From owner-freebsd-stable@freebsd.org Thu Dec 13 13:18:28 2018 Return-Path: Delivered-To: freebsd-stable@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 8D2391324099 for ; Thu, 13 Dec 2018 13:18:28 +0000 (UTC) (envelope-from Mark.Martinec+freebsd@ijs.si) Received: from mail.ijs.si (mail.ijs.si [IPv6:2001:1470:ff80::25]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id ED87587758 for ; Thu, 13 Dec 2018 13:18:27 +0000 (UTC) (envelope-from Mark.Martinec+freebsd@ijs.si) Received: from amavis-ori.ijs.si (localhost [IPv6:::1]) by mail.ijs.si (Postfix) with ESMTP id 43FvPs3hwyzVSq for ; Thu, 13 Dec 2018 14:18:25 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ijs.si; h= user-agent:message-id:organization:subject:subject:from:from :date:date:content-transfer-encoding:content-type:content-type :mime-version:received:received:received:received; s=jakla4; t= 1544707101; x=1547299102; bh=9KA5c+ne6Ve1dgh5SvGieDqgbFmQCBYQk3c 5eY31wMw=; b=UY9WGZvLejAbj8SGoNKy7IRcDSozDyKMYmPCdsgSsyEIp0FqWNc N3poBESkmaQqglDrB1Sx+lsPDgTV8MpZfdDYTwCOAmNm3Hk+CBNBKY+jN4bhwyZB 0OonW000eVe/m6YwMaOUrd/m3S4hdUa/R/bdAVmAq/XKBQCnu/EIReTU= X-Virus-Scanned: amavisd-new at ijs.si Received: from mail.ijs.si ([IPv6:::1]) by amavis-ori.ijs.si (mail.ijs.si [IPv6:::1]) (amavisd-new, port 10026) with LMTP id Z-wT4G-BubXu for ; Thu, 13 Dec 2018 14:18:21 +0100 (CET) Received: from mildred.ijs.si (mailbox.ijs.si [IPv6:2001:1470:ff80::143:1]) by mail.ijs.si (Postfix) with ESMTP id 43FvPn6RLXzVSl for ; Thu, 13 Dec 2018 14:18:21 +0100 (CET) Received: from nabiralnik.ijs.si (nabiralnik.ijs.si [IPv6:2001:1470:ff80::80:16]) by mildred.ijs.si (Postfix) with ESMTP id 43FvPn4Z9LzfS for ; Thu, 13 Dec 2018 14:18:21 +0100 (CET) Received: from neli.ijs.si (2001:1470:ff80:88:21c:c0ff:feb1:8c91) by nabiralnik.ijs.si with HTTP (HTTP/1.1 POST); Thu, 13 Dec 2018 14:18:21 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Thu, 13 Dec 2018 14:18:21 +0100 From: Mark Martinec To: freebsd-stable@freebsd.org Subject: zfsboot@12.0: Shortening read at xxxx from 16 to -479991569 Organization: Jozef Stefan Institute Message-ID: X-Sender: Mark.Martinec+freebsd@ijs.si User-Agent: Roundcube Webmail/1.3.1 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Dec 2018 13:18:28 -0000 On one of my hosts (now running 12.0-RELEASE) the zfsboot shows this weird negative number, which sounds suspicious: Verifying DMI pool Data ............. Shortening read at 3907029152 from 16 to 15 Shortening read at 7435283708 from 16 to -479991569 BTX loader 1.0 BTX version is 1.02 Consoles: ... BIOS drive C: is disk0 ... The machine boots up normally and is fine, zpool scrub is happy, so, should I worry? Anything fishy there? Searching through sources, the message seems to come from stand/i386/zfsboot/zfsboot.c : printf("Shortening read at %lld from %d to %lld\n", alignlba, alignnb, (zdsk->dsk.size + zdsk->dsk.start) - alignlba); Mark