debugfs.ocfs2 - OCFS2 file system debugger.

debugfs.ocfs2 [-f cmdfile] [-V] [-w] [-?] [device]

The debugfs.ocfs2 is an interactive file system debugger. It can be used to examine the state of an OCFS2 filesystem. device is the special file corresponding the device containing the OCFS2 filesystem (e.g /dev/hdxx).

-f, --file cmdfile

Causes debugfs.ocfs2 to read in commands from cmdfile and execute them. It exits after all the commands are executed.

-w, --write

Specifies that the filesystem should be opened in read-write mode. Without this option, the filesystem is opened in the read-only mode.

-V, --version

Print version information and exit.

-?, --help

Displays help and exit.

Many debugfs.ocfs2 commands take a filespec as an argument to specify an inode (as opposed to a pathname) in the filesystem which is currently opened by debugfs.ocfs2. The filespec argument may be specified in two forms. The first form is an inode number surrounded by angle brackets, e.g., <32>. The second form is a pathname; if the pathname is prefixed by a forward slash ('/'), then it is interpreted relative to the root of the filesystem which is currently opened by debugfs.ocfs2. If not, the path is interpreted relative to the current working directory as maintained by debugfs.ocfs2, which can be modified using the command cd. If the pathname is prefixed by a double forward slash ('//'), then it is interpreted relative to the root of the system directory of the filesystem opened by debugfs.ocfs2.

This is a list of the commands which debugfs.ocfs2 supports.

cat filespec

Dump the contents of inode filespec to stdout.

cd filespec

Change the current working directory to filespec.

chroot filespec

Change the root directory to be the directory filespec.

close

Close the currently opened filesystem.

curdev

Show the currently open device.

dump [-p] filespec outfile

Dump the contents of the inode filespec to the output file outfile. If the -p is given, set the owner, group, timestamps and permissions information on outfile to match those of filespec.

extent block#

Display the contents of the extent structure at block#.

group block#

Display the contents of the group structure at block#.

help, ?

Print the list of commands understood by debugfs.ocfs2.

lcd directory

Change the current working directory of the debugfs.ocfs2 process to the directory on the native filesystem.

logdump node#

Display the contents of the journal for node node#.

ls [-l] filespec

Print the listing of the files in the directory filespec. The -l flag will list files in the long format.

open device

Open the filesystem on device.

quit, q

Quit debugfs.ocfs2.

rdump [-v] filespec outdir

Recursively dump directory filespec and all its contents (including regular files, symbolic links and other directories) into the outdir which should be an existing directory on the native filesystem.

slotmap

Display the contents of the slotmap system file.

stat filespec

Display the contents of the inode structure of the inode filespec.

stats

Display the contents of the super block.

This tool has been modelled after debugfs, a debugging tool for ext2.

mkfs.ocfs2(8) fsck.ocfs2(8) tunefs.ocfs2(8) mounted.ocfs2(8) ocfs2console(8) ocfs2cdsl(8)

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