From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id D5BE6E006EE; Fri, 1 Aug 2014 05:58:56 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-HAM-Report: * 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider * (martin.jansa[at]gmail.com) * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low * trust * [209.85.212.176 listed in list.dnswl.org] * -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's * domain * 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily * valid * -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature Received: from mail-wi0-f176.google.com (mail-wi0-f176.google.com [209.85.212.176]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 36D90E005BB for ; Fri, 1 Aug 2014 05:58:55 -0700 (PDT) Received: by mail-wi0-f176.google.com with SMTP id bs8so1329570wib.3 for ; Fri, 01 Aug 2014 05:58:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:date:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; bh=Js5Ig0+Q6F0ecd/kCBqJZ4F6VExkeHUq2h1BibbsxNU=; b=wToYGJz/dM94vchSBOFUtw0PcOxDNBRw1fV4BZRM1MzY1sO3ctLMML8i1HZh9221lf EHjN5PRddqFmC0YQQjD6Fy84BDElSYBz0DgyXunlBtmugLZ6IFYmkQYN6SmMPtq6qPDx VE/Q+YiOVL4Ah6OAooyc/CqqDJojXK7d+kW0l1b5SuiROrbcTRpE/M6SRbcLqAe4l7RN sx2rLkTE7SARobM2S0JZLD98MyuY6J+WLF+vrJ/KRWVWt3Pt9jw9R5DQJKA4YcHL5Jvm L7dadSzWN6GnfDhQCeL8ts+opxjdituJn+w3578FmllHGhR6wqKvFL2d8DnK5SNKSLM3 PPHw== X-Received: by 10.180.10.98 with SMTP id h2mr6644693wib.29.1406897932584; Fri, 01 Aug 2014 05:58:52 -0700 (PDT) Received: from localhost (ip-89-176-104-3.net.upcbroadband.cz. [89.176.104.3]) by mx.google.com with ESMTPSA id ej10sm8516129wib.12.2014.08.01.05.58.51 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 01 Aug 2014 05:58:51 -0700 (PDT) From: Martin Jansa X-Google-Original-From: Martin Jansa Date: Fri, 1 Aug 2014 14:59:16 +0200 To: Bart Jansseune Message-ID: <20140801125916.GD16445@jama> References: MIME-Version: 1.0 In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Cc: "poky@yoctoproject.org" Subject: Re: examine SSTATE_MIRRORS differences X-BeenThere: poky@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Poky build system developer discussion & patch submission for meta-yocto List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Aug 2014 12:58:56 -0000 X-Groupsio-MsgNum: 9727 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="awxGVdTeoOKEHxWQ" Content-Disposition: inline --awxGVdTeoOKEHxWQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Aug 01, 2014 at 01:46:40PM +0200, Bart Jansseune wrote: > Hello, >=20 > I'm trying to setup a SSTATE_MIRROR using a fast build server so that a s= low virtual machine doesn't have to rebuild everything. > Both are Ubuntu 14.04 64 bit machines and use the same poky release (dais= y). > What I notice is that for some components the cache is used eg perl-nativ= e but not for others. > I understand that once there is a delta between both machines, all depend= ent packages also mismatch and need to be rebuilt. >=20 > How do you figure out where things start diverging? >=20 > Are there requirements on the tools of the build to ensure that SSTATE_MI= RROR can be used effectively? E.g. the gcc version on both machines might n= eed to be the same. Run openembedded-core/scripts/sstate-diff-machines.sh on both machines and compare list.M files in generated folders. That will give you pointers to interesting .sigdata files, which you can compare with bitbake-diffsigs - which will reveal more .sigdata files and so on until you find root cause. --=20 Martin 'JaMa' Jansa jabber: Martin.Jansa@gmail.com --awxGVdTeoOKEHxWQ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlPbjyQACgkQN1Ujt2V2gBxJywCgnfnqmFnPcBVb0W+rBRqs3f4Q Me0AoJV6/TMv4pV9mtJhValSxxivkIKC =dDGc -----END PGP SIGNATURE----- --awxGVdTeoOKEHxWQ--