在OpenBSD里添加一块新磁盘
发表于 : 2010-08-04 5:47
这在FAQ上说的也很详细了，有手册情节的朋友也可以参考OpenBSD FAQ中文版
先创建OpenBSD的fdisk分区表
或者按照FAQ上的方法更简单：
然后运行如下命令
显示如下，实际上这是调用了vi的编辑界面：
这是一块原来NetBSD使用的磁盘，我们现在为了让OpenBSD使用，修改一下内容，因为这块磁盘是一个辅助磁盘，我不需要建立多个disklabel分区（并非不能，方法是一样的），在这里我们仅建立一个保存数据的分区，我们将原来用于NetBSD分区全部删除（代码里的红色字部分，用VI的DD指令就可以整行删除了。），再设置一个OpenBSD的专用disklabel分区, 将其修改为：
这里简单地说一下，因为a, b, c分区分别 / , swap 分区以及所有硬盘空间，所以我们的新分区命名为d, d:分区的偏移量是63, 也就是说前面一个磁道留给系统使用，真正的数据从第二个磁道开始，因为每磁道有63个扇区，所以总的size=78165360-63=78165279 ，编辑好后存盘。
还需要建立新的文件系统：
所用时间大概是1'07"。
先创建挂载点, 我们假设将这块新硬盘挂载到 /gobsd, 这个目录必须先创建，否则挂载不上:
最后为了实现自动挂载，编辑/etc/fstab文件, 在文件最后加入一行
重新启动后，查看一下文件系统:
好了，第二块磁盘已经在那里了。
如果想先不启动系统，这样：
但是如果要以后自动挂载，你还是需要修改/etc/fatab文件。
先创建OpenBSD的fdisk分区表
代码: 全选
# [color=royalblue]fdisk -e wd1[/color]
Enter 'help' for information
fdisk: 1> [color=royalblue]p[/color]
Disk: wd1 geometry: 4865/255/63 [78165360 Sectors]
Offset: 0 Signature: 0xAA55
Starting Ending LBA Info:
#: id C H S - C H S [ start: size ]
-------------------------------------------------------------------------------
*0: A9 0 1 1 - 4865 144 63 [ 63: 78165297 ] NetBSD
1: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
3: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
fdisk: 1> e 0
Starting Ending LBA Info:
#: id C H S - C H S [ start: size ]
-------------------------------------------------------------------------------
*0: A9 0 1 1 - 4865 144 63 [ 63: 78165297 ] NetBSD
Partition id ('0' to disable) [0 - FF]: [A9] (? for help) a6
Do you wish to edit in CHS mode? [n]
offset: [63]
size: [78165297]
fdisk:*1> [color=royalblue]w[/color]
Writing MBR at offset 0.
fdisk: 1> [color=royalblue]q[/color]
或者按照FAQ上的方法更简单：
代码: 全选
# [color=royalblue]fdisk -i wd1[/color]
Do you wish to write new MBR and partition table? [n] [color=royalblue]y[/color]
Writing MBR at offset 0.
#
然后运行如下命令
代码: 全选
#[color=royalblue]disklabel -e wd1[/color]代码: 全选
# /dev/rwd1c:
type: unknown
disk: WDC WD400BB-75A
label:
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 16
sectors/cylinder: 1008
cylinders: 77545
total sectors: 78165360
rpm: 3600
interleave: 1
boundstart: 63
boundend: 78165360
drivedata: 0
16 partitions:
# size offset fstype [fsize bsize cpg]
[color=red]a: 5309136 63 4.2BSD 2048 16384 0[/color]
[color=red]b: 263088 5309199 swap[/color]
c: 78165360 0 unused
[color=red]d: 78165360 0 unused[/color]
[color=red]e: 41943888 5572287 4.2BSD 2048 16384 0[/color]
[color=red]f: 8389584 47516175 4.2BSD 2048 16384 0[/color]
[color=red]g: 22259601 55905759 4.2BSD 2048 16384 0[/color]
