Technical udev question for Greg

Technical udev question for Greg

[walt]

Hi Greg,

I think I acidentally screwed up by running a script which ran MAKEDEV
while udev was running.

Now /dev/.udev.tdb is very large and devices have strange permissions
they didn't have before.

All I want to do is delete all the extraneous devices in .udev.tdb
and start over.  How do I do that?

Thanks!

Re: Technical udev question for Greg

[Greg KH]

On Sat, Jan 03, 2004 at 12:47:08PM -0800, walt wrote:
> Hi Greg,
> 
> I think I acidentally screwed up by running a script which ran MAKEDEV
> while udev was running.
> 
> Now /dev/.udev.tdb is very large and devices have strange permissions
> they didn't have before.

As udev didn't get called when runinng MAKEDEV, I don't see how the udev
database could have grown.

> All I want to do is delete all the extraneous devices in .udev.tdb
> and start over.  How do I do that?

	rm -rf /dev/*
	rm -f /dev/.udev.tdb
	/etc/init.d/udev start

That should do it.

greg k-h

Re: Technical udev question for Greg

[walt]

Greg KH wrote:
> On Sat, Jan 03, 2004 at 12:47:08PM -0800, walt wrote:

>>I acidentally ran a script which ran MAKEDEV
>>while udev was running.
>>
>>Now /dev/.udev.tdb is very large and devices have strange permissions
>>they didn't have before.


> As udev didn't get called when runinng MAKEDEV, I don't see how the udev
> database could have grown.

Well, after doing the steps below the size of the db didn't seem any
smaller, true enough.


>>All I want to do is delete all the extraneous devices in .udev.tdb
>>and start over.  How do I do that?


> 	rm -rf /dev/*
> 	rm -f /dev/.udev.tdb
> 	/etc/init.d/udev start

However, after doing the above and recreating a few missing devices
the behavior of the machine seems back to normal, so clearly I did
something that mattered.  I don't pretend to understand how or why,
but thanks.

Re: Technical udev question for Greg

[Martin Schlemmer]

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On Sun, 2004-01-04 at 02:24, walt wrote:

> 
> > 	rm -rf /dev/*
> > 	rm -f /dev/.udev.tdb
> > 	/etc/init.d/udev start
> 
> However, after doing the above and recreating a few missing devices
> the behavior of the machine seems back to normal, so clearly I did
> something that mattered.  I don't pretend to understand how or why,
> but thanks.

Forgot to say in other mail to you - I had weird issues with nodes
that was not yet sysfs'ified in the past due to strange permissions
(this is now aside those on ptmx).   Try rc1-mm1 for misc/vc sysfs
support (might be a fluke, but I have not yet had strange going on's
since Greg posted them, so maybe it might be /dev/null, etc that
caused issues for me, that did it for you as well), or if you roll
your own kernels, I will be glad to post you the patches off list if
you cannot find them here.


-- 
Martin Schlemmer

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