[gentoo-user] kmod requires modules in kernel??

[gentoo-user] kmod requires modules in kernel??

[Tanstaafl]

Ok, I am prepping for the udev update this weekend, getting everything 
updated that doesn't pull in the udev updates.

First thing I did was to eliminate the module-init-tools<>kmod Blocker:

emerge -C module-init-tools %% emerge kmod

and noted the following warnings/errors:

Checking for suitable kernel configuration options...
ERROR: setup
   CONFIG_MODULES:	 is not set when it should be.
   CONFIG_MODULE_UNLOAD:	 is not set when it should be.

This is a server, and I do not WANT loadable modules enabled...

So, how do I get rid of this warning/error? Or is this nothing to be 
concerned about if I do not want/need loadable modules?

Thanks

Re: [gentoo-user] kmod requires modules in kernel??

[Mike Gilbert]

On Wed, Apr 3, 2013 at 8:54 AM, Tanstaafl <tanstaafl@libertytrek.org> wrote:
> Ok, I am prepping for the udev update this weekend, getting everything
> updated that doesn't pull in the udev updates.
>
> First thing I did was to eliminate the module-init-tools<>kmod Blocker:
>
> emerge -C module-init-tools %% emerge kmod
>
> and noted the following warnings/errors:
>
> Checking for suitable kernel configuration options...
> ERROR: setup
>   CONFIG_MODULES:        is not set when it should be.
>   CONFIG_MODULE_UNLOAD:  is not set when it should be.
>
> This is a server, and I do not WANT loadable modules enabled...
>
> So, how do I get rid of this warning/error? Or is this nothing to be
> concerned about if I do not want/need loadable modules?
>
> Thanks
>

The check is nonfatal; feel free to ignore it if you know what you are doing.

Re: [gentoo-user] kmod requires modules in kernel??

[Alan McKinnon]

On 03/04/2013 14:54, Tanstaafl wrote:
> Ok, I am prepping for the udev update this weekend, getting everything
> updated that doesn't pull in the udev updates.
> 
> First thing I did was to eliminate the module-init-tools<>kmod Blocker:
> 
> emerge -C module-init-tools %% emerge kmod
> 
> and noted the following warnings/errors:
> 
> Checking for suitable kernel configuration options...
> ERROR: setup
>   CONFIG_MODULES:     is not set when it should be.
>   CONFIG_MODULE_UNLOAD:     is not set when it should be.
> 
> This is a server, and I do not WANT loadable modules enabled...
> 
> So, how do I get rid of this warning/error? Or is this nothing to be
> concerned about if I do not want/need loadable modules?
> 
> Thanks
> 


The warning makes sense and is correct. kmod is a set of tools to
manipulate kernel modules. It's pointless having it if the kernel does
not use modules. Therefore, the error check exists.

Furthermore,

$ equery depends kmod
 * These packages depend on kmod:
sys-fs/udev-200 (kmod ? >=sys-apps/kmod-12)
virtual/modutils-0 (sys-apps/kmod[tools])


$ equery depends virtual/modutils
 * These packages depend on virtual/modutils:
app-emulation/virtualbox-modules-4.2.10 (kernel_linux ?virtual/modutils)
app-emulation/vmware-modules-271.2 (kernel_linux ? virtual/modutils)
sys-apps/rescan-scsi-bus-1.56 (virtual/modutils)

$ equery depends rescan-scsi-bus
 * These packages depend on rescan-scsi-bus:
sys-apps/sg3_utils-1.35 (>=sys-apps/rescan-scsi-bus-1.24)


$ equery depends sg3_utils
 * These packages depend on sg3_utils:
media-libs/libgpod-0.8.2 (sys-apps/sg3_utils)
sys-apps/rescan-scsi-bus-1.56 (>=sys-apps/sg3_utils-1.24)
sys-fs/udisks-1.0.4-r5 (>=sys-apps/sg3_utils-1.27.20090411)


It's hard to escape those hard masks. Do these steps:

1. File a bug, this behaviour is overly constrictive
2. Copy kmod to your local overlay and delete the kernel modules check
3. USE="-kmod"

-- 
Alan McKinnon
alan.mckinnon@gmail.com

Re: [gentoo-user] kmod requires modules in kernel??

[Dan Johansson]

On Wednesday 03 April 2013 17.10:15 Alan McKinnon wrote:
> On 03/04/2013 14:54, Tanstaafl wrote:
> > Ok, I am prepping for the udev update this weekend, getting everything
> > updated that doesn't pull in the udev updates.
> > 
> > First thing I did was to eliminate the module-init-tools<>kmod Blocker:
> > 
> > emerge -C module-init-tools %% emerge kmod
> > 
> > and noted the following warnings/errors:
> > 
> > Checking for suitable kernel configuration options...
> > ERROR: setup
> >   CONFIG_MODULES:     is not set when it should be.
> >   CONFIG_MODULE_UNLOAD:     is not set when it should be.
> > 
> > This is a server, and I do not WANT loadable modules enabled...
> > 
> > So, how do I get rid of this warning/error? Or is this nothing to be
> > concerned about if I do not want/need loadable modules?
> > 
> > Thanks
> > 
> 
> 
> The warning makes sense and is correct. kmod is a set of tools to
> manipulate kernel modules. It's pointless having it if the kernel does
> not use modules. Therefore, the error check exists.
> 
> Furthermore,
> 
> $ equery depends kmod
>  * These packages depend on kmod:
> sys-fs/udev-200 (kmod ? >=sys-apps/kmod-12)
> virtual/modutils-0 (sys-apps/kmod[tools])
> 
> 
> $ equery depends virtual/modutils
>  * These packages depend on virtual/modutils:
> app-emulation/virtualbox-modules-4.2.10 (kernel_linux ?virtual/modutils)
> app-emulation/vmware-modules-271.2 (kernel_linux ? virtual/modutils)
> sys-apps/rescan-scsi-bus-1.56 (virtual/modutils)
> 
> $ equery depends rescan-scsi-bus
>  * These packages depend on rescan-scsi-bus:
> sys-apps/sg3_utils-1.35 (>=sys-apps/rescan-scsi-bus-1.24)
> 
> 
> $ equery depends sg3_utils
>  * These packages depend on sg3_utils:
> media-libs/libgpod-0.8.2 (sys-apps/sg3_utils)
> sys-apps/rescan-scsi-bus-1.56 (>=sys-apps/sg3_utils-1.24)
> sys-fs/udisks-1.0.4-r5 (>=sys-apps/sg3_utils-1.27.20090411)
> 
> 
> It's hard to escape those hard masks. Do these steps:
> 
> 1. File a bug, this behaviour is overly constrictive
> 2. Copy kmod to your local overlay and delete the kernel modules check
> 3. USE="-kmod"

I am having exactly the same issue, server with module-less kernel, USE=-kmod set, but portage still wants to pull in virtual/modutils and sys-apps/kmod (and I have nothing "depending" on either of those two).
At the moment I am looking into mdev instead of udev for these servers.
If you open a bug please post the bug# here.

-- 
Dan Johansson, <http://www.dmj.nu>
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