Date: Fri, 06 Jul 2007 11:25:13 +0200 From: Ivan Voras <ivoras@fer.hr> To: freebsd-geom@freebsd.org Subject: Re: gjournal size reservation? Message-ID: <f6l1pq$l4s$1@sea.gmane.org> In-Reply-To: <468BB473.304@vwsoft.com> References: <468BB473.304@vwsoft.com>
next in thread | previous in thread | raw e-mail | index | archive | help
This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig30FB7E062D6BCD30B90D44F5 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Volker wrote: > hej, >=20 > I've never played with gjournal before and would like to try it to get > protection of the root-fs, var and tmp. I'm wondering if someone can > answer these simple questions: >=20 > 1) As I understand, gjournal does not need to run on a filesystem but > is also able to journal a whole slice. What are the pro's and con's > for running gjournal on a whole slice or per filesystem? In either case the journaling is "per slice", the "on a filesystem" mode = is mostly just a convenience shortcut for the users so they don't need=20 to set a gjournal slice separately. > 1a) if journaling per filesystem, is gjournal able to use just one > journaling area for more than one filesystem? Almose certainly no. > 2) How much space is required for journaling? I'm having space to get > the journal into it's own slice or at least a bsd label. > slice 2 (8g) can be used for spare space and for gjournal but I'm > unsure how much space to give gjournal. The calculation for this involves disk bandwidth multiplied by the=20 "journal flush interval", multiplied by two because there are two=20 journal areas, and it's usually recommended that it should be at least 1 = GB. --------------enig30FB7E062D6BCD30B90D44F5 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFGjgp5ldnAQVacBcgRAp2+AKC7c49cpiGxJ8dVRww7/W99AQSMKwCeJgsp 1zr2+h7Dzh1NnBnAZeQJ4TU= =eGVP -----END PGP SIGNATURE----- --------------enig30FB7E062D6BCD30B90D44F5--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?f6l1pq$l4s$1>