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Re: SGI Version 1 XFS on Linux

To: Dave Chinner <david@xxxxxxxxxxxxx>, "Scott, Edmund J @ SSG - Link" <edmund.scott@xxxxxxxxxx>
Subject: Re: SGI Version 1 XFS on Linux
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Wed, 06 May 2015 22:05:49 -0500
Cc: Ben Myers <bpm@xxxxxxx>, "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20150506215816.GE4327@dastard>
References: <2994A55DE0FBBE41B8FE47F9885D74221BC0569C@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20150506171222.GA22744@xxxxxxx> <2994A55DE0FBBE41B8FE47F9885D74221BC056F3@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20150506215816.GE4327@dastard>
On 5/6/15 4:58 PM, Dave Chinner wrote:
> On Wed, May 06, 2015 at 07:47:51PM +0000, Scott, Edmund J @ SSG -
> Link wrote:
>> Hi,
>>
>> We are in a thunderstorm right now so we had to shut down, be a
>> while until we get things back up. We're in Utah with a rolling
>> t-storm coming through. 
>>
>> We did find documentation that XFS version 1 was pulled out of the
>> linux kernel around or after kernel 2.4. and the messages kind of
>> support that. I'm looking into digging up an old Red Hat OS to see
>> if it is old enough to have the version 1 XFS in it.
> 
> You'd be talking about the directory version, then, not the version
> of the filesystem? Irix 6.2 introduced Version 4 filesystems, but
> version 2 directories didn't come along until a couple of years
> later. See Slides 6-7 here:
> 
> http://events.linuxfoundation.org/sites/events/files/slides/dchinner-xfs-there-and-back.pdf
> 
> As it is, the dirv1 removal commit says "Never functioned on Linux,
> just pure bloat".
> 
> http://oss.sgi.com/cgi-bin/gitweb.cgi?p=archive/xfs-import.git;a=commitdiff;h=b84149405b9c2ecbc445d2684053e4acc03342ee
> 
> So I suspect that the only way you are going to be able to read
> those filesystems is with an Irix machine....

IIRC it worked, FSVO "worked" - I forget the issues, but you will
at least be able to mount it and get some data, I think.

-Eric

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