From owner-freebsd-hackers@freebsd.org Sat Jul 21 17:16:08 2018 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id EC44110510B9 for ; Sat, 21 Jul 2018 17:16:07 +0000 (UTC) (envelope-from Alexander@leidinger.net) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 85F1D70A72 for ; Sat, 21 Jul 2018 17:16:07 +0000 (UTC) (envelope-from Alexander@leidinger.net) Received: by mailman.ysv.freebsd.org (Postfix) id 44CAA10510B0; Sat, 21 Jul 2018 17:16:07 +0000 (UTC) Delivered-To: hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1D99E10510AE for ; Sat, 21 Jul 2018 17:16:07 +0000 (UTC) (envelope-from Alexander@leidinger.net) Received: from mailgate.Leidinger.net (bastille.leidinger.net [89.238.82.207]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A82BF70A6D; Sat, 21 Jul 2018 17:16:06 +0000 (UTC) (envelope-from Alexander@leidinger.net) Date: Sat, 21 Jul 2018 19:15:53 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=leidinger.net; s=outgoing-alex; t=1532193365; bh=0fOWk5laP1+p7fUEhKvLGxrEMgsRADb0ZmRnlFi/i5k=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=ctJC9n1sN5FK6iioL8A6ki16osEKzoPHv7mNIndYfRYl8GkkV0LnvVddKEhMLBA3J 0Jjjp+n7HEodtep18WyFPgTUsnOz7XARw8XjpNECANQsf421kBiqNUwUbEXdz9X7uf lIO3gP+xPSCWylyaene7iBeflqy1Zt7vzP9oe2GvL5YZEvaOWv0fKO/pHvngxf9/Ne 4B06qa9P81a2atWStg80+rbhkDyDiK5hqAur2oYWmiAkNhoSKVBuPfQ2ps1UPri4f8 6blTKNJQRCzyBWxj8u2zY2NvnzH/h1sPKer3XelcYsC7WhxSfSxZzYNzQ7T1lWkhrv l7nnC3dqFRrjQ== Message-ID: <20180721191553.Horde.rdWCQWOsM1XETkWQIJ4mWUc@webmail.leidinger.net> From: Alexander Leidinger To: Mark Johnston , John Baldwin Cc: hackers@freebsd.org Subject: Re: crashinfo doesn't support compressed crashdumps - which way forward? References: <20180712141409.Horde.NVSzLsvqE-2PCSDqhhfb0Xd@webmail.leidinger.net> <20180712143118.GA15892@raichu> <6858738d-7eef-cc0f-10bd-900fb822fecd@FreeBSD.org> <20180712183557.GD15892@raichu> In-Reply-To: <20180712183557.GD15892@raichu> User-Agent: Horde Application Framework 5 Content-Type: multipart/signed; boundary="=_cRPOi6cJG8JUTZkp4QLMTYY"; protocol="application/pgp-signature"; micalg=pgp-sha1 MIME-Version: 1.0 X-Mailman-Approved-At: Sat, 21 Jul 2018 17:55:37 +0000 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Jul 2018 17:16:08 -0000 This message is in MIME format and has been PGP signed. --=_cRPOi6cJG8JUTZkp4QLMTYY Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Quoting Mark Johnston (from Thu, 12 Jul 2018=20=20 14:35:57=20-0400): > On Thu, Jul 12, 2018 at 09:09:02AM -0700, John Baldwin wrote: >> Yes, here's the patch for 2 which has been tested. 4) is pretty hard >> to do in practice as you have to basically decompress into RAM when >> reading the core to do anything useful as opposed to a format that >> only compressed certain parts (e.g. if the page tables were not >> compressed only the payload in a minidump, and if it were compressed >> on some kind of block boundaries so that you could locate a given >> block and decompress it when reading specific data). Coming up with >> such a format would be more useful but requires more work. > > That patch looks ok to me, FWIW. As I pointed out, it's easy enough to > just disable crashinfo if one doesn't want the extraction to take place. Hi John, what about committing this patch? If you are too busy, do you mind if I commit it? Bye, Alexander. --=20 http://www.Leidinger.net=20Alexander@Leidinger.net: PGP 0x8F31830F9F2772BF http://www.FreeBSD.org netchild@FreeBSD.org : PGP 0x8F31830F9F2772BF --=_cRPOi6cJG8JUTZkp4QLMTYY Content-Type: application/pgp-signature Content-Description: Digitale PGP-Signatur Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJbU2pJAAoJEKrxQhqFIICEoyoP/3XaWKCQbPTrNhsiapP51ko9 Gm2n43MshkHRBeY7pgCw1BdOyCC0pU3c3wbMtRpcWChHoM4RqpHyGePFmINQ5OPI sNINzKqc8y4srWJEYFynGP4FdWI4+eVU2Zmv6MeWMVwS1vApWGhuNnjYlV2/Wzfh Kj1E9ERbDhhaERuFMUO/gryagmtQkpNegj2lzSv+ApO1QC2rOsHLc4bGa6ueiyXx U46piPgjwzQzCnjp44qJFeX3rqGc95sZjAN8ZzXGqGvLjJAqcSAQKSOTtHsM+zk+ QiTt2bctvBtETO/VsWAYozQ1aURbX2cgyE635o7OPl06ccMRf73tgMw2AS4EeHm7 gZxQDCKmhlUeJd56oAYSwvDpSB34uHikr6brnNBQaoh60ROO3Un+Xvsn8tMg6ZYq fdMHOvg7gQ/gwtWOOKmwwrX0vDYedcet9WOaVm8U1aXKcEII8FH3mUGimmnNYptg h0dPo2EESQCh3uwzsu3s2+SWDraZI3I0mJP2PSkT9FFqMCfMfH37dnzHtv9V12jJ 6p0whFF8W/p1hdC/dRT0a7PSCD6QU4V6IQghxiVvlwmUBy7VIljIM+2Naz2aEXf5 CDX6degfGQ1M8QRx9Q5AFpQu2xVNqiavzF/NMBFBFQctYTTSzcUD1ZuFOjz7FjOt 9GQplckD364x4bcCNKFT =CaK/ -----END PGP SIGNATURE----- --=_cRPOi6cJG8JUTZkp4QLMTYY--