mke2fs(make ext2 file system)
mke2fs(make ext2 file system)功能说明：建立ext2文件系统。
语 法：mke2fs [-cFMqrSvV][-b <区块大小>][-f <不连续区段大小>][-i <字节>][-N <inode数>][-l <文件>][-L <标签>][-m <百分比值>][-R=<区块数>][ 设备名称][区块数]
补充说明：mke2fs可建立Linux的ext2文件系统。
参 数：
-b<区块大小> 指定区块大小，单位为字节。
-c 检查是否有损坏的区块。
-f<不连续区段大小> 指定不连续区段的大小，单位为字节。
-F 不管指定的设备为何，强制执行mke2fs。
-i<字节> 指定"字节/inode"的比例。
-N<inode数> 指定要建立的inode数目。
-l<文件> 从指定的文件中，读取文件西中损坏区块的信息。
-L<标签> 设置文件系统的标签名称。
-m<百分比值> 指定给管理员保留区块的比例，预设为5%。
-M 记录最后一次挂入的目录。
-q 执行时不显示任何信息。
-r 指定要建立的ext2文件系统版本。
-R=<区块数> 设置磁盘阵列参数。
-S 仅写入superblock与group descriptors，而不更改inode able inode bitmap以及block bitmap。
-v 执行时显示详细信息。
-V 显示版本信息。
mke2fs
mke2fs [options] device [blocks] mkfs.ext2 [options] device [blocks]
System administration command. Format device as a Linux Second Extended Filesystem. You may specify the number of blocks on the device or allow mke2fs to guess.
Options
Specify block size in bytes.
Scan device for bad blocks before execution.
Specify extended features. This option's parameters may be given in a comma-separated list:
stride=size Configure filesystem for a RAID array. Set stride size to size blocks per stripe.
resize=blocks Reserve descriptor table space to grow filesystem to the specified number of blocks.
Specify fragment size in bytes.
Force mke2fs to run even if filesystem is mounted or device is not a block special device. This option is probably best avoided.
Create an inode for each bytes-per-inode of space. bytes-per-inode must be 1024 or greater; it is 4096 by default.
Create an ext3 journal. This is the same as invoking mkfs.ext3.
Use specified parameterlist to create an ext3 journal. The following two parameters may be given in a comma-separated list:
size=journal-size Create a journal of journal-size megabytes. The size may be between 1024 filesystem blocks and 102,400 filesystem blocks in size (e.g., 1-100 megabytes if using 1K blocks, 4-400 megabytes if using 4K blocks).
device=journal-device Use an external journal-device to hold the filesystem journal. The journal-device can be specified by name, by volume label, or by UUID.
Consult filename for a list of bad blocks.
Set volume label for filesystem.
Reserve percentage percent of the blocks for use by privileged users.
Set the last mounted directory for filesystem to directory.
Don't create the filesystem; just show what would happen if it were run. This option is overridden by -F.
Specify number of inodes to reserve for filesystem. By default, this number is calculated from the number of blocks and the inode size.
Set filesystem operating system type to os. The default value is usually Linux.
Use specified featurelist to create filesystem. The sparse_super and filetype features are used by default on kernels 2.2 and later. The following parameters may be given in a comma-separated list:
dir_index Use hashed B-trees to index directories.
filetype Store file type information in directory entries.
has_journal Create an ext3 journal. Same as using the -j option.
journal_dev Prepare an external journaling device by creating an ext3 journal on device instead of formatting it.
sparse_super Save space on a large filesystem by creating fewer superblock backup copies.
Quiet mode.
Set filesystem revision number to revision.
Write only superblock and group descriptors; suppress writing of inode table and block and inode bitmaps. Useful only when attempting to salvage damaged systems.
Set bytes-per-inode based on the intended use of the filesystem. Supported filesystem types are:
news Four kilobytes per inode.
largefile One megabyte per inode.
largefile4 Four megabytes per inode.
Verbose mode.
Print version number, then exit.