дамп информации о файловой системе ext2 / ext3 / ext4 (dump ext2/ext3/ext4 file system information)
Имя (Name)
dumpe2fs - dump ext2/ext3/ext4 file system information
Синопсис (Synopsis)
dumpe2fs [ -bfghixV ] [ -o superblock=superblock ] [ -o
blocksize=blocksize ] device
Описание (Description)
dumpe2fs prints the super block and blocks group information for
the file system present on device.
Note: When used with a mounted file system, the printed
information may be old or inconsistent.
Параметры (Options)
-b print the blocks which are reserved as bad in the file
system.
-o superblock=superblock
use the block superblock when examining the file system.
This option is not usually needed except by a file system
wizard who is examining the remains of a very badly
corrupted file system.
-o blocksize=blocksize
use blocks of blocksize bytes when examining the file
system. This option is not usually needed except by a
file system wizard who is examining the remains of a very
badly corrupted file system.
-f force dumpe2fs to display a file system even though it may
have some file system feature flags which dumpe2fs may not
understand (and which can cause some of dumpe2fs's display
to be suspect).
-g display the group descriptor information in a machine
readable colon-separated value format. The fields
displayed are the group number; the number of the first
block in the group; the superblock location (or -1 if not
present); the range of blocks used by the group
descriptors (or -1 if not present); the block bitmap
location; the inode bitmap location; and the range of
blocks used by the inode table.
-h only display the superblock information and not any of the
block group descriptor detail information.
-i display the file system data from an image file created by
e2image, using device as the pathname to the image file.
-m If the mmp feature is enabled on the file system, check if
device is in use by another node, see e2mmpstatus(8) for
full details. If used together with the -i option, only
the MMP block information is printed.
-x print the detailed group information block numbers in
hexadecimal format
-V print the version number of dumpe2fs and exit.
Статус выхода (Exit)
dumpe2fs exits with a return code of 0 if the operation completed
without errors. It will exit with a non-zero return code if
there are any errors, such as problems reading a valid
superblock, bad checksums, or if the device is in use by another
node and -m is specified.
Ошибки (баги) (Bugs)
You may need to know the physical file system structure to
understand the output.
