【原创】linux交换空间管理--交换分区
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要求:以交换分区的方式给系统增加100MB的交换空间
操作系统:FC6
//查看当前系统硬盘空间的使用情况
[root@localhost ~]# fdisk -l
Disk /dev/hda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 255 2048256 7 HPFS/NTFS
/dev/hda2 256 1044 6337642+ f W95 Ext'd (LBA)
/dev/hda5 256 766 4104544+ 83 Linux
/dev/hda6 767 829 506016 82 Linux swap / Solaris
Disk /dev/hda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 255 2048256 7 HPFS/NTFS
/dev/hda2 256 1044 6337642+ f W95 Ext'd (LBA)
/dev/hda5 256 766 4104544+ 83 Linux
/dev/hda6 767 829 506016 82 Linux swap / Solaris
//创建一个交换分区,命名为/hda7(具体命名视实际情况而定)
[root@localhost ~]# fdisk /dev/hda
The number of cylinders for this disk is set to 1044.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): p
Disk /dev/hda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 255 2048256 7 HPFS/NTFS
/dev/hda2 256 1044 6337642+ f W95 Ext'd (LBA)
/dev/hda5 256 766 4104544+ 83 Linux
/dev/hda6 767 829 506016 82 Linux swap / Solaris
Command (m for help): n
Command action
l logical (5 or over)
p primary partition (1-4)
l
First cylinder (830-1044, default 830):
Using default value 830
Last cylinder or +size or +sizeM or +sizeK (830-1044, default 1044): +100M
Command (m for help): t
Partition number (1-7): 7
The number of cylinders for this disk is set to 1044.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): p
Disk /dev/hda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 255 2048256 7 HPFS/NTFS
/dev/hda2 256 1044 6337642+ f W95 Ext'd (LBA)
/dev/hda5 256 766 4104544+ 83 Linux
/dev/hda6 767 829 506016 82 Linux swap / Solaris
Command (m for help): n
Command action
l logical (5 or over)
p primary partition (1-4)
l
First cylinder (830-1044, default 830):
Using default value 830
Last cylinder or +size or +sizeM or +sizeK (830-1044, default 1044): +100M
Command (m for help): t
Partition number (1-7): 7
Hex code (type L to list codes): L
0 Empty 1e Hidden W95 FAT1 80 Old Minix be Solaris boot
1 FAT12 24 NEC DOS 81 Minix / old Lin bf Solaris
2 XENIX root 39 Plan 9 82 Linux swap / So c1 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 83 Linux c4 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
5 Extended 41 PPC PReP Boot 85 Linux extended c7 Syrinx
6 FAT16 42 SFS 86 NTFS volume set da Non-FS data
7 HPFS/NTFS 4d QNX4.x 87 NTFS volume set db CP/M / CTOS / .
8 AIX 4e QNX4.x 2nd part 88 Linux plaintext de Dell Utility
9 AIX bootable 4f QNX4.x 3rd part 8e Linux LVM df BootIt
a OS/2 Boot Manag 50 OnTrack DM 93 Amoeba e1 DOS access
b W95 FAT32 51 OnTrack DM6 Aux 94 Amoeba BBT e3 DOS R/O
c W95 FAT32 (LBA) 52 CP/M 9f BSD/OS e4 SpeedStor
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi eb BeOS fs
f W95 Ext'd (LBA) 54 OnTrackDM6 a5 FreeBSD ee EFI GPT
10 OPUS 55 EZ-Drive a6 OpenBSD ef EFI (FAT-12/16/
11 Hidden FAT12 56 Golden Bow a7 NeXTSTEP f0 Linux/PA-RISC b
12 Compaq diagnost 5c Priam Edisk a8 Darwin UFS f1 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor a9 NetBSD f4 SpeedStor
16 Hidden FAT16 63 GNU HURD or Sys ab Darwin boot f2 DOS secondary
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fd Linux raid auto
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fe LANstep
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid ff BBT
1c Hidden W95 FAT3 75 PC/IX
Hex code (type L to list codes): 82
Changed system type of partition 7 to 82 (Linux swap / Solaris)
1 FAT12 24 NEC DOS 81 Minix / old Lin bf Solaris
2 XENIX root 39 Plan 9 82 Linux swap / So c1 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 83 Linux c4 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