# Notes:
# Up to 16 partitions are valid, named from 'a' to 'p'. Partition 'a' is
# your root filesystem, 'b' is your swap, and 'c' should cover your whole
# disk. Any other partition is free for any use. 'size' and 'offset' are
# in 512-byte blocks. fstype should be '4.2BSD', 'swap', or 'none' or some
# other values. fsize/bsize/cpg should typically be '2048 16384 16' for a
# 4.2BSD filesystem (or '512 4096 16' except on alpha, sun4, ...)
代码: 全选
# /dev/rwd1c:
type: unknown
disk: WDC WD400BB-75A
label:
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 16
sectors/cylinder: 1008
cylinders: 77545
total sectors: 78165360
rpm: 3600
interleave: 1
boundstart: 63
boundend: 78156225
drivedata: 0
16 partitions:
# size offset fstype [fsize bsize cpg]
c: 78165360 0 unused
[color=royalblue]d: 78165297 63 4.2BSD 1024 8192 16[/color]
# Notes:
# Up to 16 partitions are valid, named from 'a' to 'p'. Partition 'a' is
# your root filesystem, 'b' is your swap, and 'c' should cover your whole
# disk. Any other partition is free for any use. 'size' and 'offset' are
# in 512-byte blocks. fstype should be '4.2BSD', 'swap', or 'none' or some
# other values. fsize/bsize/cpg should typically be '2048 16384 16' for a
# 4.2BSD filesystem (or '512 4096 16' except on alpha, sun4, ...)
还需要建立新的文件系统：
代码: 全选
# [color=royalblue]newfs wd1d[/color]
/dev/rwd1d: 38166.6MB in 78165296 sectors of 512 bytes
763 cylinder groups of 50.05MB, 6406 blocks, 12864 inodes each
super-block backups (for fsck -b #) at:
32, 102528, 205024, 307520, 410016, 512512, 615008, 717504, 820000, 922496, 1024992,
1127488, 1229984, 1332480, 1434976, 1537472, 1639968, 1742464, 1844960, 1947456, 2049952,
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5227328, 5329824, 5432320, 5534816, 5637312, 5739808, 5842304, 5944800, 6047296, 6149792,
6252288, 6354784, 6457280, 6559776, 6662272, 6764768, 6867264, 6969760, 7072256, 7174752,
7277248, 7379744, 7482240, 7584736, 7687232, 7789728, 7892224, 7994720, 8097216, 8199712,
8302208, 8404704, 8507200, 8609696, 8712192, 8814688, 8917184, 9019680, 9122176, 9224672,
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10249632, 10352128, 10454624, 10557120, 10659616, 10762112, 10864608, 10967104, 11069600,
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先创建挂载点, 我们假设将这块新硬盘挂载到 /gobsd, 这个目录必须先创建，否则挂载不上:
代码: 全选
# [color=royalblue]mkdir /gobsd[/color]
代码: 全选
/dev/wd0a / ffs rw 1 1
/dev/wd0i /home ffs rw,nodev,nosuid 1 2
/dev/wd0d /tmp ffs rw,nodev,nosuid 1 2
/dev/wd0e /usr ffs rw,nodev 1 2
/dev/wd0f /usr/obj ffs rw,nodev,nosuid 1 2
/dev/wd0g /var ffs rw,nodev,nosuid 1 2
/dev/wd0h /var/log ffs rw,nodev,nosuid 1 2
[color=royalblue]/dev/wd1d /gobsd ffs rw 1 1[/color]
重新启动后，查看一下文件系统:
代码: 全选
login as: [color=royalblue]root[/color]
[email protected]'s password:[color=royalblue]whocares?[/color]
Last login: Tue Aug 3 16:13:08 2010 from 192.168.2.34
OpenBSD 4.7-stable (GENERIC) #0: Mon Aug 2 22:09:37 CDT 2010
Welcome to OpenBSD: The proactively secure Unix-like operating system.
Please use the sendbug(1) utility to report bugs in the system.
Before reporting a bug, please try to reproduce it with the latest
version of the code. With bug reports, please try to ensure that
enough information to reproduce the problem is enclosed, and if a
known fix for it exists, include that as well.
#
# [color=royalblue]df[/color]
Filesystem 512-blocks Used Avail Capacity Mounted on
/dev/wd0a 2058188 88480 1866800 5% /
/dev/wd0i 30959068 4 29411112 0% /home
/dev/wd0d 2058252 12 1955328 0% /tmp
/dev/wd0e 16509164 5093788 10589920 32% /usr
/dev/wd0f 6186940 4 5877592 0% /usr/obj
/dev/wd0g 6186940 501132 5376464 9% /var
/dev/wd0h 6186940 120 5877476 0% /var/log
/dev/wd1d 75687016 2 71902664 0% /gobsd
如果想先不启动系统，这样：
代码: 全选
# [color=royalblue]mount /dev/wd1d /gobsd[/color]但是如果要以后自动挂载，你还是需要修改/etc/fatab文件。