -
/dev/md/dsk/d33 /dev/md/rdsk/d33 /usr ufs 1 no -
#/dev/dsk/c0t0d0s1 /dev/rdsk/c0t0d0s1 /var ufs 1 no -
/dev/md/dsk/d23 /dev/md/rdsk/d23 /var ufs 1 no -
#/dev/dsk/c0t0d0s7 /dev/rdsk/c0t0d0s7 /export/home ufs 2 yes -
/dev/md/dsk/d36 /dev/md/rdsk/d36 /export/home ufs 2 yes -
#/dev/dsk/c0t0d0s5 /dev/rdsk/c0t0d0s5 /opt ufs 2 yes -
/dev/md/dsk/d30 /dev/md/rdsk/d30 /opt ufs 2 yes -
swap - /tmp tmpfs - yes -
至此，引导盘镜像操作的第一步完成
运行以下命令重新引导操作系统
# sync
# sync
# sync
# reboot
做数据同步
# metattach d20 d22
# metattach d23 d25
# metattach d26 d28
# metattach d30 d32
# metattach d33 d35
# metattach d36 d38
以上步骤执行时间较长
主引导盘损坏的恢复（主引导盘为c0t0d0）
删除损坏的replicas
# metadb -i #查看状态
# metadb -d c0t0d0s4 #删除replicas
停机，换盘
# sync
# sync
# init 5
从备用盘引导系统(使用Stop+A 使系统进入ok状态)
ok boot disk1
设置新盘分区
# prtvtoc /dev/rdsk/c0t1d0s2 > boot-vtoc.tab
# fmthard -f boot-vtoc.tab /dev/rdsk/c0t0d0s2
再创建replicas
# metadb -afc 3 c0t0d0s4
重连接新设备到主mirror，并同步
# metareplace -e d20 c0t0d0s0
d20: device c0t0d0s0 is enabled
# metareplace -e d23 c0t0d0s1
d20: device c0t0d0s1 is enabled
# metareplace -e d26 c0t0d0s3
d20: device c0t0d0s3 is enabled
# metareplace -e d30 c0t0d0s5
d20: device c0t0d0s5 is enabled
# metareplace -e d33 c0t0d0s6
d20: device c0t0d0s6 is enabled
# metareplace -e d36 c0t0d0s7
d20: device c0t0d0s7 is enabled
以上步骤执行时间较长
好，我就搞个
raid 0 +1
metainit d1 1 3 c0t1d0s0 c0t2d0s0 c0t3d0s0
metainit d2 1 3 c0t4d0s0 c0t5d0s0 c0t6d0s0
# metainit d0 -m d1
# metattach d0 d2
raid 1 +0
metainit d1 3 1 c0t1d0s0 1 c0t2d0s0 1 c0t3d0s0
metainit d2 3 1 c0t4d0s0 1 c0t5d0s0 1 c0t6d0s0
# metainit d0 -m d1
# metattach d0 d2
raid 5比较简单
# metainit d0 -r 1 6 c0t1d0s0 1 c0t2d0s0 1 c0t3d0s0 c0t4d0s0 1 c0t5d0s0 1 c0t6d0s0
Stripe
This example shows a metadevice, /dev/md/dsk/d15, consisting of two slices.
# metainit d15 1 2 c0t1d0s2 c0t2d0s2 -i 32k
The number 1 indicates that one stripe is being created.
Because the stripe is made of two slices, the number 2 fol-
lows next. The optional -i followed by 32k specifIEs the
interlace size as 32 Kbytes. If the interlace size were not
specified, the stripe would use the default value of 16
Kbytes.
本楼文章来自man metainit.试译如下：
条带（raid 0)
这个例子显示了由两个分区组成的raid0硬盘设备： /dev/md/dsk/d15。
命令是：metainit d15 1 2 c0t1d0s2 c0t2d0s2 -i 32k
数字1表示一个条带区被创建。数字2表示这个条带由两个磁盘分区组成。
选项-i和紧跟的32k，表示条带在磁盘上使用时是以32k为单位。不加此选项则系统会使用缺省的16k为单位。
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