From: "H. Peter Anvin" <hpa@zytor.com>
To: Bryan Henderson <hbryan@us.ibm.com>
Cc: Andrew Morton <akpm@digeo.com>, Andries Brouwer <aebr@win.tue.nl>,
linux-fsdevel@vger.kernel.org
Subject: Re: [Fwd: [Bug 136] New: FSID returned from statvfs always 0]
Date: Wed, 18 Dec 2002 12:18:59 -0800 [thread overview]
Message-ID: <3E00D833.7070700@zytor.com> (raw)
In-Reply-To: <OF58D9AD29.61FD1057-ON87256C93.005990BD-88256C93.005A2605@us.ibm.com>
Bryan Henderson wrote:
>
> To have _any_ value would be an overstatement. Today's FSID (always zero)
> has no value. An FSID that works only in machines where the disks never
> move would have more value than that.
>
> But as long as we're talking about designs that solve the entire problem,
> don't forget this aspect too: A perfect FSID must be stable as the
> filesystem is moved from one disk to another while the disks stay put.
> And, more importantly, must change when you replace the contents of a disk
> with a new or different filesystem.
>
I.e. it's the UUID of the filesystem (if one exists.)
-hpa
prev parent reply other threads:[~2002-12-18 20:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-03 23:53 [Fwd: [Bug 136] New: FSID returned from statvfs always 0] Andrew Morton
2002-12-04 3:11 ` Stephen Lord
2002-12-04 3:25 ` Andries Brouwer
2002-12-04 4:09 ` Andrew Morton
2002-12-04 18:00 ` Bryan Henderson
2002-12-09 22:15 ` H. Peter Anvin
2002-12-09 23:04 ` Andries Brouwer
2002-12-18 5:15 ` Andrew Morton
2002-12-18 16:25 ` Bryan Henderson
2002-12-18 20:18 ` H. Peter Anvin [this message]
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