How to correct udev rules that generate errors with udev 100

How to correct udev rules that generate errors with udev 100

[Miles Lane]

I am running Ubuntu's development repository.  It currently has udev 079,
but I upgraded to udev 100 recently.  udev 079 doesn't work correctly with
AKPM's latest kernel tree, which I test.  After upgrading to udev 100, I get
the following:

Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid KERNEL operation
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid rule
'/etc/udev/rules.d/40-permissions.rules:40'

From the file:
[...]
SUBSYSTEM="usb", KERNEL="lp[0-9]*",    GROUP="lp"
KERNEL="pt[0-9]*",                     GROUP="tape"
KERNEL="pht[0-9]*",                    GROUP="tape"
[...]
KERNEL="nvram",                        GROUP="nvram"

Sep 13 15:18:30 localhost udevd[5973]: lookup_group: specified group
unknown 'nvram'

Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: unknown key
'MODALIAS' in /etc/udev/rules.d/60-pcmcia.rules:4
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: unknown key
'MODALIAS' in /etc/udev/rules.d/60-pcmcia.rules:10
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: unknown key
'MODALIAS' in /etc/udev/rules.d/60-pcmcia.rules:14

For example:
ACTION="add", SUBSYSTEM="pcmcia", MODALIAS="?*", \
                RUN+="/sbin/modprobe $modalias"

Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid ACTION operation
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid rule
'/etc/udev/rules.d/85-hal.rules:5'

SUBSYSTEM="block",ACTION="remove", RUN+="/usr/lib/hal/hal-unmount.sh"

Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: unknown key
'MODALIAS' in /etc/udev/rules.d/85-pcmcia.rules:8
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: unknown key
'MODALIAS' in /etc/udev/rules.d/85-pcmcia.rules:12

Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid KERNEL operation
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid rule
'/etc/udev/rules.d/z60_usbmount.rules:3'
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid KERNEL operation
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid rule
'/etc/udev/rules.d/z60_usbmount.rules:4'
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid KERNEL operation
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid rule
'/etc/udev/rules.d/z60_usbmount.rules:5'
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid KERNEL operation
Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid rule
'/etc/udev/rules.d/z60_usbmount.rules:6'

KERNEL="sd*", BUS="usb", ACTION="add",
RUN+="/usr/share/usbmount/usbmount add"
KERNEL="ub*", BUS="usb", ACTION="add",
RUN+="/usr/share/usbmount/usbmount add"
KERNEL="sd*",             ACTION="remove",
RUN+="/usr/share/usbmount/usbmount remove"
KERNEL="ub*",             ACTION="remove",
RUN+="/usr/share/usbmount/usbmount remove"

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Re: How to correct udev rules that generate errors with udev 100

[Kay Sievers]

On Wed, 2006-09-13 at 16:28 -0700, Miles Lane wrote:
> I am running Ubuntu's development repository.  It currently has udev 079,
> but I upgraded to udev 100 recently.  udev 079 doesn't work correctly with
> AKPM's latest kernel tree, which I test.  After upgrading to udev 100, I get
> the following:
> 
> Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid KERNEL operation
> Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid rule
> '/etc/udev/rules.d/40-permissions.rules:40'
> 
> >From the file:
> [...]
> SUBSYSTEM="usb", KERNEL="lp[0-9]*",    GROUP="lp"

KERNEL= instead of KERNEL= should do it.

Kay


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Re: How to correct udev rules that generate errors with udev 100

[Miles Lane]

On 9/13/06, Kay Sievers <kay.sievers@vrfy.org> wrote:
> On Wed, 2006-09-13 at 16:28 -0700, Miles Lane wrote:
> > I am running Ubuntu's development repository.  It currently has udev 079,
> > but I upgraded to udev 100 recently.  udev 079 doesn't work correctly with
> > AKPM's latest kernel tree, which I test.  After upgrading to udev 100, I get
> > the following:
> >
> > Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid KERNEL operation
> > Sep 13 15:18:30 localhost udevd[5973]: add_to_rules: invalid rule
> > '/etc/udev/rules.d/40-permissions.rules:40'
> >
> > >From the file:
> > [...]
> > SUBSYSTEM="usb", KERNEL="lp[0-9]*",    GROUP="lp"
>
> KERNEL= instead of KERNEL= should do it.

