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>
next in thread | previous in thread | raw e-mail | index | archive | help
--=-+/P+cvkImi35BVrjmzcD Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi, David, =E5=9C=A8 2005-02-15=E4=BA=8C=E7=9A=84 22:35 -0500=EF=BC=8CDavid Rhodus=E5= =86=99=E9=81=93=EF=BC=9A > > Softupdates really aren't a whole lot different from journalling. Both >=20 > 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, --=20 Xin LI <delphij delphij net> http://www.delphij.net/ --=-+/P+cvkImi35BVrjmzcD Content-Type: application/pgp-signature; name=signature.asc Content-Description: =?UTF-8?Q?=E8=BF=99=E6=98=AF=E4=BF=A1=E4=BB=B6=E7=9A=84=E6=95=B0?= =?UTF-8?Q?=E5=AD=97=E7=AD=BE=E5=90=8D=E9=83=A8?= =?UTF-8?Q?=E5=88=86?= -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQBCEsLy/cVsHxFZiIoRAvUjAJ9zSU6zZr7O/Q1D/s2uPsSsAhfKjwCgigcB UqzWwdE5jUtDSbvCzLh7Nr0= =jv2Y -----END PGP SIGNATURE----- --=-+/P+cvkImi35BVrjmzcD--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1108525810.676.21.camel>