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RAID
下面的文章,你好好看看吧:
SDS SETUP
Prerequisites for Creating SVM elements:
Create Initial state database replicas.
1. metadb -a -f c0t0d0s0
2. metadb
3. metadb -a c0t1d0s0 c0t2d0s0 c0t3d0s0
Check the status of All state database replicas.
# metadb -i
Delete state database replicas.
1. metadb -d c0t0d0s0
2. metadb -d -f c0t0d0s0
Display Solaris Volume Manager Configuration
# metastat -p
RAID 0
Create a RAID 0 (Stripe) volume:
metainit d0 1 2 c0t0d0s0 c0t1d0s0 ( -i 32k ) # default is 16k
Create a RAID 0 (Concatenation) volume:
metainit d1 1 1 c0t0d0s1
metainit d2 3 1 c0t0d0s0 1 c0t1d0s0 1 c0t2d0s0
Expanding a File system by Creating a concatenation:
# umount /docs (c0t0d0s0)
# metainit d0 2 1 c0t0d0s0 1 c0t1d0s0 # have original device as the first device
# mount /dev/md/dsk/d0 /docs
# growfs -M /docs /dev/md/rdsk/d0
Expanding an Existing RAID0 volume File (Dynamic):
1. Create a concatenation stripe by attaching a sigle slice.
# metattach d2 c1t2d0s2
2. Create a concatenation stripe by adding several slices.
# metattach d2 c1t2d0s2 c1t2d1s2 c1t2d3s2
3. Growing a File system (without umount the FS)
# growfs -M /docs /dev/md/rdsk/d2
Remove a volume:
1. Umount the file system.
2. Remove the volume:
# metaclear d2
RAID 1
Create a RAID 1 volume:
1. Create a RAID 0 volume.
# metainit (-f) d0 c0t0d0s0 # -f for root FS
2. Create the mirror (one-way -->; two way) with resynchronization.
# metainit d2 -m d0
# metattach d2 d1
3. Create a two-way mirror without resynchronization.
# metainit d2 -m d0 d1
* If you are mirroring your root ( / ) file system, run "metaroot d0"
( It is same with /usr and swap mirroring. )
# metainit -f d0 1 1 c0t0d0s0
# metainit d2 -m d0
# metaroot d2 -->; auto-edit /etc/vfstab
# lockfs -fa -->; better than sync
# reboot
......
# metattach d2 d1
How to detach a submirror
# metadetach d2 d1
Place a submirror Offline and Online
# metaoffline d2 d1
# metaonline d2 d1
Change RAID 1 volume Read Policy.
# metaparam -r geometric -w serial -p 5 d30
# metaparam d30
Use a RAID 1 volume to make an online backup
# metastat
# lockfs -w /docs -->; lock
# metaoffline d2 d1
# lockfs -u /docs -->; unlock
# ufsdump ...
# metaonline d2 d1
Soft Partition
Create a Soft Partition
# metainit d20 -p c0t0d0s3 4g
or metainit d20 -e -p c0t0d0 1g (whole disk)
Expanding a Soft Partition
# mount /dev/md/dsk/d20 /docs
# metattach d20 10g
# growfs -M /docs /dev/md/rdsk/d20
RAID 5 / Hot spare
Create a RAID 5 volume
# metainit d45 -r c0t0d0s3 c0t0d0s4 c0t0d0s5
Adding a hot spare to hot spare pool.
# metahs -a hsp1 c0t0d0s7
or metahs -a all c0t0d0s7
Delete hot spare
# metahs -d hsp1 c0t0d0s7 c0t0d0s6
or metahs -d all c0t0d0s7
Associated with RAID 5 & Submirrors
# metaparam -h hsp1 d10
---------------------------------------------------------------------------
Solaris 做Raid1小结
由于系统安全性的需求,对SUN Enterprise 220R Server(2*18.2GB Dsik)做一个在Solarsi8下使的RAID1。在网上找过很多文章做指导,但是有些出入和错误的地方,有的也不一定说的出所以然来,只是做通了,写下来供大家参考。
抛砖引玉,转载请写明出处和作者,谢谢!
