John Fiore on 25 Oct 2005 23:27:59 -0000 |
You might want to check out sleuthkit and autopsy (http://www.sleuthkit.org/). They work for most major filesystems, but I'm not sure how RAID thrown into the mix will affect things. As others have mentioned, the ideal situation would be if you could image the drive with dd, and then perform a recovery on the image, but 400 Gigs is a big drive and it isn't cheap. I would think that the tools would work just fine on the drive itself, rather than a drive image, but you'd increase your chances of a successful recovery if you can at the very least run the OS from a different disk, so that you minimize any changes to the disk you're trying to recover. I'm no expert on data recovery, but the more I think of it, the more optimistic I am that if you must do it this way, you should be ok working from the original drive (again, making sure that you're not actually mounting the thing and running the OS from it). Aside from the obvious fact that working from an image is preferable to working from the original in case something goes wrong, I believe one of the major reasons the forensics people prefer to work from an image, even when working read-only, is that they don't want to modify file access times, which are important when trying to piece together what might have happened after an attack, which isn't your concern. Maybe others on the list could shed more light on this. I'm not an expert. (On the other hand, none of us would know or think any less of you if you should happen to go to Best Buy or Staples, buy a large disk, and then return it in a few days.) Good luck. --- Eugene Smiley <eug+plug@esmiley.net> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > So, I'm having an "OMG, NO!" Moment. Last night I > had a 2.5 GB of > files on my debian testing samba server accidentally > get deleted. I > didn't have backups because I was working on > cp/mv'ing things to a > directory layout I was happy with first before > putting them to a data > DVD for backup. > > Currently the machine is powered down so that > nothing can be written > to disk over the affected areas. The files are on a > 400GB 3ware RAID5 > ext3 partition. Before giving up last night, I tried > 'recover', but > the filters I tried didn't recover anything. Is > there anything about > ext over Raid that would prevent data recovery? > > Right now, it's taking everything not to curl in a > ball on the floor > and suck my thumb while crying, "Oh my God... Oh my > God... Oh my > God..." But instead thought I'd see if anyone had > any ideas that > might help. > > > > > -----BEGIN PGP SIGNATURE----- > Version: PGP 8.0.3 > > iQA/AwUBQ14+L+kD7QKn7f0vEQKqnwCfdkqPcLoA/mmUWk3FgzSldwWDHOYAoMDn > L1CK5tS6AbrabO7/Hy5ixP5U > =VXcK > -----END PGP SIGNATURE----- > ___________________________________________________________________________ > Philadelphia Linux Users Group -- > http://www.phillylinux.org > Announcements - > http://lists.phillylinux.org/mailman/listinfo/plug-announce > General Discussion -- > http://lists.phillylinux.org/mailman/listinfo/plug > ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug
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