From owner-freebsd-net@FreeBSD.ORG Thu Dec 18 23:58:06 2014 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 43807776 for ; Thu, 18 Dec 2014 23:58:06 +0000 (UTC) Received: from esa-jnhn.mail.uoguelph.ca (esa-jnhn.mail.uoguelph.ca [131.104.91.44]) by mx1.freebsd.org (Postfix) with ESMTP id 099C81F21 for ; Thu, 18 Dec 2014 23:58:05 +0000 (UTC) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AtoEAEFnk1SDaFve/2dsb2JhbABbg1hYBIMCwxIOhSRKAoE3AQEBAQF9hAwBAQEDAQEBASArIAsbGAICDRkCKQEJJgYIBwQBHASIAwgNuSOWLQEBAQEBAQEBAQEBAQEBAQEBAQEBGIEhjESBPAEBGzQHgmiBQQWJQ4gFgxyDIzCJeIJVgzgihAogMQEGfAkXBB5+AQEB X-IronPort-AV: E=Sophos;i="5.07,604,1413259200"; d="scan'208";a="177827528" Received: from muskoka.cs.uoguelph.ca (HELO zcs3.mail.uoguelph.ca) ([131.104.91.222]) by esa-jnhn.mail.uoguelph.ca with ESMTP; 18 Dec 2014 18:57:58 -0500 Received: from zcs3.mail.uoguelph.ca (localhost.localdomain [127.0.0.1]) by zcs3.mail.uoguelph.ca (Postfix) with ESMTP id E0561AEA32; Thu, 18 Dec 2014 18:57:58 -0500 (EST) Date: Thu, 18 Dec 2014 18:57:58 -0500 (EST) From: Rick Macklem To: "Russell L. Carter" Message-ID: <156986383.574215.1418947078905.JavaMail.root@uoguelph.ca> In-Reply-To: <5493040A.6040209@pinyon.org> Subject: Re: compiling on nfs directories MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [172.17.95.10] X-Mailer: Zimbra 7.2.6_GA_2926 (ZimbraWebClient - FF3.0 (Win)/7.2.6_GA_2926) Cc: freebsd-net@freebsd.org X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Dec 2014 23:58:06 -0000 Russell L. Carter wrote: > > > On 12/18/14 08:37, Adam Vande More wrote: > > On Thu, Dec 18, 2014 at 9:29 AM, Alan Somers > > wrote: > >> > >> On Wed, Dec 17, 2014 at 6:54 PM, Russell L. Carter > >> > >> wrote: > >>> On 12/17/14 18:30, Adam McDougall wrote: > >>>> > >>>> On 12/17/2014 19:47, Russell L. Carter wrote: > >>>>> > >>>>> > >>>>> > >>>>> On 12/17/14 16:07, Rick Macklem wrote: > >>>> > >>>> > >>>>>> If this is using an exported ZFS volume, it would be nice if > >>>>>> you > >>>>>> could do the same test using an exported UFS file system, to > >>>>>> see if > >>>>>> this is ZFS related. > >>>>> > >>>>> > >>>>> It is indeed using exported ZFS filesystems, but unfortunately > >>>>> I have > >>>>> no USF filesystems available to test. > >>>>> > >>>>> Russell > >>>> > >>>> > >>>> Can you create a zvol, newfs it with ufs and export it? > >>> > >>> > >>> Maybe. I would love to help if I can, w/o disrupting my existing > >>> carefully planned physical disk layouts. I'm a zfs novice here, > >>> do I > >>> need free space unallocated to existing zpools, or can I shrink > >>> an > >>> existing pool? (assuming that zfs can transmute lead into gold, > >>> with > >>> the right incantations). I have plenty of "free" space allocated > >>> to > >>> existing pools that span my physical drives. > >>> > >>> If I have to add a physical drive (that's possible, but it will > >>> be a > >>> slow drive sitting on my shelf) then I need to wait until I get > >>> back > >>> from holiday travels. > >> > >> > >> You don't need to screw with your pools at all. A zvol is like a > >> managed like a ZFS filesystem, except it's a block device. You > >> can > >> create one and mount it with a command like this: > >> zfs create -V 8g mypool/myvol > >> newfs [options] /dev/mypool/myvol > >> mount /dev/mypool/myvol /mnt > > > > > > Using a flash drive or temporary drive seems like a much more > > comprehensive > > test as you can fully eliminate ZFS from the picture. Which is the > > point > > of the exercise. > > Btw, avg@ just MFC'd r275401 which is a 1 line ZFS patch that helps to update time stamps. This one line patch might be worth a try? https://svnweb.freebsd.org/base/head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c?r1=274337&r2=275401 rick > > Ok, good suggestions, noted, and thanks! Unfortunately I'm going > to have to pick this up when I get back. > > Russell > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to > "freebsd-net-unsubscribe@freebsd.org" >