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Date:      Thu, 07 Aug 2008 17:05:39 +0900
From:      Hiroharu Tamaru <tamaru@myn.rcast.u-tokyo.ac.jp>
To:        "Andrey V. Elsukov" <bu7cher@yandex.ru>
Cc:        freebsd-fs@freebsd.org, Jeremy Chadwick <koitsu@FreeBSD.org>
Subject:   Re: zpool degraded - 'UNAVAIL cannot open' functioning drive
Message-ID:  <sa6ej51z1v0.wl%tamaru@myn.rcast.u-tokyo.ac.jp>
In-Reply-To: <489A9739.20707@yandex.ru>
References:  <6c3c36d00808062109y6ae176a0ha055129392b00542@mail.gmail.com> <20080807044759.GA7505@eos.sc1.parodius.com> <6c3c36d00808062212y4e9a1464i48e146e84725a36e@mail.gmail.com> <6c3c36d00808062235v5cbb4470v990b76d569f85614@mail.gmail.com> <20080807055841.GB9735@eos.sc1.parodius.com> <489A9739.20707@yandex.ru>

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Hi,

At Thu, 07 Aug 2008 10:33:29 +0400, Andrey V. Elsukov wrote:
> Jeremy Chadwick wrote:
> > Correct, it's a FreeBSD ATA subsystem/driver problem.
> 
> I tried 8.0-CURRENT on marvell's, nvida's and intel's controllers.
> Hot plug and attach/detach works on any of these controllers without
> any problems.. What i should to do to get similar problems? :)

Since the topic is here:
Can you boot up the machine with that ata HDD offline
(unplugged), and then insert it and atthach it?

On my 6.2-STABLE machine, I can detach-replace-attach ata
disks (most of the time), but only if I have that slot
active at boot time.

And yes, though I haven't come up with an absolute sequence
to reproduce it, I occasionary have the same problem that
hot replaced disks are not recognized by 'atacontrol
attach', be it the same physical disk or another.
I feel there is a 'right sequence' of atacontrol commands
(or the lack of), and some 'wrong sequences'.
The only way to reattach it then is to reboot the machine.

Thanks
-- 
Hiroharu Tamaru



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