Re: updating mtime for char/block devices?

[Carl-Daniel Hailfinger]

Arjan van de Ven schrieb:
> On Mon, 2005-02-28 at 00:51 +0100, Carl-Daniel Hailfinger wrote:
> 
>>Hi,
>>
>>is it intentional that
>>echo foo >/dev/hda1
>>doesn't update the mtime of the device node, but
>>echo foo >/dev/tty10
>>does update the mtime of the device node?
>>
>>And no, mounting with the noatime flag doesn't help because the
>>mtime is updated. IIRC some time ago this behaviour was different,
>>but I could easily be mistaken.
> 
> 
> devices are tricky in general in this respect, /dev may be mounted read
> only for example ;)

Sorry for not specifying my real problem which is preventing disk access
when my laptop is running on battery.

Can I prevent mtime updates for all device files? Mounting /dev readonly
would certainly help, but for that to work I'd have to move /dev to a
different filesystem, right?


Regards,
Carl-Daniel
-- 
http://www.hailfinger.org/
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