建立一个普通的Linux分区(主分区、逻辑分区均可)
fdisk /dev/sdbCommand (m for help): pDisk /dev/sdb: 8589 MB, 8589934592 bytes255 heads, 63 sectors/track, 1044 cylinders, total 16777216 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x740e36e3 Device Boot Start End Blocks Id System/dev/sdb1 63 4194367 2097152+ 83 Linux/dev/sdb2 4194368 16777215 6291424 5 Extended/dev/sdb5 4194431 8388735 2097152+ 83 Linux/dev/sdb6 8388799 16777215 4194208+ 83 Linux
以sdb6为例,可以看到分区的十六进制编码是83,即普通的Linux分区。
修改分区类型的十六进制编码
//t命令:改写分区十六进制编码Command (m for help): t Partition number (1-6): 6//L命令可以查看不同分区的十六进制编码,交换分区为82Hex code (type L to list codes): 82Changed system type of partition 6 to 82 (Linux swap / Solaris)Command (m for help): pDisk /dev/sdb: 8589 MB, 8589934592 bytes255 heads, 63 sectors/track, 1044 cylinders, total 16777216 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x740e36e3 Device Boot Start End Blocks Id System/dev/sdb1 63 4194367 2097152+ 83 Linux/dev/sdb2 4194368 16777215 6291424 5 Extended/dev/sdb5 4194431 8388735 2097152+ 83 Linux/dev/sdb6 8388799 16777215 4194208+ 82 Linux swap / Solaris//分区表写入磁盘并退出Command (m for help): wThe partition table has been altered!Calling ioctl() to re-read partition table.Syncing disks.
格式化交换分区
mkswap /dev/sdb6Setting up swapspace version 1, size = 4194204 KiBno label, UUID=40eff2c0-3f6b-440e-bc2a-f71d3d5581a7
启用交换分区
swapon /dev/sdb6
查看交换分区加载状态
free total used free shared buffers cachedMem: 1030108 160768 869340 264 12040 56188-/+ buffers/cache: 92540 937568Swap: 6291352 0 6291352
停用交换分区
swapoff /dev/sdb6
p.s.
不能直接使用mount命令挂载swap分区,因为swap分区是没有挂载点的。
直接修改/etc/fstab配置文件,使系统启动时自动挂载:
/dev/sdb6 swap swap defaults 0 0//查看交换分区 swapon -sFilename Type Size Used Priority/dev/sda2 partition 2097148 0 -1/dev/sdb6 partition 4194204 0 -2
总结
以上所述是小编给大家介绍的Linux添加swap分区的方法,希望对大家有所帮助,如果大家有任何疑问欢迎给我留言,小编会及时回复大家的!
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