Date: Wed, 16 Apr 2008 22:30:02 +0200 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-questions@freebsd.org Subject: Re: UFS2 Journaling implementation detail Message-ID: <fu5nkb$3ib$1@ger.gmane.org> In-Reply-To: <832841.44970.qm@web57004.mail.re3.yahoo.com> References: <832841.44970.qm@web57004.mail.re3.yahoo.com>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigA265539986AEDD0A43876096 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Unga wrote: > Hi all >=20 > I'm looking for papers or documentation covering > details of the UFS2 Journaling implementation of the > FreeBSD. >=20 > Please give me links to them if you guys know any. >=20 > Many thanks in advance. There's no such thing as UFS2 Journalling in FreeBSD (yet). There's=20 "gjournal" which is journaling on the data layer (below the file system, = and only with very limited integration with the file system). This=20 implementation is not documented (except for usage here:=20 http://www.freebsd.org/cgi/man.cgi?query=3Dgjournal&manpath=3DFreeBSD+7.0= -RELEASE),=20 but there's a small (and very old) high-level overview in my proposal on = which the current gjournal is based, here:=20 http://wiki.freebsd.org/gjournal_proposal . Ignore the bits about=20 "delay-commit". See also here:=20 http://docs.freebsd.org/cgi/getmsg.cgi?fetch=3D3624+0+/usr/local/www/db/t= ext/2006/freebsd-geom/20060625.freebsd-geom --------------enigA265539986AEDD0A43876096 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFIBmHKldnAQVacBcgRAk6UAJ95NrN0k/rFg2a9AkCoHilIcXLtjgCfVwxK q6aKP0Zn4H2XMlzD5H0Vdh8= =3nXw -----END PGP SIGNATURE----- --------------enigA265539986AEDD0A43876096--
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