From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Craven Subject: Re: Build machine sysadmin support Date: Sat, 27 Aug 2016 12:31:18 +0200 Message-ID: References: <87bn0pp58b.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:34930) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bdatd-0000G1-UG for guix-devel@gnu.org; Sat, 27 Aug 2016 06:31:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bdatW-00067O-SV for guix-devel@gnu.org; Sat, 27 Aug 2016 06:31:28 -0400 Received: from mail-yw0-x229.google.com ([2607:f8b0:4002:c05::229]:33063) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bdatV-00066z-M6 for guix-devel@gnu.org; Sat, 27 Aug 2016 06:31:22 -0400 Received: by mail-yw0-x229.google.com with SMTP id r9so62204651ywg.0 for ; Sat, 27 Aug 2016 03:31:19 -0700 (PDT) In-Reply-To: List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: "Guix-devel" To: guix-devel , =?UTF-8?Q?Ludovic_Court=C3=A8s?= On Sun, Aug 21, 2016 at 7:38 PM, David Craven wrote: > So guix doesn't work inside a vm - because /gnu/store is mounted > readonly. To be able to offload arm builds once guix system vm > --system=armhf-linux works, /gnu/store needs to be writeable. > > Can multiple daemons concurrently use the same store? > > or alternatively, can we move the > > (unless (zero? (system* unionfs "-o" > > "cow,allow_other,use_ino,suid,dev,max_files=65536" > "/rw-root=RW:/real-root=RO" > "/root")) > (error "unionfs failed")) > > to after the 9p filesystems have been mounted, so that the unionfs > allows writing to /gnu/store too? I'd appreciate some ideas on how to best tackle this problem (offloading builds to a guix system vm instance) =)