From owner-freebsd-fs@FreeBSD.ORG Sun Dec 20 15:53:30 2009 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id ADA68106566C for ; Sun, 20 Dec 2009 15:53:30 +0000 (UTC) (envelope-from hali@datapipe.com) Received: from EXFESMQ02.datapipe-corp.net (exfesmq02.datapipe-corp.net [64.106.130.125]) by mx1.freebsd.org (Postfix) with ESMTP id 70F718FC08 for ; Sun, 20 Dec 2009 15:53:30 +0000 (UTC) Received: from EXMBSMQ01.datapipe-corp.net ([64.106.130.123]) by EXFESMQ02.datapipe-corp.net ([64.106.130.125]) with mapi; Sun, 20 Dec 2009 10:43:13 -0500 From: Hussain Ali To: Thomas Burgess , Attila Nagy Date: Sun, 20 Dec 2009 10:43:13 -0500 Thread-Topic: Plans for Logged/Journaled UFS Thread-Index: AcqBbo7DO9fwv41ZSJWRIxzkGq3YzgAGdj/H Message-ID: References: <20091030223225.GI5120@datapipe.com> <4AEB6D79.5070703@feral.com> <4B2E0FA9.1050003@fsn.hu> <4B2E13E9.9000108@fsn.hu>, In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Cc: "freebsd-fs@freebsd.org" Subject: RE: Plans for Logged/Journaled UFS 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: Sun, 20 Dec 2009 15:53:30 -0000 _______________________________________ From: owner-freebsd-fs@freebsd.org [owner-freebsd-fs@freebsd.org] On Behalf= Of Thomas Burgess [wonslung@gmail.com] Sent: Sunday, December 20, 2009 7:17 AM To: Attila Nagy Cc: freebsd-fs@freebsd.org Subject: Re: Plans for Logged/Journaled UFS i remember reading that NFS needs tuning with ZFS even on solaris so you might want to look into that....i'm not an expert though. I CAN say this though. I have a machine with 12 drives and 8gb ram that i use for samba. FreeBSD 8.0 ZFS v13 It has only 10 or so clients but it has no problem maxing out 2 gigabit lines and it never freezes. It took some tuning for samba but it works great. On Sun, Dec 20, 2009 at 7:09 AM, Attila Nagy wrote: > For that problem, it can be true, the machine in speak has only 1 GB RAM > (i386), although 8 disks. > The freeze is a different beast, I've got it on 32-64 GB RAM machines (wi= th > NFS), and on 8 GB machines serving stuff with ftp/http/rsync/etc (no NFS)= . > I'm not sure that the NFS and the non-NFS case is the same though. > > Thomas Burgess wrote: > >> >> I think it depends on hardware and setup. I've noticed the "zfs problem= " >> with SOME machines when it comes to rtorrent (the rtorrent process will = be >> stuck "waiting for disk" but on other machines it's fine. >> The machines i've had the most problem with are single drive less than 2 >> gb ram. >> >> I've got rtorrent and zfs working fine on plenty of machines with 2-3 ha= rd >> drives and 4-8 gb ram. >> >> On Sun, Dec 20, 2009 at 6:51 AM, Attila Nagy > bra@fsn.hu>> wrote: >> >> Matthew Jacob wrote: >> >> Hussain Ali wrote: >> >> >> ZFS doesnt suffice for may use cases - so just wondering >> if this is in >> the works. >> >> >> Which use cases can you name? >> >> Reliable data storage. :( >> >> Sadly, ZFS in FreeBSD is still very far from being stable. For >> example I have NFS servers running on ZFS, and they freeze about >> every week. It seems it's related to NFS. >> I can't even get to the debugger. After sending an NMI, the kernel >> writes "NMI ... going to debugger" eight times (those machines >> have 8 CPU cores) and nothing happens, I can only reset. >> >> Another machine just looses ZFS access (all processes stuck in IO) >> on i386 if I run rtorrent with unlimited bandwidth with some >> torrents, or some disk intensive spam filtering. Access to UFS >> filesystems are still OK. >> >> Also, running UFS and ZFS seems to have problems in 8-STABLE with >> UFS eating out memory from ZFS. >> _______________________________________________ >> freebsd-fs@freebsd.org mailing list >> >> http://lists.freebsd.org/mailman/listinfo/freebsd-fs >> To unsubscribe, send any mail to >> "freebsd-fs-unsubscribe@freebsd.org >> " >> >> >> > ZFS is great for data warehousing and non high performance/high concurrent = operations (Seen this on Solaris and FreeBSD). I have about 350TB in FreeB= SD's ZFS and its been running very stable but this is a data warehouse and = I am not running off the shelf components either (HP DL 385's, Nexsan Satab= easts). Ever use ZFS as a target for a replication for large and active My= SQL DB, you would notice days worth of lag within a week (on same gear as t= he primay!). My cases maybe on the non typical average FreeBSD user usage, = but for any large hosting environment I would assume its similar. Anyway seems like we may see a journaled UFS in FreeBSD sometime soon. I ho= pe the changes are minimal so its MFC'ed back into [78]-Stable. http://jeffr-tech.livejournal.com/22716.html This message may contain confidential or privileged information. If you ar= e not the intended recipient, please advise us immediately and delete this = message. See http://www.datapipe.com/emaildisclaimer.aspx for further info= rmation on confidentiality and the risks of non-secure electronic communica= tion. 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