RE: ext3 and undeletion

Rose, Billy
2002-02-25T16:47:33Z

Is there work being done on a filesystem extension that allows admins to
'undelete' files similar to the way Netware does? My company uses Netware
only for that fact, and I would like to see more Linux boxes here. I have
sold them on a couple of webservers and one application server, but they
hold fast to the Netware file servers because loading a backup copy of some
file from tape is not feasable with the amount of data we have (approaching
1T). I have looked across the web and only found this:
http://www.timpanogas.com/
but I don't want a Netware filesystem running on Linux, I want a *native*
Linux filesystem (i.e. ext3) that has the ability to queue deleted files
should I configure it to. Is there such a thing? If not, do you feel it
would be worth developing into the kernel? This would make Linux much more
attractive to Netware houses I believe.

Billy Rose

-----Original Message-----
From: Andreas Dilger [mailto:adilger@turbolabs.com]
Sent: Sunday, February 24, 2002 11:08 PM
To: Steven Walter; linux-kernel@vger.kernel.org
Subject: Re: ext3 and undeletion

On Feb 24, 2002 21:27 -0600, Steven Walter wrote:
> After unintentionally deleting some file, I noticed what appears to be
> an incosistency (or at least a change) in ext3. Running debugfs and
> executing the command "lsdel", I saw no inodes listed since I last ran
> the partition as ext2. Does ext3 not add its deleted inodes to whatever
> list ext2 does? And can this be fixed without compromising the speed or
> data-integrity of ext3?

Known problem. Apparently difficult to fix, unfortunately. It's not so
much that ext2 adds deleted inodes to a list, as that it simply marks the
inode "deleted" and doesn't overwrite any of the inode data on the disk.

Cheers, Andreas
--
Andreas Dilger
http://sourceforge.net/projects/ext2resize/
http://www-mddsp.enel.ucalgary.ca/People/adilger/

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