From owner-freebsd-current@FreeBSD.ORG Wed Oct 3 22:43:54 2007 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BF8D116A417 for ; Wed, 3 Oct 2007 22:43:54 +0000 (UTC) (envelope-from delphij@delphij.net) Received: from tarsier.geekcn.org (tarsier.geekcn.org [210.51.165.229]) by mx1.freebsd.org (Postfix) with ESMTP id 58FC513C480 for ; Wed, 3 Oct 2007 22:43:54 +0000 (UTC) (envelope-from delphij@delphij.net) Received: from localhost (tarsier.geekcn.org [210.51.165.229]) by tarsier.geekcn.org (Postfix) with ESMTP id 948F9EBB3D0; Thu, 4 Oct 2007 06:43:53 +0800 (CST) X-Virus-Scanned: amavisd-new at geekcn.org Received: from tarsier.geekcn.org ([210.51.165.229]) by localhost (mail.geekcn.org [210.51.165.229]) (amavisd-new, port 10024) with ESMTP id Y2Res9vnLZoR; Thu, 4 Oct 2007 06:43:49 +0800 (CST) Received: from LI-Xins-MacBook.local (71.5.7.139.ptr.us.xo.net [71.5.7.139]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by tarsier.geekcn.org (Postfix) with ESMTP id 825DDEBB334; Thu, 4 Oct 2007 06:43:44 +0800 (CST) DomainKey-Signature: a=rsa-sha1; s=default; d=delphij.net; c=nofws; q=dns; h=message-id:date:from:reply-to:organization:user-agent: mime-version:to:cc:subject:references:in-reply-to: x-enigmail-version:openpgp:content-type; b=BfLTfqgkCimiWl19UgL2r5aPCgoDZGAEuBwozRUJFm+mlEoMBJ+wih6ORnMl1/Rvc +lvg0U35VgP5lQeiHBadA== Message-ID: <47041B1D.8060900@delphij.net> Date: Wed, 03 Oct 2007 15:43:41 -0700 From: LI Xin Organization: The FreeBSD Project User-Agent: Thunderbird 2.0.0.6 (Macintosh/20070728) MIME-Version: 1.0 To: Philip Murray References: In-Reply-To: X-Enigmail-Version: 0.95.3 OpenPGP: url=http://www.delphij.net/delphij.asc Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="------------enig17C3B57F9D088E0D9DB11760" Cc: freebsd-current@freebsd.org Subject: Re: GJournal X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: d@delphij.net List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Oct 2007 22:43:54 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig17C3B57F9D088E0D9DB11760 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Philip Murray wrote: > Hi, >=20 > I've got a 3TB volume that I really really want to avoid fscks on > (they're taking 4-5hours on an exist 1.5TB volume) so Gjournal is > looking good. >=20 > Is it possible to make it only journal meta-data? Instead of data and > meta-data (ie, like XFS, ext3 by default etc), it seems like you'd take= > less of a performance hit due to not having to write all the data twice= =2E Not now. gjournal now acts as a block-level journal provider which does not distinguish between meta-data and file data. > But I understand in this case after a crash you could end up with empty= > files? (Due to the metadata being consistent but the data not? I've see= n > this happen with XFS before...) >=20 > (I have tried ZFS, but just had two kmem too small panics after 5 > minutes... this is on an amd64 machine with 8GB of RAM) Have you tried the recent -CURRENT snapshot and perhaps VM_KMEM_SIZE_MAX tuning? It would make the situation much better. Cheers, --=20 Xin LI http://www.delphij.net/ FreeBSD - The Power to Serve! --------------enig17C3B57F9D088E0D9DB11760 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHBBsdOfuToMruuMARCuE0AJ9nsXm+VqHEpB6hGBjudJBVTgs0iACeOnEj Y4KijHCUFssyk9FRn33tUOA= =Tq5V -----END PGP SIGNATURE----- --------------enig17C3B57F9D088E0D9DB11760--