linux-kernel - Re: [PATCH] Support ISO-9660 RockRidge v. 1.12 V2

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Message-ID: <aa4c40ff0610190839l64c56966w39b0d8df920215f@mail.gmail.com>
Date:	Thu, 19 Oct 2006 08:39:46 -0700
From:	"James Lamanna" <jlamanna@...il.com>
To:	"Joerg Schilling" <Joerg.Schilling@...us.fraunhofer.de>
Cc:	schilling@...us.fraunhofer.de, linux-kernel@...r.kernel.org,
	ismail@...dus.org.tr
Subject: Re: [PATCH] Support ISO-9660 RockRidge v. 1.12 V2

On 10/19/06, Joerg Schilling <Joerg.Schilling@...us.fraunhofer.de> wrote:
> James Lamanna <jlamanna@...il.com> wrote:
>
> >
> > Joerg Schilling pointed out that RockRidge v. 1.12 extends the PX entry.
> > This patch stores the inode number that is now included.
> > He has also mentioned 'implementing support for new inode features' wrt to a
> > mkisofs fingerprint. Perhaps that will come at a later date.
> > Regardless, that can be built on this patch since now the inode number gets
> > stored.
> >
> > This patch has been tested against mounting an ISO-9660 image in
> > loopback that supports RockRidge v. 1.12 (thank you to Joerg for a beta
> > of mkisofs that does this).
> > This should apply against the latest git.
>
> Let me add some more notes:
>
> The linux NFS server interface is unnecessarily complex and will make it
> a lot harder than a "single line change" to make the filesystem correct in case
> Linux likes to benefit from the inode numbers in RRip 1.12 to support correct
> hardlinks.
>
> If you believe that you understand the NFS server issues, you should fix the
> code so that NFS exports will work correctly after the change. If you don't know
> what's going on there, you may need to spend a few days with testing and
> debugging.
>
> Note that you need to be able to "re-open" any file from a NFS file handle only...
> There are many constraints that need to be redeemed and the new algorithm needs
> to work correctly with old and with new media.

Hopefully I will have some time to test this box as a NFS server soon.
Unfortunately, hacking on Linux is not exactly my full-time job at the
moment.
Anyways, the patch should probably be put on hold until these
potential issues are addressed. Everything should still function fine
without any RR 1.12 patch.

-- James
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