爲FreeBSD添加新硬盤

from : www.freeBSDchina.com
本文介紹手工爲FreeBSD添加新硬盤的一般性方法。假設我們的FreeBSD已經有了一塊IDE硬盤，我們需要爲它添加一塊新的IDE硬盤，並把新添加的硬盤的所有空間作爲一個分區加載到/disk1下面。



基礎知識



FreeBSD分區描述符爲從"a"到"h"的8個字母。根據慣例，分區"c"被保留用作描述整個磁盤，"a"用作標識根分區，"b"用作標識交換分區。對於新添加的硬盤，我們常常只建立一個分區，標識爲"e"。

IDE硬盤標記爲ad，而SCSI硬盤標記爲da，從0開始計數，因此，我們新添加的IDE硬盤將作爲ad1出現在系統中。





一般步驟



把新的IDE硬盤接入系統，並確認開機以後系統找到了新添加的硬盤。可以通過檢查/var/run/dmesg.boot來確認系統是否找到新添加的硬盤。

準備



vms# dd if=/dev/zero of=/dev/rad1 bs=1k count=1

1+0 records in

1+0 records out

1024 bytes transferred in 0.000822 secs (1245640 bytes/sec)

vms#



初始化磁盤



vms# fdisk -BI ad1

******* Working on device /dev/ad1 *******

fdisk: invalid fdisk partition table found

vms#



建立FreeBSD分區



vms# disklabel -B -w -r ad1s1 auto

vms# Feb 23 14:01:40 /kernel: ad1: cannot find label (no disk label)

Feb 23 14:01:40 /kernel: ad1s1: cannot find label (no disk label)

Feb 23 14:01:40 /kernel: ad1: cannot find label (no disk label)

Feb 23 14:01:40 /kernel: ad1s1: cannot find label (no disk label)

vms#



建立邏輯分區



vms# disklabel -e ad1s1



type: unknown

disk: amnesiac

label:

flags:

bytes/sector: 512

sectors/track: 63

tracks/cylinder: 16

sectors/cylinder: 1008

cylinders: 18931

sectors/unit: 19083393

rpm: 3600

interleave: 1

trackskew: 0

cylinderskew: 0

headswitch: 0 # milliseconds

track-to-track seek: 0 # milliseconds

drivedata: 0



8 partitions:

# size offset fstype [fsize bsize bps/cpg]

c: 19083393 0 unused 0 0 # (Cyl. 0 - 18931*)

e: 19083393 0 4.2BSD 4096 8192 16 # (Cyl. 0 - 18931*)



格式化分區，創建文件系統



vms# newfs /dev/ad1s1e

Warning: Block size and bytes per inode restrict cylinders per group to 67.

Warning: 3968 sector(s) in last cylinder unallocated

/dev/ad1s1e: 19083392 sectors in 4660 cylinders of 1 tracks, 4096 sectors

9318.1MB in 70 cyl groups (67 c/g, 134.00MB/g, 8512 i/g)

super-block backups (for fsck -b #) at:

32, 274464, 548896, 823328, 1097760, 1372192, 1646624, 1921056, 2195488, 2469920, 2744352, 3018784, 3293216, 3567648,

3842080, 4116512, 4390944, 4665376, ...



加載分區



vms# mkdir -p /disk1

vms# mount -t ufs /dev/ad1s1e /disk1
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