一、Disk分布情况:
0:c0t0d0
1:c0t1d0
注:0,1做镜像,即Raid1;
系统盘(c0t0d0)分区及镜像盘(c0t1d0)情况:
c0t0d0s0(d10) d0 c0t1d0s0(d20) / 9534M
c0t0d0s1(d11) d1 c0t1d0s1(d21) swap 2049M
c0t0d0s2 c0t1d0s2 overlap 整个盘
c0t0d0s3(d13) d3 c0t1d0s3(d23) /usr 3584M
c0t0d0s6(d16) d6 c0t1d0s6(d26) /metadb 50M
c0t0d0s7(d17) d7 c0t1d0s7(d27) /export/home 2048M
二、安装DiskSuite套件:
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。
三、镜像(root用户下进行):
1、调整第二块硬盘(c0t1d0)的文件分区表调整为和引导盘一致
#prtvtoc /dev/rdsk/c0t0d0s2|fmthard –s – /dev/rdsk/c0t1d0s2
fmthard:New volume table of contents now in place
2、准备DiskSuite使用的metadb空间
#umount /metadb **50MB小空间的用处,类似于交换空间
#rm –r /metadb
#vi /etc/vfstab
将下面这行注释掉或删除,如下:
#/dev/dsk/c0t0d0s6 /dev/rdsk/c0t0d0s6 /metadb ufs 1 yes –
3、制作Mirror
①先生成replicas,供DiskSuite内部用
#metadb –a –f –c 2 c0t0d0s7 c0t1d0s7
#metadb
②Creating a mirror from /
#metainit -f d10 1 1 c0t0d0s0
#metainit -f d20 1 1 c0t1d0s0
#metainit d0 -m d10
#metaroot d0
③Creating a mirror from swap
#metainit -f d11 1 1 c0t0d0s1
#metainit -f d21 1 1 c0t1d0s1
#metainit d1 -m d11
④Creating a mirror from /var
#metainit -f d13 1 1 c0t0d0s3
#metainit -f d23 1 1 c0t1d0s3
#metainit d3 -m d13
⑤Creating a mirror from /export/home
#metainit -f d17 1 1 c0t0d0s7
#metainit -f d27 1 1 c0t1d0s7
#metainit d7 -m d17
⑥编辑 /etc/vfstab 文件
/dev/dsk/c0t0d0s1 - - swap - no -
/dev/dsk/c0t0d0s0 /dev/rdsk/c0t0d0s0 / ufs 1 no -
/dev/dsk/c0t0d0s3 /dev/rdsk/c0t0d0s3 /var ufs 1 no -
/dev/dsk/c0t0d0s7 /dev/rdsk/c0t0d0s7 /export/home ufs 2 yes -
swap - /tmp tmpfs - yes -
更改为:
/dev/md/dsk/d1 - - swap - no -
/dev/md/dsk/d0 /dev/md/rdsk/d0 / ufs 1 no -
/dev/md/dsk/d3 /dev/md/rdsk/d3 /var ufs 1 no -
/dev/md/dsk/d7 /dev/md/rdsk/d7 /export/home ufs 2 yes -
swap - /tmp tmpfs - yes -
⑦文件系统激活
#lockfs –fa
#reboot
⑧文件系统关联
#metattach d0 d20
#metattach d1 d21
#metattach d3 d23
#metattach d7 d27
⑨查看同步状态
#metastat d0
#metastat d1
#metastat d3
#metastat d7
也可以通过DiskSuite的图形化工具查看:
#metatool
100%后,每个文件系统Status:OK,就算镜像完成。
注意:⑧步骤中的每步千万不可拆分到前面几步中分别执行,那样,在执行完一个文件系统后,后续的文件系统就不能metainit,系统提示资源被占用。
四、镜像盘的boot引导:
①启动信息
#installboot /usr/platform/`uname –i`/lib/fs/ufs/bootblk /dev/rdsk/c0t1d0s0
②修改EEPROM
推荐进入OK模式修改
#ls –l /dev/dsk/c0t0d0s0 **获得启动参数
lrwxrwxrwx 1 root root 41 Jun 14 11:08 /dev/dsk/c0t0d0s0 ->; ../../devices/pci@1f,4000/scsi@3/sd@0,0:a
#init 0
ok devalias (察看启动设备)
ok nvalias rootdisk /pci@1f,4000/scsi@3/disk@0,0
ok nvalias mirrdisk /pci@1f,4000/scsi@3/disk@1,0
ok setenv boot-device rootdisk mirrdisk disk:a
③测试
ok boot rootdisk **系统正常启动,找到启动文件
ok boot mirrdisk **系统正常启动,找到启动文件
注意:配置nvalias的时候,后面的‘disk@*,0’处,有些文档写的是‘sd@*,0’,但是经过测试,是不能正常启动的。 |
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