linux-kernel - Re: tracking down disk spinups.

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Date:	Mon, 14 May 2007 12:24:57 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: tracking down disk spinups.

Dave Jones wrote:
> (14:49:52:root@...ewall:~)# mount
> /dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw)
> (14:49:56:root@...ewall:~)# mount /dev/mapper/VolGroup00-LogVol00 / -t ext2 -o remount,rw
> (14:50:37:root@...ewall:~)# mount
> /dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw)
>
> Why did the kernel ignore what I told it to do ?
> I'm sure it thinks it knows better than me for a reason, but
> I'd like to know what it is.
>   

I don't think you can change filesystem types with remount.  Doesn't
that just change flags on an existing mount?

    J

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