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Re: Using xfsdump On Linux With IRIX Version 1 FS?

To: Sean Elble <elbles@xxxxxxxxxx>
Subject: Re: Using xfsdump On Linux With IRIX Version 1 FS?
From: Matthias Schniedermeyer <ms@xxxxxxx>
Date: Fri, 24 Jul 2009 09:30:30 +0200
Cc: Eric Sandeen <sandeen@xxxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <C68EA385.B8CE%elbles@xxxxxxxxxx>
References: <4A691B2D.1090600@xxxxxxxxxxx> <C68EA385.B8CE%elbles@xxxxxxxxxx>
User-agent: Mutt/1.5.19 (2009-01-05)
On 23.07.2009 23:32, Sean Elble wrote:
> On 7/23/09 10:23 PM, "Eric Sandeen" <sandeen@xxxxxxxxxxx> wrote:
> > Sean Elble wrote:
> >> Hi all,
> >> 
> >> While I am aware that the current kernel implementation of XFS doesn't
> >> support mounting an IRIX filesystem with version 1 directories, I'm not so
> >> sure whether xfsdump/xfsrestore will support the dumping of an IRIX
> >> filesystem with version 1 directories.  To be more specific, I am dealing
> >> with an old disk from an Indigo2, running IRIX 6.5.6m with version 1
> >> (0x1094) directories.  I was hoping it had version 2 directories, but after
> >> finding an old SCSI card I could put in a Linux box with XFS support, I
> >> found just the opposite, obviously.  I had the old SCSI card back in its
> >> donor system (which was up-and-running) when it occurred to me that
> >> xfsdump/xfsrestore *might* be a possibility, and I can't take it (the donor
> >> system) down again unless I know I can make this work.
> >> 
> >> If anyone can give me an answer to this question, I would certainly
> >> appreciate it.  I didn't see anything in the man pages, and my Google
> >> searches have proven fruitless thus far, but I've been known to be blind on
> >> occasion.  :-)  Thanks, in advance.
> >> 
> > 
> > linux used to work with v1 dirs, though there were some problems.  It
> > never got fixed, was not critical for 99.9% of users, and got taken out.
> >  But it might work well enough to do what you need.  Go through the
> > changelogs or google, and try an older Linux kernel, perhaps ....
> > 
> > -Eric
> > 
> Looks like the version 1 directory code was removed as of June 15th, 2006,
> per this:
> http://oss.sgi.com/archives/xfs/2006-06/msg00067.html
> But another post <http://oss.sgi.com/archives/xfs/2003-07/msg00495.html> has
> a 2.4.21 kernel being used with a patch, so I'm not sure if I want to try a
> 2.6 kernel, or see if I can patch together a 2.4.x kernel on an old FC4 box
> I have laying around.  Truth be told, it's a lot of work just to blank the
> entries in /etc/shadow so I can login to a 150 MHz box again, so who knows
> if I'll even try at this point, hah.
> In any event, thanks a lot for the pointers in the right direction.

I'd guess the disc isn't very big.

You just dd it completly (for backup).

Then search for the content of the shadow-file and blank out the entry 
with a hex-editor. Make sure that you don't change the filesize, pad 
the previous/following entry with any character you have to remove.

Bis denn

Real Programmers consider "what you see is what you get" to be just as 
bad a concept in Text Editors as it is in women. No, the Real Programmer
wants a "you asked for it, you got it" text editor -- complicated, 
cryptic, powerful, unforgiving, dangerous.

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