Thanks!  After fixing the faulty KERNEL operators, I get these:

Sep 13 17:00:50 localhost kernel: [udevd:3971]: Changing netdevice
name from [eth0] to [eth1]
Sep 13 17:00:50 localhost kernel: [udevd:3971]: Changing netdevice
name from [eth0] to [eth0_rename]
Sep 13 17:00:50 localhost kernel: [udevd:3971]: Changing netdevice
name from [eth0_rename] to [eth1]
Sep 13 17:00:50 localhost kernel: [udevd:3976]: Changing netdevice
name from [eth1] to [eth0]
Sep 13 17:00:50 localhost kernel: [udevd:3971]: Changing netdevice
name from [eth0_rename] to [eth1]

Any idea why udev would be changing the netdevice names?

        Miles

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Re: How to correct udev rules that generate errors with udev 100

[Bryan Kadzban]

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Miles Lane wrote:
> Any idea why udev would be changing the netdevice names?

Because you have a rule that names the NIC by either MAC address or
physical (bus) location, would be my guess.  ;-)  It looks like udevd
is trying to swap names, so your kernel probably detected the devices
in the opposite order from what your rules say they should be named.

(You may not even know about this rule; it may have been generated by
another rule-generating rule that Ubuntu put in place.)

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Re: How to correct udev rules that generate errors with udev 100

[Miles Lane]

On 9/13/06, Bryan Kadzban <bryan@kadzban.is-a-geek.net> wrote:
> Miles Lane wrote:
> > Any idea why udev would be changing the netdevice names?
>
> Because you have a rule that names the NIC by either MAC address or
> physical (bus) location, would be my guess.  ;-)  It looks like udevd
> is trying to swap names, so your kernel probably detected the devices
> in the opposite order from what your rules say they should be named.
>
> (You may not even know about this rule; it may have been generated by
> another rule-generating rule that Ubuntu put in place.)

Ah, I am testing Andrew Morton's 2.6.18-rc6-mm2 tree.  One of the
patches in this tree makes device detection run mutlithreaded.
One of the outcomes is that detection order can differ from the
one in serialized detection.   Perhaps this is the reason for these
messages.

Thanks,
            Miles

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Re: How to correct udev rules that generate errors with udev 100

[Bryan Kadzban]

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Miles Lane wrote:
> One of the outcomes is that detection order can differ from the one
> in serialized detection.   Perhaps this is the reason for these
> messages.

Well, that (and the fact that the kernel never guaranteed the order of
device discovery in the first place) is the reason that Ubuntu created
the rule that creates the rules that are causing the messages.  So
indirectly, yes, what you said is true -- but don't expect changing
kernels to kill the messages.  The rules would still exist.

To find out where they're coming from, try grepping your rules files for
some pattern similar to:

NAME=.eth

as that should match the NAME="eth0" part of these rules.  I wouldn't
remove the rules, though, since they're the only thing giving you stable
device names...

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Re: How to correct udev rules that generate errors with udev 100

[Scott James Remnant]

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On Wed, 2006-09-13 at 20:41 -0400, Bryan Kadzban wrote:

> Miles Lane wrote:
> > Any idea why udev would be changing the netdevice names?
> 
> Because you have a rule that names the NIC by either MAC address or
> physical (bus) location, would be my guess.  ;-)  It looks like udevd
> is trying to swap names, so your kernel probably detected the devices
> in the opposite order from what your rules say they should be named.
> 
> (You may not even know about this rule; it may have been generated by
> another rule-generating rule that Ubuntu put in place.)
> 
In Ubuntu, the rule parses the /etc/iftab file for this information --
so check that file.

You'll almost certainly find that it's doing the right thing for you.

Scott
-- 
Scott James Remnant
scott@ubuntu.com

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