Date: Wed, 16 Feb 2005 11:50:10 +0800 From: Xin LI <delphij@frontfree.net> To: drhodus@machdep.com Cc: Scott Long <scottl@freebsd.org> Subject: Re: Journalling FS and Soft Updates comparision Message-ID: <1108525810.676.21.camel@spirit> In-Reply-To: <fe77c96b0502151935306e9aa1@mail.gmail.com> References: <20050210030119.GD29396@alzatex.com> <fe77c96b0502151935306e9aa1@mail.gmail.com>
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[-- Attachment #1 --] Hi, David, 在 2005-02-15二的 22:35 -0500，David Rhodus写道： > > Softupdates really aren't a whole lot different from journalling. Both > > No, journalling and soft updates are orthogonal technologies; they > do not solve the same problem space, although there is some minor > overlap. Soft updates is not able to solve all the problems which > journaling can. Would you please give some examples? I think a file system journalling is different from what we have seen in applications, e.g. databases, since the primary goal of having a journal is to make the file system recoverable to last checkpoint, is that correct, or maybe I have missed something? Thanks! Cheers, -- Xin LI <delphij delphij net> http://www.delphij.net/ [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQBCEsLy/cVsHxFZiIoRAvUjAJ9zSU6zZr7O/Q1D/s2uPsSsAhfKjwCgigcB UqzWwdE5jUtDSbvCzLh7Nr0= =jv2Y -----END PGP SIGNATURE-----
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