From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q11EV6l2254693 for ; Wed, 1 Feb 2012 08:31:08 -0600 Received: from smtp4-g21.free.fr (smtp4-g21.free.fr [212.27.42.4]) by cuda.sgi.com with ESMTP id ye1kreNPeIDCAub8 for ; Wed, 01 Feb 2012 06:31:04 -0800 (PST) Date: Wed, 1 Feb 2012 15:31:00 +0100 From: Emmanuel Florac Subject: Re: File system remain unresponsive until the system is rebooted. Message-ID: <20120201153100.41d1586d@harpe.intellique.com> In-Reply-To: <20265.12473.715630.925704@tree.ty.sabi.co.UK> References: <20120131013124.GE9090@dastard> <4F27AE92.9060003@hardwarefreak.com> <20120131120859.1f1d6a17@harpe.intellique.com> <20265.12473.715630.925704@tree.ty.sabi.co.UK> Mime-Version: 1.0 List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Peter Grandi Cc: Linux fs XFS Le Wed, 1 Feb 2012 12:31:53 +0000 pg_xf2@xf2.for.sabi.co.UK (Peter Grandi) =E9crivait: > In that case I eliminated all but the root filetree VM disks and > replaced them with filetrees exported via NFS from XFS on the > underlying VM host itself (that is not over the network). > = > This improved performance tremendously (in part because in most VM > layers virtual NICs are more efficient than virtual disk adapters) > but in particular much faster check/repair and much reduced crazy > latencies during backups, because I could run check/repair and the > backups *on the real machine*, where XFS performed a lot better > without the VM overheads and "skewed" latencies. > = Thank you for all the good info. To add a last note, I use iSCSI to export lvm LVs to VMs from the host, and it works fine. Exporting files living on an XFS works well enough, too, though slightly slower. It can be useful particularly for windows VM, because many windows app really behave poorly with network shares (or refuse to use them altogether). -- = ------------------------------------------------------------------------ Emmanuel Florac | Direction technique | Intellique | | +33 1 78 94 84 02 ------------------------------------------------------------------------ _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs