Solaris10创建本地盘镜像

镜像规划

镜像名	源盘子镜像名	源盘分区名	镜像盘子镜像名	镜像盘分区名	挂载点
d10	d11	c1t0d0s0	d12	c1t1d0s0	/
d20	d21	c1t0d0s1	d22	c1t1d0s1	swap

state database replica存放在两块盘的slice 7上。

1. 将源盘分区表同步到镜像盘上

root@node1:/ #> prtvtoc /dev/rdsk/c1t0d0s2 | fmthard -s - /dev/rdsk/c1t1d0s2

2. 创建metadb数据库，分别存放在两块盘的slice7上

root@node1:/ #> metadb -a -c 3 -f c1t0d0s7 c1t1d0s7

root@node1:/ #> metadb -i
        flags           first blk       block count
     a        u         16              8192            /dev/dsk/c1t0d0s7
     a        u         8208            8192            /dev/dsk/c1t0d0s7
     a        u         16400           8192            /dev/dsk/c1t0d0s7
     a        u         16              8192            /dev/dsk/c1t1d0s7
     a        u         8208            8192            /dev/dsk/c1t1d0s7
     a        u         16400           8192            /dev/dsk/c1t1d0s7
r - replica does not have device relocation information
o - replica active prior to last mddb configuration change
u - replica is up to date
l - locator for this replica was read successfully
c - replica's location was in /etc/lvm/mddb.cf
p - replica's location was patched in kernel
m - replica is master, this is replica selected as input
W - replica has device write errors
a - replica is active, commits are occurring to this replica
M - replica had problem with master blocks
D - replica had problem with data blocks
F - replica had format problems
S - replica is too small to hold current data base
R - replica had device read errors

3. 创建root分区的子镜像

root@node1:/ #> metainit -f d11 1 1 c1t0d0s0
d11: Concat/Stripe is setup
root@node1:/ #> metainit -f d12 1 1 c1t1d0s0
d12: Concat/Stripe is setup

4. 创建root分区镜像

root@node1:/ #> metainit d10 -m d11
d10: Mirror is setup

5. 执行metaroot修改vfstab记录

root@node1:/ #> metaroot d10

root@node1:/ #> more /etc/vfstab
#device         device          mount           FS      fsck    mount   mount
#to mount       to fsck         point           type    pass    at boot options
#
fd      -       /dev/fd fd      -       no      -
/proc   -       /proc   proc    -       no      -
/dev/dsk/c1t0d0s1       -       -       swap    -       no      -
/dev/md/dsk/d10 /dev/md/rdsk/d10        /       ufs     1       no      -
/devices        -       /devices        devfs   -       no      -
ctfs    -       /system/contract        ctfs    -       no      -
objfs   -       /system/object  objfs   -       no      -
swap    -       /tmp    tmpfs   -       yes     -
root@node1:/ #>

6. 重启系统

root@node1:/ #> shutdown -i6 -g0 -y

Shutdown started.    Wed Nov 23 15:34:19 CST 2011

Changing to init state 6 - please wait
Broadcast Message from root (pts/1) on node1 Wed Nov 23 15:34:19...
THE SYSTEM node1 IS BEING SHUT DOWN NOW ! ! !
Log off now or risk your files being damaged

7. 创建swap的子镜像和镜像

root@node1:/ #> metainit -f d21 1 1 c1t0d0s1
d21: Concat/Stripe is setup
root@node1:/ #> metainit -f d22 1 1 c1t1d0s1
d22: Concat/Stripe is setup
root@node1:/ #> metainit d20 -m d21
d20: Mirror is setup

8. 手工修改vfstab文件

修改前：

root@node1:/ #> more /etc/vfstab
#device         device          mount           FS      fsck    mount   mount
#to mount       to fsck         point           type    pass    at boot options
#
fd      -       /dev/fd fd      -       no      -
/proc   -       /proc   proc    -       no      -
/dev/dsk/c1t0d0s1       -       -       swap    -       no      -
/dev/md/dsk/d10 /dev/md/rdsk/d10        /       ufs     1       no      -
/devices        -       /devices        devfs   -       no      -
ctfs    -       /system/contract        ctfs    -       no      -
objfs   -       /system/object  objfs   -       no      -
swap    -       /tmp    tmpfs   -       yes     -

修改后：

root@node1:/ #> more /etc/vfstab
#device         device          mount           FS      fsck    mount   mount
#to mount       to fsck         point           type    pass    at boot options
#
fd      -       /dev/fd fd      -       no      -
/proc   -       /proc   proc    -       no      -
/dev/md/dsk/d20       -       -       swap    -       no      -
/dev/md/dsk/d10 /dev/md/rdsk/d10        /       ufs     1       no      -
/devices        -       /devices        devfs   -       no      -
ctfs    -       /system/contract        ctfs    -       no      -
objfs   -       /system/object  objfs   -       no      -
swap    -       /tmp    tmpfs   -       yes     -

9. 重启系统

root@node1:/ #> shutdown -i6 -g0 -y

Shutdown started.    Wed Nov 23 15:34:19 CST 2011

Changing to init state 6 - please wait
Broadcast Message from root (pts/1) on node1 Wed Nov 23 15:34:19...
THE SYSTEM node1 IS BEING SHUT DOWN NOW ! ! !
Log off now or risk your files being damaged

10. 附加镜像盘所有分区的子镜像

root@node1:/ #> metattach d10 d12

d10: submirror d12 is attached

root@node1:/ #> metattach d20 d22

d20: submirror d22 is attached

同步在后台自动运行。可用metastat检查同步情况

root@node1:/ #> metastat
d20: Mirror
    Submirror 0: d21
      State: Okay
    Submirror 1: d22
      State: Resyncing
    Resync in progress: 69 % done
    Pass: 1
    Read option: roundrobin (default)
    Write option: parallel (default)
    Size: 16790400 blocks (8.0 GB)

d21: Submirror of d20
    State: Okay
    Size: 16790400 blocks (8.0 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t0d0s1          0     No            Okay   Yes

d22: Submirror of d20
    State: Resyncing
    Size: 16790400 blocks (8.0 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t1d0s1          0     No            Okay   Yes

d10: Mirror
    Submirror 0: d11
      State: Okay
    Submirror 1: d12
      State: Resyncing
    Resync in progress: 3 % done
    Pass: 1
    Read option: roundrobin (default)
    Write option: parallel (default)
    Size: 269684352 blocks (128 GB)

d11: Submirror of d10
    State: Okay
    Size: 269684352 blocks (128 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t0d0s0          0     No            Okay   Yes

d12: Submirror of d10
    State: Resyncing
    Size: 269684352 blocks (128 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t1d0s0          0     No            Okay   Yes

Device Relocation Information:
Device   Reloc  Device ID
c1t1d0   Yes    id1,sd@n5000cca000902554
c1t0d0   Yes    id1,sd@n5000cca0008f8bd8

11. 将set md:mirrored_root_flag = 1加入到/etc/system中。设置此参数可以使SVM启动时忽略Quorum规则，避免当Quorum<=50%时，系统无法启动到多用户模式。(SUN不建议设置此参数)