From owner-freebsd-fs@freebsd.org  Sat Oct  1 22:02:33 2016
Return-Path: <owner-freebsd-fs@freebsd.org>
Delivered-To: freebsd-fs@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3E10EA94C90
 for <freebsd-fs@mailman.ysv.freebsd.org>; Sat,  1 Oct 2016 22:02:33 +0000 (UTC)
 (envelope-from citrin@citrin.ru)
Received: from hz.citrin.ru (hz.citrin.ru [88.198.212.3])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id F3CCBC73
 for <freebsd-fs@freebsd.org>; Sat,  1 Oct 2016 22:02:32 +0000 (UTC)
 (envelope-from citrin@citrin.ru)
Received: from [192.168.0.157] (c-24-60-168-172.hsd1.ct.comcast.net
 [24.60.168.172])
 by hz.citrin.ru (Postfix) with ESMTPSA id 690CF287D54;
 Sat,  1 Oct 2016 22:02:29 +0000 (UTC)
Subject: Re: UFS: unaligned read from GELI with 8k sectorsize
To: Konstantin Belousov <kostikbel@gmail.com>
References: <f84b069b-aeee-ff3c-d4f9-e2fe3caaddb1@citrin.ru>
 <20161001114536.GX38409@kib.kiev.ua> <20161001115439.GY38409@kib.kiev.ua>
 <68a8ed6d-e302-799c-3d2c-1d85c48d07bf@citrin.ru>
 <20161001211025.GD38409@kib.kiev.ua>
Cc: "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org>
From: Anton Yuzhaninov <citrin@citrin.ru>
Message-ID: <999638f9-3fee-82e3-d67f-cffef53b74e8@citrin.ru>
Date: Sat, 1 Oct 2016 18:02:14 -0400
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101
 Thunderbird/45.3.0
MIME-Version: 1.0
In-Reply-To: <20161001211025.GD38409@kib.kiev.ua>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=citrin.ru; s=s0;
 t=1475359349; bh=RcVLYBTyQeVJHoYvg1bKKlnGKEZJ28Qc2KrB5/+taZ8=;
 h=Subject:To:References:Cc:From:Message-ID:Date:MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding;
 b=6LbSUvgob6G0Lv/CUhDhHMLDbdOj137H52TQbDZZnpHrnriQhkgEx26YwNGIdWUYcMClJEbohI+dgqOpKCg1ryUgevB0WMxnv28WUNUB/PWDL69W5H2MByOgFAiet2FYniSaJMtmSQFJCm4iRaWvS56+qrjlyQTKBfVIyvQH1rs=
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-fs>,
 <mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs/>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
 <mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 01 Oct 2016 22:02:33 -0000

On 2016-10-01 17:10, Konstantin Belousov wrote:
> What happens if you boot, mount your USB drive with 8k sectors, and try
> to execute some binary from it ?  E.g., try to execute the init.  I do
> not care about app errors (most likely it should complain about uid != 0
> or pid != 1), but rather want to know whether the image is activated or not.

I booted from a USB stick with patched kernel and attached geli with 8k 
sector.
It seems to be the image is not activated:

root@:~ # /mnt/ssdroot/sbin/ping
load: 0.16  cmd: csh 714 [pgrbwt] 11.46r 0.00u 0.00s 0% 3720k

root@:~ # procstat -k 714
   PID    TID COMM             TDNAME           KSTACK
procstat: sysctl: kern.proc.kstack: 714: Device busy

DDB backtrace for shell:
https://imgur.com/a/JDLry