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Filesystems, Disks and Memory
Recreating a deleted hardlink to a file if I know the inode number
Post 302223892 by Smiling Dragon on Monday 11th of August 2008 05:02:19 PM
08-11-2008
Yoicks! Probably a little bit extreme for what I need (as I can recover the data from the proc filesystem's filehandle list). Good point about the cross-filesystem thing, that explains why ln isn't going to play ball.
What I guess I'm really looking for is a way to take an inode number (something that still has at least one link to it) and create a 'file' (aka directory entry) on the same filesystem that links to it.
fsdb sounds like something to take a look at, but it also sounds like a great way for me to really fubar a filesystem. Methinks I'll play with it on a lab server
What I guess I'm really looking for is a way to take an inode number (something that still has at least one link to it) and create a 'file' (aka directory entry) on the same filesystem that links to it.
fsdb sounds like something to take a look at, but it also sounds like a great way for me to really fubar a filesystem. Methinks I'll play with it on a lab server
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LEARN ABOUT CENTOS
hardlink
hardlink(1) General Commands Manual hardlink(1) NAME
hardlink - Consolidate duplicate files via hardlinks SYNOPSIS
hardlink [-c] [-n] [-v] [-vv] [-h] directory1 [ directory2 ... ] DESCRIPTION
This manual page documents hardlink, a program which consolidates duplicate files in one or more directories using hardlinks. hardlink traverses one or more directories searching for duplicate files. When it finds duplicate files, it uses one of them as the mas- ter. It then removes all other duplicates and places a hardlink for each one pointing to the master file. This allows for conservation of disk space where multiple directories on a single filesystem contain many duplicate files. Since hard links can only span a single filesystem, hardlink is only useful when all directories specified are on the same filesystem. OPTIONS
-c Compare only the contents of the files being considered for consolidation. Disregards permission, ownership and other differ- ences. -f Force hardlinking across file systems. -n Do not perform the consolidation; only print what would be changed. -v Print summary after hardlinking. -vv Print every hardlinked file and bytes saved. Also print summary after hardlinking. -h Show help. AUTHOR
hardlink was written by Jakub Jelinek <jakub@redhat.com>. Man page written by Brian Long. Man page updated by Jindrich Novy <jnovy@redhat.com> BUGS
hardlink assumes that its target directory trees do not change from under it. If a directory tree does change, this may result in hardlink accessing files and/or directories outside of the intended directory tree. Thus, you must avoid running hardlink on potentially changing directory trees, and especially on directory trees under control of another user. hardlink(1)