Date: Thu, 03 Mar 2005 13:18:45 +0100 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: ticso@cicely.de Cc: hackers@freebsd.org Subject: Re: FUD about CGD and GBDE Message-ID: <7153.1109852325@critter.freebsd.dk> In-Reply-To: Your message of "Thu, 03 Mar 2005 13:04:22 %2B0100." <20050303120421.GW86348@cicely12.cicely.de>
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In message <20050303120421.GW86348@cicely12.cicely.de>, Bernd Walter writes: >No matter what disk you take - writes never have been atomic. >The major difference I see is that you get a read error back in >the disk failure case, while such a crypto failure produces more or >less random data without any error. >Mounting unclean filesystems rw for bg_fsck can be considered >dangerous with such unexpected data corruption. >And how would you know that a restore from backup is required for >a damaged file? 100% true. The trouble is that it would cost a lot in performance and a doubling in metadata to protect yourself against this. -- 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.
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