[ale] recovering an ext3 drive A SOLUTION!!

ChangingLINKS.com x3 at ChangingLINKS.com
Mon Jan 20 18:18:13 EST 2003


That post made my day! I was laughing out loud, and just about choking on my 
M&M's!

Drew

On Monday 20 January 2003 16:03, James P. Kinney III wrote:
> I would like to nominate Michael Hirsch as the ALE flag bearer for a
> very needed improvement to the ext3 file system. I really do like the
> idea of an automatic FIFO pipeline for disk space recovery. The security
> freaks will squall so there will need to be a super delete, say 'shred'
> that does not move the blocks but wipes them. This could be selectively
> turned on at the time of creating the file system. RedHat will make it
> the default option. Debian will ask you to verify the locations on each
> file system of the inode storage file to activate it. Mandrake will ask
> for a donation to upgrade it. Gentoo will need a new 300G download to
> implement it. Slackware will just quietly include it with no fanfare at
> all.  :)
>
> On Mon, 2003-01-20 at 15:41, Michael D. Hirsch wrote:
> > The basic rule should be, when an inode is unlinked, it and its disk
> > blocks get moved to a MRU (Most Recently Used) list.  When someone needs
> > to relink (a new syscall?) the MRU can be consulted.  To keep the
> > engineers happy, the MRU could be limited to some reasonable percentage
> > of the file system, or maybe for performance freaks, to a percentage of
> > the unused space.  Or, if the designer felt like getting fancy, some kind
> > of decay functions so that it attempts to keep all files around for an
> > hour, but after that it starts deleting files according to some rule.
> >
> > I imagine this at the filesystem level, not by putting wrappers around
> > "rm".  It shouldn't matter who does the unlinking, the filesystem should
> > just keep track.
> >
> > (I'm imagining this as open source, so if you want to file off this
> > safety device, you can get a filesystem that will let you shoot yourself
> > in the foot.)
> >
> > If ext3 had this, everyone would have this capability and few would know
> > about it.  Someone like you who never made a mistake would never know it
> > was there.  Neither would ordinary users know--all they would know is
> > that undelete works.

-- 
Wishing you Happiness, Joy, and Laughter,
Drew Brown
http://www.ChangingLINKS.com
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