From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1BmGQp-0001sF-ST for user-mode-linux-devel@lists.sourceforge.net; Sun, 18 Jul 2004 11:30:39 -0700 Received: from smtp.wp.pl ([212.77.101.160]) by sc8-sf-mx1.sourceforge.net with esmtp (TLSv1:AES256-SHA:256) (Exim 4.34) id 1BmGQp-0007Xw-De for user-mode-linux-devel@lists.sourceforge.net; Sun, 18 Jul 2004 11:30:39 -0700 Received: from lodz106.vline.pl (HELO 172.16.13.24) (sikkh@[212.191.130.106]) (envelope-sender ) by smtp.wp.pl (WP-SMTPD) with SMTP for ; 18 Jul 2004 20:30:30 +0200 From: Piotr Neuman MIME-Version: 1.0 Content-Type: Multipart/Mixed; boundary="Boundary-00=_YHs+AobBT52L8E8" Message-Id: <200407182030.48890.sikkh@wp.pl> Subject: [uml-devel] Humfs metadata api tdb backend for 2.4.26-um2 Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Sun, 18 Jul 2004 20:30:48 +0200 To: user-mode-linux-devel@lists.sourceforge.net --Boundary-00=_YHs+AobBT52L8E8 Content-Type: text/plain; charset="iso-8859-2" Content-Transfer-Encoding: 7bit Content-Disposition: inline Sorry for copying almost "as is" my previous tdb backend announcement, but I don't really have much more to say ;-). I've been working on metadata backend that would use tdb (meta_tdb). It's advantages over meta_fs include: - proper handling of "metadata" named files and dirs (Jeff Dike fixed it but it's still not "clean" imo, but that's the handicap of trying to implement as metadata files), - compactness (no directory/files structure overhead and storing data in binary), Performace is yet to be tested extensively and compared to meta_fs. There are also additions to humfs features: - humfs stores file/dir access modes now (fixes some chmod problems, Jeff Dike made it part of -um2 so it's by default in UML now), - humfs automatically initializes mount dir if only valid "superblock" file is present in it (humfsify for tdb is not yet ready ;), - humfs now supports unmountig (neceseary fo meta_tdb). Example "superblock" is attached. To try meta_fs backend with it just change "tdb" to "shadow_fs". To mount humfs: mount none -t humfs -o The patch is against UML release ver. 2.4.26-2. This release is much better than 2.4.26-1 when it comes to stability. The patch is available here: http://kem.p.lodz.pl/~peter/humfs-2.4.26-2-meta_tdb-1.patch.bz2 Humfs seems usable now (both meta_fs and meta_tdb can be used as root filesystem and boot), but as I tested it there are still issues, so it shouldn't be used in production systems. I will try to work them out (especially as Jeff is away for OLS, having fun I presume ;-). Good luck and have fun testing... --Boundary-00=_YHs+AobBT52L8E8 Content-Type: text/plain; charset="us-ascii"; name="superblock" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="superblock" version 1 used 394962944 total 734003200 metadata tdb --Boundary-00=_YHs+AobBT52L8E8-- ------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel