SOLRSI8下RAID1和RAID5的安装及恢复
Disk分布情况：0:c1t0d0
1:c1t1d0
2:c1t2d0
3:c1t3d0
4:c1t4d0
5:c1t5d0
注：0,1做镜像；2，3，4，5做RAID5
系统盘(c1t0d0)分区及镜像盘(c1t1d0)情况：
c1t0d0s0(d10) d0 c1t1d0s0(d20) / 1024M
c1t0d0s1(d11) d1 c1t1d0s1(d21) swap 8192M
c1t0d0s2
c1t1d0s2 overlap 69999M
c1t0d0s3(d13) d3 c1t1d0s3(d23) /usr 4096M
c1t0d0s4(d14) d4 c1t1d0s4(d24) /opt 10240M
c1t0d0s5(d15) d5 c1t1d0s5(d25) /var 2048M
c1t0d0s6(d16) d6 c1t1d0s6(d26) /home free
c1t0d0s7
c1t1d0s7 /metaDB 30M
系统安装完成后，使用Solarsi8 software 2 of 2安装DiskSuite_4.2.1软件，安装路径：/cdrom/cdrom0/Solaris_8/EA/installer & 选择默认安装就可以。
用root用户登陆,运行以下命令：
#prtvtoc /dev/rdsk/c1t0d0s2|fmthard ?s ? /dev/rdsk/c1t1d0s2
fmthard:New volume table of contents now in place
上面命令将第二块硬盘(c1t1d0)的文件分区表调整为和引导盘一致。
#umount /metaDB
#rm ?r /metaDB
#vi /etc/vfstab
将下面这行注释掉或删除,如下：
#/dev/dsk/c1t0d0s7 /dev/rdsk/c1t0d0s7 /metaDB ufs 1 yes ?
一、RAID1
对各个分区逐一作镜像：
①先生成replicas,这是DiskSuite内部用的。
#metadb ?a ?f ?c 3 c1t0d0s7 c1t1d0s7
#metadb
②Creating a mirror from swap
#metainit ?f d11 1 1 c1t0d0s1
#metainit d21 1 1 c1t1t0s1
#metainit d1 ?m d11
#vi /etc/vfstab
/dev/dsk/c1t0d0s1 - - swap ? no ?
should be changed to:
/dev/md/dsk/d1 - - swap ? no -
#reboot
#metattach d1 d21
③Creating a mirror from /usr
#metainit ?f d13 1 1 c1t0d0s3
#metainit d23 1 1 c1t1t0s3
#metainit d3 ?m d13
#vi /etc/vfstab
/dev/dsk/c1t0d0s3 /dev/rdsk/c1t0d0s3 /usr ufs 1 yes ?
should be changed to:
/dev/md/dsk/d3 /dev/md/rdsk/d3 /usr ufs 1 yes ?
#reboot
#metattach d3 d23
④Creating a mirror from /opt
#metainit ?f d14 1 1 c1t0d0s4
#metainit d24 1 1 c1t1t0s4
#metainit d4 ?m d14
#vi /etc/vfstab
/dev/dsk/c1t0d0s4 /dev/rdsk/c1t0d0s4 /opt ufs 1 yes ?
should be changed to:
/dev/md/dsk/d4 /dev/md/rdsk/d4 /opt ufs 1 yes ?
#reboot
#metattach d4 d24
⑤Creating a mirror from /var
#metainit ?f d15 1 1 c1t0d0s5
#metainit d25 1 1 c1t1t0s5
#metainit d5 ?m d15
#vi /etc/vfstab
/dev/dsk/c1t0d0s5 /dev/rdsk/c1t0d0s5 /var ufs 1 yes ?
should be changed to:
/dev/md/dsk/d5 /dev/md/rdsk/d5 /var ufs 1 yes ?
#reboot
#metattach d5 d25
⑥Creating a mirror from /home
#metainit ?f d16 1 1 c1t0d0s6
#metainit d26 1 1 c1t1t0s6
#metainit d6 ?m d16
#vi /etc/vfstab
/dev/dsk/c1t0d0s6 /dev/rdsk/c1t0d0s6 /home ufs 1 yes ?
should be changed to:
/dev/md/dsk/d6 /dev/md/rdsk/d6 /home ufs 1 yes ?
#reboot
#metattach d6 d26
⑦Creating a mirror from /
#metainit ?f d10 1 1 c1t0d0s0
#metainit d20 1 1 c1t1t0s0
#metainit d0 ?m d10
#metaroot d0
#lockfs ?fa
#reboot
#metattach d0 d20
#metastat (检查镜像进度)
镜像完成后，还需作如下操作：
修改EEPROM
ok devalias（察看启动设备）
ok nvalias rootdisk /pci@8,600000/SUNW,qlc@4/fp@0,0/disk@0,0
ok nvalias mirrdisk /pci@8,600000/SUNW,qlc@4/fp@0,0/disk@1,0
ok setenv boot-device rootdisk mirrdisk
eeprom命令：
boot-device=rootdisk mirrdisk
boot-device=rootdisk mirrdisk
use-nvramrc?=true
nvramrc=devalias mirrdisk /pci@8,600000/SUNW,qlc@4/fp@0,0/disk@1,0
devalias rootdisk /pci@8,600000/SUNW,qlc@4/fp@0,0/disk@0,0
#ls -l c1t0d0s0
lrwxrwxrwx 1 root root 70 1月 2 10:45 c1t0d0s0 -> ../../devices/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000000870e80e7,0:a
对应：/pci@8,600000/SUNW,qlc@4/fp@0,0/disk@0,0
root@voiplnjvr4 # ls -l c1t1d0s0
lrwxrwxrwx 1 root root 70 1月 2 10:45 c1t1d0s0 -> ../../devices/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000000870fb287,0:a
对应：/pci@8,600000/SUNW,qlc@4/fp@0,0/disk@1,0
测试：
ok boot rootdisk 系统启动正常。
ok boot mirrordisk 系统启动正常。
假如c1t0d0盘坏掉，则停机更换硬盘后需做恢复工作，如下；
ok boot mirrordisk -s
#metadb -d c1t0d0s7
#prtvtoc /dev/rdsk/c1t1d0s2|fmthard ?s ? /dev/rdsk/c1t0d0s2
#metadb ?a ?f ?c 3 c1t0d0s7
#halt
ok boot mirrordisk
#metareplace -e d0 c1t0d0s0
d0: device c1t0d0s0 is enabled
#metareplace -e d1 c1t0d0s1
d1: device c1t0d0s1 is enabled
#metareplace -e d3 c1t0d0s3
d3: device c1t0d0s3 is enabled
#metareplace -e d4 c1t0d0s4
d4: device c1t0d0s4 is enabled
#metareplace -e d5 c1t0d0s5
d5: device c1t0d0s5 is enabled
#metareplace -e d6 c1t0d0s6
d6: device c1t0d0s6 is enabled
#metastat (检查镜像恢复进度)
二、RAID5
#metainit d55 ?r c1t2d0s2 c1t3d0s2 c1t4d0s2 c1t5d0s2
#metastat d55 (检查RAID5的进度)
作完后reboot
#newfs /dev/md/rdsk/d55
#mkdir /raid5
#vi /etc/vfstab
添加一行：
/dev/md/dsk/d55 /dev/md/rdsk/d55 /raid5 ufs 2 yes ?
#reboot
RAID5坏掉一个盘的恢复方法：
例c1t4d0盘坏掉，更换坏硬盘后作如下工作：
ok boot -r
#metareplace ?e d55 c1t4d0s2
#metastat d55
卸去RAID5的方法：
#umount /raid5
#metaclear d55
#vi /etc/vfstab
注释此行：
#/dev/md/dsk/d55 /dev/md/rdsk/d55 /raid5 ufs 2 yes ?
