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[RAID与磁盘阵列] SOLRSI8下RAID1和RAID5的安装及恢复 [复制链接]

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发表于 2008-05-19 23:18 |只看该作者 |倒序浏览

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 –

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