From owner-freebsd-fs@FreeBSD.ORG Tue Aug 9 16:29:10 2005 Return-Path: X-Original-To: freebsd-fs@freebsd.org Delivered-To: freebsd-fs@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9E48616A41F for ; Tue, 9 Aug 2005 16:29:10 +0000 (GMT) (envelope-from justin.hopper@offerfusion.com) Received: from offerfusion.com (offerfusion.com [65.39.221.33]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2EE7F43D46 for ; Tue, 9 Aug 2005 16:29:10 +0000 (GMT) (envelope-from justin.hopper@offerfusion.com) Received: (qmail 12633 invoked from network); 9 Aug 2005 16:26:47 -0000 Received: from offerfusion.com (HELO ?192.168.1.2?) (justin.hopper@offerfusion.com@65.39.221.33) by offerfusion.com with SMTP; 9 Aug 2005 16:26:47 -0000 From: Justin Hopper To: freebsd-fs@freebsd.org Content-Type: text/plain Date: Tue, 09 Aug 2005 09:29:07 -0700 Message-Id: <1123604947.3229.82.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.0.4 (2.0.4-4) Content-Transfer-Encoding: 7bit Subject: unionfs umount problem X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Aug 2005 16:29:10 -0000 Hello, (I had posted this to -hackers, but -fs is probably a better place) I had emailed a question to the -hackers list a few months ago, asking what the current status was on unionfs and whether it was now somewhat stable, since the man page still reports it as broken and without a maintainer. Some people on the list had reported that they had been using unionfs without any problems for a few releases now, so I thought I would try merging some of what we do with jails into a model using unionfs and see if I ran into any problems. The initial tests went fine of mounting an empty vnode, which would represent client disk space, and mounting a unionfs mount of a complete world into the vnode and starting the jail with this unionfs mounted as / inside the jail. The system runs fine, but I ran into a problem when taking it down. The system calls /etc/rc.shutdown, then kills the remaining processes from the host environment, then umounts /proc and /dev. No problems. But when the unionfs is called for umount, it reports EBUSY, and never releases. Forcing it to umount with "-f" hangs the calling process, never to return. Even upon system shutdown or reboot, the process will not terminate, and will even prevent the box from rebooting sometimes. I've checked that no processes are left in the jail and the prison itself seems to be fully collapsed. I also checked open file handles with fstat and lsof. I can't seem to find anything running that would be tying up the mount point. Could it be that something called vfs_busy on the mountpoint, then terminated and never released it? Is there any tools available to check details like this? Or even, to remove such a bit from the mount so that it can be umounted safely? A few other side notes on unionfs, it seems pretty solid other than the above and the white-out support (if unionfs is the lower layer and vnode is the top layer, you can "delete" files that only exist in the lower layer and they do not show up in the upper vnode layer anymore, but are still intact in the lower unionfs layer) is nice, though that's probably a feature of ufs since ufs is controlling the upper layer. A completely different question: We are thinking of removing the use of vnodes to use as client disk space but need some way to control their disk space usage. Is there such a thing as directory quotas? I'm sure somebody must have asked this before, but I've never heard mention of it. I assume there must be some reason to avoid it, or somebody would have put this in by now. Thanks for any suggestions. -- Justin Hopper justin.hopper@offerfusion.com OfferFusion, Inc. AIM: OF Justin 800.618.6838 x.702 From owner-freebsd-fs@FreeBSD.ORG Wed Aug 10 05:55:59 2005 Return-Path: X-Original-To: freebsd-fs@freebsd.org Delivered-To: freebsd-fs@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1BB8316A939; Wed, 10 Aug 2005 05:55:07 +0000 (GMT) (envelope-from wwqbggnfyih@dkinet.com) Received: from mx1.b-one.net (220-203-246-201.adsl.terra.cl [201.246.203.220]) by mx1.FreeBSD.org (Postfix) with ESMTP id A4E7C46007; Wed, 10 Aug 2005 04:46:56 +0000 (GMT) (envelope-from wwqbggnfyih@dkinet.com) From: "Tara English" To: Date: Tue, 09 Aug 2005 21:21:53 -0800 Message-id: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7Bit X-Mailer: Microsoft CDO for Windows 2000 Thread-index: P0wP0_86cV6_420+tmFsL6c9fy1x08E97DQ== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.5[2].3[4].2[4] X-OriginalArrivalTime: Tue, 09 Aug 2005 21:21:53 -0800 (UTC) FILETIME=[h4at6c9:h42Yl86] Subject: Will this MicroCap's Shares Go Higher? 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To cance| by mai| or for any other subscription issues, rep|y p|ease to: daily_tip43@ yahoo.com (c) 2005 Investment News|etter A|| Rights Reserved From owner-freebsd-fs@FreeBSD.ORG Fri Aug 12 21:55:15 2005 Return-Path: X-Original-To: fs@freebsd.org Delivered-To: freebsd-fs@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4D07A16A420 for ; Fri, 12 Aug 2005 21:55:15 +0000 (GMT) (envelope-from rick@snowhite.cis.uoguelph.ca) Received: from ccshst09.cs.uoguelph.ca (ccshst09.cs.uoguelph.ca [131.104.96.18]) by mx1.FreeBSD.org (Postfix) with ESMTP id A50DF43D53 for ; Fri, 12 Aug 2005 21:54:59 +0000 (GMT) (envelope-from rick@snowhite.cis.uoguelph.ca) Received: from snowhite.cis.uoguelph.ca (snowhite.cis.uoguelph.ca [131.104.48.1]) by ccshst09.cs.uoguelph.ca (8.13.1/8.13.1) with ESMTP id j7CLsruh015891; Fri, 12 Aug 2005 17:54:53 -0400 Received: (from rick@localhost) by snowhite.cis.uoguelph.ca (8.9.3/8.9.3) id RAA50558; Fri, 12 Aug 2005 17:55:10 -0400 (EDT) Date: Fri, 12 Aug 2005 17:55:10 -0400 (EDT) From: rick@snowhite.cis.uoguelph.ca Message-Id: <200508122155.RAA50558@snowhite.cis.uoguelph.ca> To: fs@freebsd.org X-Scanned-By: MIMEDefang 2.44 Cc: egronke@panasas.com, openbsd-nfsv4@sfobug.org Subject: new FreeBSD nfsv4 tarballs X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 Aug 2005 21:55:15 -0000 I've put new tarballs for the nfsv4 server for FreeBSD up anonymous ftp. They include fixes for the race condition found by Kris Kenneway and a few other tweaks. ftp://ftp.cis.uoguelph.ca/pub/nfsv4 and the files are: nfsv4-fullkern-FreeBSD5.4.tar.gz nfsv4-fullkern-FreeBSD6.0-BETA2.tar.gz nfsv4-utils-FreeBSD6.0-BETA2.tar.gz (FreeBSD5.4 still uses nfsv4-utils.tar.gz) Good luck with it, rick