From owner-freebsd-questions@FreeBSD.ORG Tue Jun 16 08:14:03 2015 Return-Path: Delivered-To: freebsd-questions@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id A3245966 for ; Tue, 16 Jun 2015 08:14:03 +0000 (UTC) (envelope-from kraduk@gmail.com) Received: from mail-wg0-x234.google.com (mail-wg0-x234.google.com [IPv6:2a00:1450:400c:c00::234]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 37230215 for ; Tue, 16 Jun 2015 08:14:03 +0000 (UTC) (envelope-from kraduk@gmail.com) Received: by wgez8 with SMTP id z8so6375982wge.0 for ; Tue, 16 Jun 2015 01:14:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=4LX21F81ls9S+q8BWtz9cd84Xc6PWWmLkzyZmqxUg7o=; b=aUu2TRCTqq3BMihnPINR2n9E2h9EhaDsJ8A/mz4lNx78tQ0vkVf3uyaI+OlvJHxqp+ ofEZo8l0huozqJ1FTEy/5LG5clKRi0I1cs9/ynx5UJn3/WyYy1Kf17y06PhfESJGciMz 087J74BgITqMVF5PVvnJ55gFDF8YheAjG8I0uJQbXhua8oO1ym8lUnj7SZBXSvmISg8w n78js3KzuxLrf6grQZRwwtQE6PHlDYe9Zzrz5+VxJc7p0oshPAfpgBvjQsFX8Dwee9ow NcdDIpsCdNbuWhD7fFqB1sXmCKVXwZuQo7PltjVcgoz5fwo8sf3hQ2I+ZhDIpom/k5Rt sfRA== MIME-Version: 1.0 X-Received: by 10.180.19.100 with SMTP id d4mr39314352wie.95.1434442441537; Tue, 16 Jun 2015 01:14:01 -0700 (PDT) Received: by 10.28.210.149 with HTTP; Tue, 16 Jun 2015 01:14:01 -0700 (PDT) In-Reply-To: <485432824.11228956.1434438820497.JavaMail.zimbra@logitravel.com> References: <9C96EB4B-A230-4A26-BDC3-067367A61E34@shire.net> <378461483.10441535.1434361136704.JavaMail.zimbra@logitravel.com> <485432824.11228956.1434438820497.JavaMail.zimbra@logitravel.com> Date: Tue, 16 Jun 2015 09:14:01 +0100 Message-ID: Subject: Re: ZFS in a VM? From: krad To: Raimund Sacherer Cc: "Chad Leigh Shire.Net LLC" , FreeBSD Questions Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Jun 2015 08:14:03 -0000 Unless you are really squeezing the ram it shouldnt be a problem and by that i mean going below 1 GB. Its also best to stay away from 32 bit if you want to run zfs. On 16 June 2015 at 08:13, Raimund Sacherer wrote: > > > Good morning. You don=E2=80=99t want to go start mucking with sysctl le= vel things > > until you have identified issues. Each installation is different, > especially > > inside a VM. For example, ours are not VMWare based and probably perfor= m > > totally differently at the level ZFS uses. Try a stock install and see > what > > issues you run up against. > > Good morning to you to :-) > > Yeah, I thought there may be some recommended tuneables for ZFS in a > virtualised setting. I read about problems with ARC cache size on low > memory / low free memory systems which could lead to a panic if the ARC > size grows to some kernel memory limit, so restricting the ARC cache size > may be needed. But you are right, it seems I just have to throw myself in > to the water and find out if I can swim. > > Thank you, > Best > Ray > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org"