From owner-freebsd-questions@FreeBSD.ORG Tue Apr 8 17:41:31 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 68A8E1065673 for ; Tue, 8 Apr 2008 17:41:31 +0000 (UTC) (envelope-from biancalana@gmail.com) Received: from ti-out-0910.google.com (ti-out-0910.google.com [209.85.142.191]) by mx1.freebsd.org (Postfix) with ESMTP id E6C818FC15 for ; Tue, 8 Apr 2008 17:41:30 +0000 (UTC) (envelope-from biancalana@gmail.com) Received: by ti-out-0910.google.com with SMTP id j2so849572tid.3 for ; Tue, 08 Apr 2008 10:41:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=1a+NERT5L3QlmUma+gdbE2uOswSBjrdVxXRFtgeR/gg=; b=exIIKmIZimy/wr1nOMnyvTAlSFc+a/cMzfEg7xUn+F4wVJuqJmP4JeYyc+TAthciYvNX0KCaRwQocEtmSLfjA/yoVhG+q9GsEjLGuZH1bsRB5OjjvrU4Ll5bLiDX3pCOJZ5vEgU/s9Uf56pjopfT03z30SpFud7LaCHtlzzOV/0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=s1xFI8RnJpcudUBDRKllGrGgMRbr2pRzMkfjWTvdI3f6uopsEbSFLWZPJVQmGBSoB/W4LGpAiRcfjwkVXlQGvFiz2AkuSQRGhmKZW7l38w8eKnKsO0BD8iioCQVanF9hncBZCy0VWCgU96hfaVApOrQYjIvKGG3oJ1BPT3c2aAI= Received: by 10.150.198.14 with SMTP id v14mr3925368ybf.134.1207676487920; Tue, 08 Apr 2008 10:41:27 -0700 (PDT) Received: by 10.64.184.9 with HTTP; Tue, 8 Apr 2008 10:41:27 -0700 (PDT) Message-ID: <8e10486b0804081041h28e1f006x34e20c1cbf19849@mail.gmail.com> Date: Tue, 8 Apr 2008 14:41:27 -0300 From: "Alexandre Biancalana" To: "Wojciech Puchar" In-Reply-To: <20080408193543.O26143@wojtek.tensor.gdynia.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <2b5f066d0804080539y7884709es46c8fd9cc2342aec@mail.gmail.com> <8e10486b0804080828n1fe401efl79e86108b3ce9fcd@mail.gmail.com> <20080408181945.U24388@wojtek.tensor.gdynia.pl> <200804081155.42741.josh@tcbug.org> <20080408193543.O26143@wojtek.tensor.gdynia.pl> Cc: Josh Paetzel , freebsd-questions@freebsd.org, Brian McCann Subject: Re: Large file system creation X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Apr 2008 17:41:31 -0000 On 4/8/08, Wojciech Puchar wrote: > > > > > it will be most likely large 32K blocks, so quick fsck and little RAM > > > > > > > > > > In my experience with UFS2 and fsck you will want to have a gig of ram per > TB > > of filesystem. You can get by with less sometimes, eventually you'll get > > bit. Most mere mortals don't take UFS2 past 6-8TB in production. > > > > There are of course exceptions.... > > > > you talk about VM, not real memory. i don't think making 10GB swap is a > problem. The problem is the time that it will take to fsck a 9TB filesystem.....