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Date: Tue, 22 Jul 2014 22:56:19 +0400
From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Marcel Moolenaar <marcel@FreeBSD.org>
Subject: Re: svn commit: r268986 - head/sys/geom/uzip
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On Tue, Jul 22, 2014 at 05:30:06PM +0000, Marcel Moolenaar wrote:

> Author: marcel
> Date: Tue Jul 22 17:30:05 2014
> New Revision: 268986
> URL: http://svnweb.freebsd.org/changeset/base/268986
> 
> Log:
>   In r264504, we prevented doing I/O for more than MAXPHYS by making
>   the assumption that consumers would respect bio_completed and/or
>   bio_resid to detect short reads. This assumption proved false and
>   file corruption was the result.
>   Create as many bios as we need to satisfy the original request.
>   Check the cached chunk every time we need to do I/O to increase the
>   hit rate.

Can you check other cases I/O for more than MAXPHYS?
I think caused by incorrect partition scheme.