Date: Tue, 02 Oct 2001 19:12:49 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: nate@yogotech.com (Nate Williams) Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: dump/restore and DIRPREF Message-ID: <4959.1002042769@critter.freebsd.dk> In-Reply-To: Your message of "Tue, 02 Oct 2001 11:05:00 MDT." <15289.62396.178582.398770@nomad.yogotech.com>
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In message <15289.62396.178582.398770@nomad.yogotech.com>, Nate Williams writes : >After Kris's recent report of 'massive speedups' using dirpref, I've >been toying with the idea of backing up my box, and then restoring them. > >However, backup/restore are so much faster than doing a tar/untar. > >If I do a backup of my FS, wipe the disk, will the 'restore' cause the >same (ineffecient) directory layout to appear on disk? > >I wouldn't think so since the directory layout is controlled by the >kernel, but I do know that dump/restore are much lower-layer tools than >tar, so they may possibly have layout information embedded in them. > >Is my assumption correct? no. Dump reads the raw device and finds everything by hand. Restore (like tar!) just open/write/close/chown regular files. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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