好吃懒做
分类：
2008-04-11 11:51:19
Windwos的raid玩了不少，今天玩哈Solaris简单的raid。唉！不经意间又多了些口水。共4块盘 分别是c1t0d0s2、c1t1d0s2、c1t2d0s2、c1t3d0s2，其中c1t0d0s2、c1t1d0s2做系统盘RAID 1，c1t2d0s2、c1t3d0s2做数据盘RAID 1 。
1. 先做c1t0d0s2、c1t1d0s2，其中c1t0d0s2的分区如下：
0 / 20481
1 swap 16386 8192
2 overlap 139989
3 /usr 15363
4 /var 20481
5 /opt 15363
6 /app 51853 60047
7 59
这里说明下分区c1t0d0s7 空间59MB，用作metadb（个人喜好最多给个100MB，好奢侈啊）一般用最后一个分区做metadatebases
2. 再做c1t2d0s2、c1t3d0s2，其中c1t2d0s2的分区如下：为啥只做c1t2d0s2，唉…..因为c1t2d0s2没分区啊！至少咱弄个metadb出来啊。
partition> m
Select partitioning base:
0. Current partition table (unnamed)
1. All Free Hog
Choose base (enter number) [0]? 1
partition> m
Select partitioning base:
0. Current partition table (a)
1. All Free Hog
Choose base (enter number) [0]? 1
Part Tag Flag Cylinders Size Blocks
0 root wm 0 0 (0/0/0) 0
1 swap wu 0 0 (0/0/0) 0
2 backup wu 0 - 14086 136.71GB (14087/0/0) 286698624
3 unassigned wm 0 0 (0/0/0) 0
4 unassigned wm 0 0 (0/0/0) 0
5 unassigned wm 0 0 (0/0/0) 0
6 usr wm 0 0 (0/0/0) 0
7 unassigned wm 0 0 (0/0/0) 0
Do you wish to continue creating a new partition
table based on above table[yes]?
Free Hog partition[6]? 7
Enter size of partition '0' [0b,
Enter size of partition '1' [0b,
Enter size of partition '3' [0b,
Enter size of partition '4' [0b,
Enter size of partition '5' [0b,
Enter size of partition '6' [0b,
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 14079 136.64GB (14080/0/0) 286556160
1 swap wu 0 0 (0/0/0) 0
2 backup wu 0 - 14086 136.71GB (14087/0/0) 286698624
3 unassigned wm 0 0 (0/0/0) 0
4 unassigned wm 0 0 (0/0/0) 0
5 unassigned wm 0 0 (0/0/0) 0
6 usr wm 0 0 (0/0/0) 0
7 unassigned wm 14080 - 14086 69.56MB (7/0/0) 142464
Okay to make this the current partition table[yes]?
Enter table name (remember quotes): a
Ready to label disk, continue? y
partition> disk
`disk' is not expected.
partition> q
3. 接着规划并执行4块盘的镜像表
metainit -f d11 1
metainit -f d12 1
metainit -f d21 1
metainit -f d22 1
metainit -f d31 1
metainit -f d32 1
metainit -f d41 1
metainit -f d42 1
metainit -f d51 1
metainit -f d52 1
metainit -f d61 1
metainit -f d62 1
解释：metainit d11…..d62分别初始化设备
上面的步骤都准备好了，开始安装吧 ：）
4. prtvtoc /dev/rdsk/c1t0d0s2 | fmthard -s - /dev/rdsk/c1t1d0s2
prtvtoc /dev/rdsk/c1t2d0s2 | fmthard -s - /dev/rdsk/c1t3d0s2
将t0盘分区拷贝t1盘。 t2盘分区拷贝t3盘
因为metadevices是工作在块级别的，所以两个磁盘必须所有物理信息一致（几何匹配）。
5. 创建metadb
metadb -afc
metadb -afc
metadb -afc
metadb -afc
解释下：在每个分片上建立3个meta-database,-a 添加，-c 2 数量为3个，-f是第一次建metadb必须的参数，如果有多个disks,可以把数据库分布在多个磁盘上以获得更好的性能和故障冗余
查看刚才做的步骤：# metadb
flags first blk block count
a m p luo 16 8192 /dev/dsk/c1t0d0s7
a p luo 8208 8192 /dev/dsk/c1t0d0s7
a p luo 16400 8192 /dev/dsk/c1t0d0s7
a p luo 16 8192 /dev/dsk/c1t1d0s7
a p luo 8208 8192 /dev/dsk/c1t1d0s7
a p luo 16400 8192 /dev/dsk/c1t1d0s7
a p luo 16 8192 /dev/dsk/c1t2d0s7
a p luo 8208 8192 /dev/dsk/c1t2d0s7
a p luo 16400 8192 /dev/dsk/c1t2d0s7
a p luo 16 8192 /dev/dsk/c1t3d0s7
a p luo 8208 8192 /dev/dsk/c1t3d0s7
a p luo 16400 8192 /dev/dsk/c1t3d0s7
我靠！每个分区上还真的建了3份（-afc3），犹豫啥？往下走噻。。。。。。。。
6. 执行4块盘初始化
metainit -f d11 1
metainit -f d12 1
metainit -f d21 1
metainit -f d22 1
metainit -f d31 1
metainit -f d32 1
metainit -f d41 1
metainit -f d42 1
metainit -f d51 1
metainit -f d52 1
metainit -f d61 1
metainit -f d62 1
解释：metainit d11…..d62分别初始化设备
7. 把disk0和disk1，disk2和disk3结合在一起。建立以下的镜像设备和成员（d10表示slice0的raid-device,d11表示d10的成员1）：
metainit d10 -m d11
metainit d20 -m d21
metainit d30 -m d31
metainit d40 -m d41
metainit d50 -m d51
metainit d60 -m d61
做完上述配置后，镜像已经单项匹配了disk0即c1t0d0s2
8.做完步骤“
# metastat | more
d60: Mirror “1.这里已经mirror了
Submirror 0: d61 “2.子镜像d61
