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From: Oleg Drokin <green@linuxhacker.ru>
To: Bryan Henderson <hbryan@us.ibm.com>
Cc: linux-fsdevel@vger.kernel.org, neilb@cse.unsw.edu.au
Subject: Re: FS-specified FSID for non-device based filesystems?
Date: Fri, 14 Apr 2006 23:45:43 +0300	[thread overview]
Message-ID: <20060414204543.GE10907@linuxhacker.ru> (raw)
In-Reply-To: <OFE1D40E00.75DD4A97-ON88257150.006E4E2D-88257150.006FEAAC@us.ibm.com>

Hello!

On Fri, Apr 14, 2006 at 01:22:14PM -0700, Bryan Henderson wrote:
> When Linux added the export ID, at a time when other operating systems 
> were addressing the problem with the kind of fsid you're proposing, I 
> believe the point was that in Linux you can have multiple incompatible 
> exports of the same filesystem -- to give a client the right data, you'd 
> need to know from which export, not just which filesystem, a given 
> filehandle came.

Well, I do not see how there is a difference.
>From my reading of the code it seems that fsid is composed of device's
minor/major and export point's inode ino.

I propose to replace (if supported by fs) device's minor/major by
some unique number returned by fs itself.
Should be no worse than what we have now.

Bye,
    Oleg

  reply	other threads:[~2006-04-14 20:46 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-04-12 11:10 FS-specified FSID for non-device based filesystems? Oleg Drokin
2006-04-14 20:22 ` Bryan Henderson
2006-04-14 20:45   ` Oleg Drokin [this message]
2006-04-14 20:59     ` J. Bruce Fields
2006-04-14 21:32     ` Bryan Henderson
2006-04-14 21:41       ` Oleg Drokin
2006-04-17  0:54 ` Neil Brown
2006-04-17  3:50   ` Greg KH
2006-04-17  4:32     ` Neil Brown
2006-04-18 18:07       ` Greg KH
2006-04-19 12:15         ` Miklos Szeredi
2006-04-20 11:35           ` Al Viro
2006-04-20 11:58             ` Miklos Szeredi
2006-04-20 12:30               ` Al Viro
2006-04-20 12:43                 ` Miklos Szeredi
2006-04-17  8:00   ` Anton Altaparmakov

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