Linux 格式化扩展分区(Extended)

如果你在Linux系统中格式化磁盘时遇到如下错误，那么表示你正在格式化一个扩展分区。

[root@GETTestLNX06 ~]# mkfs.ext4 /dev/sdb1   mke2fs 1.41.12 (17-May-2010)   mkfs.ext4: inode_size (128) * inodes_count (0) too big for a   filesystem with 0 blocks, specify higher inode_ratio (-i)   or lower inode count (-N).  

直接格式化扩展分区是不允许的，只能格式化主分区和逻辑分区。那么那么应该如何格式化一个扩展分区呢，我们要么删除该扩展分区，创建一个主分区；要么在扩展分区上创建逻辑分区，如下操作所示

1： 创建逻辑分区

[root@GETTestLNX06 ~]# fdisk /dev/sdb   WARNING: DOS-compatible mode is deprecated. It's strongly recommended to          switch off the mode (command 'c') and change display units to          sectors (command 'u').   Command (m for help): p   Disk /dev/sdb: 107.4 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xd61351c9      Device Boot      Start         End      Blocks   Id  System /dev/sdb1               1       13054   104856223+   5  Extended   Command (m for help): n Command action    l   logical (5 or over)    p   primary partition (1-4) l First cylinder (1-13054, default 1): 1 Last cylinder, +cylinders or +size{K,M,G} (1-13054, default 13054): Using default value 13054   Command (m for help): p   Disk /dev/sdb: 107.4 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xd61351c9      Device Boot      Start         End      Blocks   Id  System /dev/sdb1               1       13054   104856223+   5  Extended /dev/sdb5               1       13054   104856192   83  Linux   Command (m for help): w The partition table has been altered!   Calling ioctl() to re-read partition table. Syncing disks.

2：格式化逻辑分区

[root@GETTestLNX06 ~]# mkfs.ext4 /dev/sdb5 mke2fs 1.41.12 (17-May-2010) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 6553600 inodes, 26214048 blocks 1310702 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 800 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks:         32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,         4096000, 7962624, 11239424, 20480000, 23887872   Writing inode tables: done                            Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done   This filesystem will be automatically checked every 28 mounts or 180 days, whichever comes first.  Use tune2fs -c or -i to override.

3：将挂载信息写入配置文件

编辑[root@GETTestLNX06 ~]# vi /etc/fstab

4：挂载新建的分区

[root@GETTestLNX06 ~]# cd / [root@GETTestLNX06 /]# mkdir u01 [root@GETTestLNX06 /]# mount -a [root@GETTestLNX06 /]# df -h Filesystem            Size  Used Avail Use% Mounted on /dev/mapper/vg_gettestlnx06-lv_root                        44G  2.3G   40G   6% / tmpfs                 3.9G     0  3.9G   0% /dev/shm /dev/sda1             477M   33M  419M   8% /boot /dev/sdb5              99G   60M   94G   1% /u01 [root@GETTestLNX06 /]#

 

from:http://www.cnblogs.com/kerrycode/p/4423753.html

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