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 286556160 blocks (136 GB)
d61: Submirror of d60 “3.d61包含在d60里，状态OKAY
State: Okay
Size: 286556160 blocks (136 GB)
Stripe 0:
Device Start Block Dbase State Reloc Hot Spare
c1t2d0s0 0 No Okay Yes
d50: Mirror
Submirror 0: d51
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 76808448 blocks (36 GB)
d51: Submirror of d50
State: Okay
Size: 76808448 blocks (36 GB)
Stripe 0:
Device Start Block Dbase State Reloc Hot Spare
c1t0d0s5 0 No Okay Yes
d40: Mirror
Submirror 0: d41
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 83890944 blocks (40 GB)
d41: Submirror of d40
State: Okay
Size: 83890944 blocks (40 GB)
Stripe 0:
Device Start Block Dbase State Reloc Hot Spare
c1t0d0s4 0 No Okay Yes
d30: Mirror
Submirror 0: d31
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 41945472 blocks (20 GB)
d31: Submirror of d30
State: Okay
Size: 41945472 blocks (20 GB)
Stripe 0:
Device Start Block Dbase State Reloc Hot Spare
c1t0d0s3 0 No Okay Yes
d10: Mirror
Submirror 0: d11
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 41945472 blocks (20 GB)
d11: Submirror of d10
State: Okay
Size: 41945472 blocks (20 GB)
Stripe 0:
Device Start Block Dbase State Reloc Hot Spare
c1t0d0s0 0 No Okay Yes
d20: Mirror
Submirror 0: d21
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 41945472 blocks (20 GB)
d21: Submirror of d20
State: Okay
Size: 41945472 blocks (20 GB)
Stripe 0:
Device Start Block Dbase State Reloc Hot Spare
c1t0d0s1 0 No Okay Yes
d62: Concat/Stripe
Size: 286556160 blocks (136 GB)
Stripe 0:
Device Start Block Dbase Reloc
c1t3d0s0 0 No Yes
d52: Concat/Stripe
Size: 76808448 blocks (36 GB)
Stripe 0:
Device Start Block Dbase Reloc
c1t1d0s5 0 No Yes
d42: Concat/Stripe
Size: 83890944 blocks (40 GB)
Stripe 0:
Device Start Block Dbase Reloc
c1t1d0s4 0 No Yes
d32: Concat/Stripe
Size: 41945472 blocks (20 GB)
Stripe 0:
Device Start Block Dbase Reloc
c1t1d0s3 0 No Yes
d22: Concat/Stripe
Size: 41945472 blocks (20 GB)
Stripe 0:
Device Start Block Dbase Reloc
c1t1d0s1 0 No Yes
d12: Concat/Stripe
Size: 41945472 blocks (20 GB)
Stripe 0:
Device Start Block Dbase Reloc
c1t1d0s0 0 No Yes
Device Relocation Information:
Device Reloc Device ID
c1t3d0 Yes id1,ssd@n500000e0156bad40
c1t2d0 Yes id1,ssd@n500000e0156b
c1t1d0 Yes id1,ssd@n500000e01569e
c1t0d0 Yes id1,ssd@n500000e0156b5760
9. 指定系统使用metadevices,指定根文件系统:
#metaroot d10
10.编辑vfstab
# vi /etc/vfstab
root@bb # vi /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 -
/dev/dsk/c1t0d0s3 /dev/rdsk/c1t0d0s3 /usr ufs 1 no
-
/dev/dsk/c1t0d0s4 /dev/rdsk/c1t0d0s4 /var ufs 1 no
-
/dev/dsk/c1t0d0s6 /dev/rdsk/c1t0d0s6 /app ufs 2 yes
-
/dev/dsk/c1t0d0s5 /dev/rdsk/c1t0d0s5 /opt ufs 2 yes
改过的表如下：注意因为d60是新增的，所以mount at boot要设置“yes”要不然下次机器启动会丢失，避免手动mount
root@SCSC-MON-20-MOB # vi 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 -
/dev/md/dsk/d30 /dev/md/rdsk/d30 /usr ufs 1 no -
/dev/md/dsk/d40 /dev/md/rdsk/d40 /var ufs 1 no -
/dev/md/dsk/d50 /dev/md/rdsk/d50 /opt ufs 2 yes -
/dev/md/dsk/d60 /dev/md/rdsk/d60 /data ufs 2 yes -
/devices - /devices devfs - no -
11. 如果镜像的所有子镜像(请注意是所有子镜像)都没创建文件系统，在mounted之前必须：newfs /dev/md/dsk/d11
12. # lockfs –fa # sync #reboot
启动后会有类似以下的一些错误信息，不用管它，因为我们还没完成raid-devices的操作：
forceload of misc/md_trans failed
forceload of misc/md_raid failed
forceload of misc/md_hotspares failed，把另外一半弄上来就没了。
13.再匹配另外一半
#metattach d10 d12
#metattach d20 d22
#metattach d30 d32
#metattach d40 d42
#metattach d50 d52
#metattach d60 d62
速度有点慢哦！别以为死机了，乱敲一堆键盘。哈哈 好了，剩下的看看状态和看看同步的%比吧，#metastat more #metastat |grep %
好累！睡觉……….
