08-19-2008
As an aside, some kernels - BSD is one - have an fhopen call that will open a file based on inode number.
I don't see how that helps since you can read the file via /proc/<pid>/fd. If the filesystem still has the data out there somewhere, can you read the file onto media to rescue it?
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LEARN ABOUT CENTOS
xfs_ncheck
xfs_ncheck(8) System Manager's Manual xfs_ncheck(8)
NAME
xfs_ncheck - generate pathnames from i-numbers for XFS
SYNOPSIS
xfs_ncheck [ -i ino ] ... [ -f ] [ -s ] [ -l logdev ] device
xfs_ncheck -V
DESCRIPTION
xfs_ncheck with no -i arguments generates an inode number and pathname list of all files on the given filesystem. Names of directory files
are followed by /.. The output is not sorted in any particular order. The filesystem to be examined is specified by the device argument,
which should be the disk or volume device for the filesystem. Filesystems stored in files can also be checked, using the -f flag.
OPTIONS
-f Specifies that the filesystem image to be processed is stored in a regular file at device (see the mkfs.xfs -d file option). This
might happen if an image copy of a filesystem has been made into an ordinary file.
-l logdev
Specifies the device where the filesystem's external log resides. Only for those filesystems which use an external log. See the
mkfs.xfs -l option, and refer to xfs(5) for a detailed description of the XFS log.
-s Limits the report to special files and files with setuserid mode. This option may be used to detect violations of security pol-
icy.
-i ino Limits the report to only those files whose inode numbers follow. May be given multiple times to select multiple inode numbers.
-V Prints the version number and exits.
If the filesystem is seriously corrupted, or very busy and looks like it is corrupt, a message of the form that would be generated by
xfs_check(8) may appear.
xfs_ncheck is only useful with XFS filesystems.
SEE ALSO
mkfs.xfs(8), xfs_check(8), xfs(5).
xfs_ncheck(8)