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Date:      Tue, 5 Nov 2013 13:09:04 +0400
From:      Gleb Smirnoff <glebius@FreeBSD.org>
To:        Boris Bobrov <breton@cynicmansion.ru>
Cc:        Konstantin Belousov <kostikbel@gmail.com>, Glen Barber <gjb@freebsd.org>, "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>, Maciej Milewski <milu@dat.pl>
Subject:   Re: 10.0-BETA1 i386 on VirtualBox
Message-ID:  <20131105090904.GN1467@glebius.int.ru>
In-Reply-To: <201311051215.40336.breton@cynicmansion.ru>
References:  <526939BF.4030306@dat.pl> <20131105070222.GW59496@kib.kiev.ua> <20131105070608.GI1467@glebius.int.ru> <201311051215.40336.breton@cynicmansion.ru>

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On Tue, Nov 05, 2013 at 12:15:35PM +0400, Boris Bobrov wrote:
B> В сообщении от Tuesday 05 of November 2013 11:06:09 Gleb написал:
B> > On Tue, Nov 05, 2013 at 09:02:22AM +0200, Konstantin Belousov wrote:
B> > K> First, all reported instances have ata attachment for the ada0,
B> > except K> of milu (possibly). So this means that kernel does transient
B> > remapping, K> and very different code path is executed comparing with
B> > what I thought K> initially. The path is simpler than the pure
B> > unmapped i/o.
B> > K>
B> > K> Second, I use QEMU with the ata0 attachment for the disks regularly,
B> > and K> I do not have an issue.  I also did not see a report from the
B> > real h/w. K>
B> > K> Third point is that all reports are i386.  Is there anybody with
B> > amd64, K> vbox, ata and the same corruption hiddent by disabling
B> > unmapped i/o ? K>
B> > K> In what way the non-working images were installed ?  Is it possible
B> > to K> produce the problematic installs by doing it one way, and
B> > non-problematic K> by another ?
B> > 
B> > The only known way to get FreeBSD working is to turn off unmapped io
B> > in loader. Any tweaking of "hardware" in VB or changes in the install
B> > process do not affect.
B> 
B> Disabling VT-x in VB helps too.

Doesn't help with my issue. This could mean that my issue and the one
that Boris and Maciej encountered are different.

-- 
Totus tuus, Glebius.



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