ディスク保存の方法について その１ です
一連の操作をしてみて行きましょう。
$ ssh -l fdopstm 192.168.24.9 Password: $ su - Password: sv:~# fdisk -l Disk /dev/hda: 255 heads, 63 sectors, 524 cylinders Units = cylinders of 16065 * 512 bytes Device Boot Start End Blocks Id System /dev/hda1 * 1 111 891576 6 FAT16 /dev/hda2 112 524 3317422+ 83 Linux Disk /dev/hdb: 255 heads, 63 sectors, 1216 cylinders Units = cylinders of 16065 * 512 bytes Device Boot Start End Blocks Id System /dev/hdb1 * 1 111 891576 b Win95 FAT32 /dev/hdb2 112 237 1012095 82 Linux swap /dev/hdb3 238 1216 7863817+ 83 Linux
使用している領域は /dev/hda1 です。したがって もう少し小さくても良い でしょう。
# cat /etc/fstab
/dev/hdb2 swap swap defaults 0 0
/dev/hdb3 / ext3 defaults 1 1
/dev/hda2 /var/data ext2 defaults 1 2
/dev/cdrom /cdrom iso9660 user,ro,noauto,exec,iocharset=euc-jp,codepage=932 0 0
none /proc proc defaults 0 0
none /dev/pts devpts gid=5,mode=620 0 0
none /proc/bus/usb usbfs noauto 0 0
# mount
/dev/hdb3 on / type ext3 (rw)
none on /proc type proc (rw)
/dev/hda2 on /var/data type ext2 (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
usbfs on /proc/bus/usb type usbfs (rw)
/dev/hda1 を 分割します fstab の /dev/hda2 を /dev/hda3 に 変更せねば なりませぬ。
# fdisk /dev/hda
Command (m for help): p
Disk /dev/hda: 255 heads, 63 sectors, 524 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 111 891576 6 FAT16
/dev/hda2 112 524 3317422+ 83 Linux
Command (m for help): p
Disk /dev/hda: 255 heads, 63 sectors, 524 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 43 345366 6 FAT16
/dev/hda2 44 111 546210 83 Linux
/dev/hda3 112 524 3317422+ 83 Linux
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Re-read table failed with error 16: Device or resource busy.
Reboot your system to ensure the partition table is updated.
WARNING: If you have created or modified any DOS 6.x
partitions, please see the fdisk manual page for additional
information.
Syncing disks.
分割が済んだので fstab を 変更します。
# cd /etc/ # cp fstab fstab_hda_2partition # diff -s fstab fstab_hda_2partition 3c3 < /dev/hda3 /var/data ext2 defaults 1 2 --- > /dev/hda2 /var/data ext2 defaults 1 2
再起動確認した方が良いでしょう。現状確認後行います。
sv:/etc# fdisk -lu Disk /dev/hda: 255 heads, 63 sectors, 524 cylinders Units = sectors of 1 * 512 bytes Device Boot Start End Blocks Id System /dev/hda1 * 63 690794 345366 6 FAT16 /dev/hda2 690795 1783214 546210 83 Linux /dev/hda3 1783215 8418059 3317422+ 83 Linux Disk /dev/hdb: 255 heads, 63 sectors, 1216 cylinders Units = sectors of 1 * 512 bytes Device Boot Start End Blocks Id System /dev/hdb1 * 63 1783214 891576 b Win95 FAT32 /dev/hdb2 1783215 3807404 1012095 82 Linux swap /dev/hdb3 3807405 19535039 7863817+ 83 Linux sv:/etc# fdisk -l Disk /dev/hda: 255 heads, 63 sectors, 524 cylinders Units = cylinders of 16065 * 512 bytes Device Boot Start End Blocks Id System /dev/hda1 * 1 43 345366 6 FAT16 /dev/hda2 44 111 546210 83 Linux /dev/hda3 112 524 3317422+ 83 Linux Disk /dev/hdb: 255 heads, 63 sectors, 1216 cylinders Units = cylinders of 16065 * 512 bytes Device Boot Start End Blocks Id System /dev/hdb1 * 1 111 891576 b Win95 FAT32 /dev/hdb2 112 237 1012095 82 Linux swap /dev/hdb3 238 1216 7863817+ 83 Linux # df Filesystem 1k-blocks Used Available Use% Mounted on /dev/hdb3 7617504 4021584 3202732 56% / /dev/hda2 3265260 790408 2308984 26% /var/data # shutdown -r now Broadcast message from root (pts/0) (Mon Mar 10 09:39:43 2008): The system is going down for reboot NOW! sv:/etc# Connection to 192.168.24.9 closed by remote host. Connection to 192.168.24.9 closed.
