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List:       freebsd-hackers
Subject:    Re: Slow disk access while rsync - what should I tune?
From:       Matthew Dillon <dillon () apollo ! backplane ! com>
Date:       2010-10-31 20:44:25
Message-ID: 201010312044.o9VKiPwG049615 () apollo ! backplane ! com
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:> and the output produced by dump is not live-accessible whereas a
:> snapshot / live filesystem copy is.  That makes the dump fairly
:> worthless for anything other than catastrophic recovery.
:
:Ever heard of "restore -i"?

    Have you ever tried to restore a single file from a 2 Terrabyte dump
    file ?  Or even better, if you are using incremental dumps, try
    restoring a single file from 6 dump files.

    I'm not saying that dump/restore is completely unusable, I'm saying
    that it MOSTLY unusable for the use cases people have today for backups.

    There is a certain convenience to being able to restore a file from
    a live backup in a few seconds verses having to struggle with large
    multi-layered incremental dump/restore files that were designed to be
    spooled off to tape units.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>
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