Date: Tue, 20 Jan 2004 19:42:17 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Peter Schuller <peter.schuller@infidyne.com> Cc: freebsd-questions@freebsd.org Subject: Re: Unexpected soft update inconsistency Message-ID: <20040121034217.GB29338@xor.obsecurity.org> In-Reply-To: <200401200031.31026.peter.schuller@infidyne.com> References: <200401200031.31026.peter.schuller@infidyne.com>
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--l76fUT7nc3MelDdI Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jan 20, 2004 at 12:31:30AM +0100, Peter Schuller wrote: > Do soft updates, or do they not, algorithmically guarantee filesystem=20 > meta-data consistency in the event of a crash? If you have a power failure or similar unclean shutdown, then SU guarantees consistency. If there is a kernel panic or hardware failure, all bets are off, because there is no way to be sure that the kernel was writing the correct bits to the hardware prior to the crash, or that the hardware was writing the correct bits to disk. Kris --l76fUT7nc3MelDdI Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFADfUYWry0BWjoQKURAi5EAKCTwFu1XUxu1pEmar338k0ytPYrowCdFVgm JUGBzmTDp01/I9RlRforc/o= =kpdj -----END PGP SIGNATURE----- --l76fUT7nc3MelDdI--
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