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Date:      Sat, 27 Aug 2011 15:00:14 +0800
From:      Adrian Chadd <adrian@freebsd.org>
To:        Kevin Oberman <kob6558@gmail.com>
Cc:        "freebsd-stable@freebsd.org Stable" <freebsd-stable@freebsd.org>
Subject:   Re: Unable to shutdown
Message-ID:  <CAJ-VmokMsYGf92k2OyUUTSTuOvaTZ3RFk_fayynxFeW4ef6ERg@mail.gmail.com>
In-Reply-To: <CAN6yY1s3x1ojxh-Dx9Ht=L8M4frohLXcMLNgz%2BzgtBCDodBdsg@mail.gmail.com>
References:  <CAN6yY1s3x1ojxh-Dx9Ht=L8M4frohLXcMLNgz%2BzgtBCDodBdsg@mail.gmail.com>

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This sounds like a "create PR and make noise until it's fixed" issue. :-)

green drives are only going to get more prevalent..


Adrian

On 27 August 2011 12:51, Kevin Oberman <kob6558@gmail.com> wrote:
> I've run into an odd problem with dismounting file systems on a
> Seagate Expansion portable
> USB drive. Running 8-stable on an amd64 system and with two FAT32
> (msdosfs) file systems
> on the drive.
>
> The drive is "green" and spins down when idle. =A0If an attempt is made
> to shutdown the
> system while the drive is spun down, the system goes through the usual
> shutdown including
> flushing all buffer out to disk, but when the final disk access to
> mark the file systems as
> clean, the drive never spins up and the system hangs until it is
> powered down. I've found no
> way to avoid this other then to remember to access the disk and cause
> it to spin up before
> shutting down.
>
> If I attempt to unmount the file systems when the drive is shut down.
> the same thing
> happens, but I can recover as the second file system is still mounted
> and an ls(1) to that file
> system will cause the disk to spin up and everything is fine.
>
> This looks like a bug, but I don't see why the unmounting of an
> msdosfs system does not
> spin up the drive. It's clearly hanging on some operation that is not
> spinning up the drive,
> but does block.
>
> Any ideas what is going on? Possible fix?
> --
> R. Kevin Oberman, Network Engineer - Retired
> E-mail: kob6558@gmail.com
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