5 Extended 41 PPC PReP Boot 85 Linux extended c7 Syrinx
6 FAT16 42 SFS 86 NTFS volume set da Non-FS data
7 HPFS/NTFS 4d QNX4.x 87 NTFS volume set db CP/M / CTOS / .
8 AIX 4e QNX4.x 2nd part 88 Linux plaintext de Dell Utility
9 AIX bootable 4f QNX4.x 3rd part 8e Linux LVM df BootIt
a OS/2 Boot Manag 50 OnTrack DM 93 Amoeba e1 DOS access
b W95 FAT32 51 OnTrack DM6 Aux 94 Amoeba BBT e3 DOS R/O
c W95 FAT32 (LBA) 52 CP/M 9f BSD/OS e4 SpeedStor
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi eb BeOS fs
f W95 Ext'd (LBA) 54 OnTrackDM6 a5 FreeBSD ee EFI GPT
10 OPUS 55 EZ-Drive a6 OpenBSD ef EFI (FAT-12/16/
11 Hidden FAT12 56 Golden Bow a7 NeXTSTEP f0 Linux/PA-RISC b
12 Compaq diagnost 5c Priam Edisk a8 Darwin UFS f1 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor a9 NetBSD f4 SpeedStor
16 Hidden FAT16 63 GNU HURD or Sys ab Darwin boot f2 DOS secondary
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fd Linux raid auto
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fe LANstep
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid ff BBT
1c Hidden W95 FAT3 75 PC/IX
Hex code (type L to list codes): 82
Changed system type of partition 7 to 82 (Linux swap / Solaris)
Command (m for help): w
The partition table has been altered!
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: 设备或资æºå¿™.
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.
//格式化该分区
[root@localhost ~]# mkswap /dev/hda7
Setting up swapspace version 1, size = 100237 kB
Setting up swapspace version 1, size = 100237 kB
//查看系统当前交换空间的大小
[root@localhost ~]# free
total used free shared buffers cached
Mem: 252036 135724 116312 0 10452 59016
-/+ buffers/cache: 66256 185780
Swap: 8184 0 8184
//激活该交换空间
[root@localhost ~]# swapon /dev/hda7
//再查看系统中交换空间的大小是否有变法
[root@localhost ~]# free
total used free shared buffers cached
Mem: 252036 135864 116172 0 10492 59016
-/+ buffers/cache: 66356 185680
Swap: 106068 0 106068
total used free shared buffers cached
Mem: 252036 135864 116172 0 10492 59016
-/+ buffers/cache: 66356 185680
Swap: 106068 0 106068
//交换分区加入/etc/fstab文件中,使其自动加载
[root@localhost ~]# vi /etc/fstab
LABEL=/ / ext3 defaults 1 1
devpts /dev/pts devpts gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
LABEL=SWAP-hda7 swap swap defaults 0 0
/dev/hda7 swap swap defaults 0 0
LABEL=/ / ext3 defaults 1 1
devpts /dev/pts devpts gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
LABEL=SWAP-hda7 swap swap defaults 0 0
/dev/hda7 swap swap defaults 0 0
ps:此帖绝对是本人原创...
转载时..
请注明:
转至http://blog.csdn.net/Kipen/ 作者:flyshitou(石の頭丶)
请尊重他人的劳动果实..
谢谢..
--by flyshitou (石の頭丶)
转载时..
请注明:
转至http://blog.csdn.net/Kipen/ 作者:flyshitou(石の頭丶)
请尊重他人的劳动果实..
谢谢..
--by flyshitou (石の頭丶)
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