[8397] in Info-AFS_Redistribution
Re: Backups using commercial products
daemon@ATHENA.MIT.EDU (Ken Hornstein)
Wed Jan 3 19:15:42 2001
Message-Id: <200101032352.f03NqBZ12184@ginger.cmf.nrl.navy.mil>
To: Mitch Collinsworth <mitch@ccmr.cornell.edu>
Cc: info-afs@transarc.com, <openafs-devel@openafs.org>
In-Reply-To: Your message of "Tue, 02 Jan 2001 22:59:21 EST."
<Pine.LNX.4.10.10101022201440.10684-100000@ruby.ccmr.cornell.edu>
Date: Wed, 03 Jan 2001 18:52:10 -0500
From: Ken Hornstein <kenh@cmf.nrl.navy.mil>
>> What I wonder is - how hard would it be to access the contents of an AFS
>> volume from a file server, without going through AFS itself - i.e. by direct
>> file access - sortof a really fast 'vos dump' equivalent.
>
>Good question. Now that we have the source I'm sure it would be
>possible to figure out the structure and read it directly from
>disk. Maybe somebody's even done this already.
I've done part of that already (dumptool takes a reasonable stab at
documenting the dump structure). However ... I'm not completely convinced
that it will be _that_ much faster, since I suspect the bottleneck
is reading the data off of the disk (lots of seeks). But hey, I could
be wrong.
--Ken
