From owner-freebsd-questions@FreeBSD.ORG Sat Oct 17 02:39:23 2009 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 947A61065670 for ; Sat, 17 Oct 2009 02:39:23 +0000 (UTC) (envelope-from rwmaillists@googlemail.com) Received: from ey-out-2122.google.com (ey-out-2122.google.com [74.125.78.24]) by mx1.freebsd.org (Postfix) with ESMTP id 25BAC8FC08 for ; Sat, 17 Oct 2009 02:39:22 +0000 (UTC) Received: by ey-out-2122.google.com with SMTP id 9so589105eyd.9 for ; Fri, 16 Oct 2009 19:39:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:received:received:date:from:to:subject :message-id:in-reply-to:references:x-mailer:mime-version :content-type:content-transfer-encoding; bh=LOrbc+0dAkSyggOBxrxJwCvdDF2hs4e0EBbruneqVbQ=; b=jdsgnvUR1Y5UxP54d8/yRs7KMJDn/qtrJiCL/hDQpiezlPD4AiE5raqyH8pTbRBE03 zqCyqEiynQBmDTftCXEUP4FbaALYB9blDRhgAoXVxpe7nbad2pkIBaklamZzUg/XfWKM 6V8/wNqtrtPHEW/jYgqU1Np7RU1dlBqCpufKs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=date:from:to:subject:message-id:in-reply-to:references:x-mailer :mime-version:content-type:content-transfer-encoding; b=MEX0CRqo15B8Mjc8e5DAuiQil0vP8+FHdZ9mf42I7jVNc3YRZN7uszH8P8PrmE/gTK 8c8YQO/YIXkRsMAyx+5J7LVlKi+XwLMXe6LE4CWxIWC4R95ABsrzXdw0fdLWebF8s2qB aZ2KSUt7+n6JTXO1HuRc+Wc/vVYf++skso2F8= Received: by 10.216.91.81 with SMTP id g59mr860259wef.128.1255747161846; Fri, 16 Oct 2009 19:39:21 -0700 (PDT) Received: from gumby.homeunix.com (bb-87-81-140-128.ukonline.co.uk [87.81.140.128]) by mx.google.com with ESMTPS id p10sm4009422gvf.14.2009.10.16.19.39.19 (version=SSLv3 cipher=RC4-MD5); Fri, 16 Oct 2009 19:39:20 -0700 (PDT) Date: Sat, 17 Oct 2009 03:39:17 +0100 From: RW To: freebsd-questions@freebsd.org Message-ID: <20091017033917.6d7f04ee@gumby.homeunix.com> In-Reply-To: <20091015003803.f015b721.freebsd@edvax.de> References: <20091015003803.f015b721.freebsd@edvax.de> X-Mailer: Claws Mail 3.7.2 (GTK+ 2.16.6; i386-portbld-freebsd7.2) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: Unknown devices 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: Sat, 17 Oct 2009 02:39:23 -0000 On Thu, 15 Oct 2009 00:38:03 +0200 Polytropon wrote: > On Wed, 14 Oct 2009 23:04:51 +0400, Arkady Tokaev > wrote: > > > > While I was trying to update ports I have received message > > about absence disk space.It's impossible, I thought.But df > > command said: > > > $ df -h > > Filesystem Size Used Avail Capacity Mounted on > > /dev/ad0s1a 23G 3.5G 18G 16% / > > devfs 1.0K 1.0K 0B 100% /dev > > /dev/md0 9.4M 2.8M 6.5M 30% /etc > > /dev/md1 31M 16M 13M 55% /usr/local/etc > > /dev/md2 19M 18K 19M 0% /root > > /dev/md3 31M 6.1M 24M 20% /var > > $ > > What is the md devices?How I can remove them? > > See "man md": The md devices refer to memory disks, RAM that > "emulates" a hard disk. > > Sadly, I don't recognize a reason why your /etc, /usr/local/etc, > /root and /var subtrees are mounted onto memory disks... seems > that you're not running a default install, do you? I would imagine that they're vnode md devices that each have a file on the root filesystem as a backing store. I've never tried it myself but you could do this as an alternative to conventional partitioning. It's a little less efficient, but they can be resized. I'm not aware that sysinstall can install like this though - perhaps it's pc-bsd or something. There should lines like mdconfig_md0="..." defining the devices in rc.conf