再起動して支障が 無いか 確認する。
$ ssh -l fdopstm 192.168.24.9
Password:
$ su -
Password:
# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/hdb3 7617504 4021596 3202720 56% /
/dev/hda3 3265260 790408 2308984 26% /var/data
# fdisk -lu
Disk /dev/hda: 255 heads, 63 sectors, 524 cylinders
Units = sectors of 1 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 63 690794 345366 6 FAT16
/dev/hda2 690795 1783214 546210 83 Linux
/dev/hda3 1783215 8418059 3317422+ 83 Linux
Disk /dev/hdb: 255 heads, 63 sectors, 1216 cylinders
Units = sectors of 1 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hdb1 * 63 1783214 891576 b Win95 FAT32
/dev/hdb2 1783215 3807404 1012095 82 Linux swap
/dev/hdb3 3807405 19535039 7863817+ 83 Linux
# fdisk -l
Disk /dev/hda: 255 heads, 63 sectors, 524 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 43 345366 6 FAT16
/dev/hda2 44 111 546210 83 Linux
/dev/hda3 112 524 3317422+ 83 Linux
Disk /dev/hdb: 255 heads, 63 sectors, 1216 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hdb1 * 1 111 891576 b Win95 FAT32
/dev/hdb2 112 237 1012095 82 Linux swap
/dev/hdb3 238 1216 7863817+ 83 Linux
但し マウント の結果は 元のものと 同じ認識をしている？？
# mount -t msdos /dev/hda1 /mnt/
sv:~# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/hdb3 7617504 4021596 3202720 56% /
/dev/hda3 3265260 790404 2308988 26% /var/data
/dev/hda1 891328 285296 606032 33% /mnt
sv:~# umount /mnt/
# mkfs -t ext2 /dev/hda2
mke2fs 1.34 (25-Jul-2003)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
68320 inodes, 136552 blocks
6827 blocks (5.00%) reserved for the super user
First data block=0
5 block groups
32768 blocks per group, 32768 fragments per group
13664 inodes per group
Superblock backups stored on blocks:
32768, 98304
Writing inode tables: done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 30 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
# mount /dev/hda2 /mnt/
# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/hdb3 7617504 4021596 3202720 56% /
/dev/hda3 3265260 790404 2308988 26% /var/data
/dev/hda2 537604 20 510276 1% /mnt
# umount /mnt/
=============================
# mount /dev/hda1 /mnt/
# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/hdb3 7617504 4021596 3202720 56% /
/dev/hda3 3265260 790404 2308988 26% /var/data
/dev/hda1 891328 285296 606032 33% /mnt
# umount /mnt/
/* まだ怪しい？？ */
# mkdosfs /dev/hda1
mkdosfs 2.7 (14 Feb 2001)
# mount /dev/hda1 /mnt/
# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/hdb3 7617504 4021596 3202720 56% /
/dev/hda3 3265260 790404 2308988 26% /var/data
/dev/hda1 345176 0 345176 0% /mnt
# umount /mnt/
=================
しかたがない新しく インストール しないと駄目みたいである。
# shutdown -h now Broadcast message from root (pts/0) (Mon Mar 10 09:55:04 2008): The system is going down for system halt NOW! sv:~# Connection to 192.168.24.9 closed by remote host. Connection to 192.168.24.9 closed.
まあインストールの復習 ということです。
にゃんたろう 拝！
2008年 3月 9日 (日) 22:56:46 JST 作成