Re: [gentoo-user] Re: After /usr conflation: why not copy booting software to /sbin rather than initramfs?

[Canek Peláez Valdés]

On Mon, Apr 2, 2012 at 7:19 PM, Dale <rdalek1967@×××××.com> wrote:
> Canek Peláez Valdés wrote:
>> On Mon, Apr 2, 2012 at 5:21 PM, Dale <rdalek1967@×××××.com> wrote:
>>> Neil Bothwick wrote:
>>>> zgrep DEVTMP /proc/config.gz
>>>
>>>
>>> Ooops, it sort of snipped a bit much.  lol   Here you go:
>>>
>>> root@fireball / # zgrep DEVTMP /proc/config.gz
>>> # CONFIG_DEVTMPFS is not set
>>> root@fireball / #
>>>
>>> Looks like a nope to me.  ;-)
>>
>> That was the reason for asking for your /usr/src/linux/.config file.
>> The udev ebuild ask for:
>>
>> CONFIG_CHECK="~BLK_DEV_BSG ~DEVTMPFS ~HOTPLUG ~INOTIFY_USER ~NET
>> ~PROC_FS ~SIGNALFD ~SYSFS ~!IDE ~!SYSFS_DEPRECATED
>> ~!SYSFS_DEPRECATED_V2"
>>
>> The dracut ebuild ask for:
>>
>> CONFIG_CHECK="~BLK_DEV_INITRD ~DEVTMPFS ~MODULES"
>>
>> So please check that you have all those options (and don't have the
>> ones with !), recompile your kernel, and reboot.
>>
>> Also, the divergence between /boot/kernel... and (hd0,0)/kernel... in
>> your grub could be causing  funny things. Check that also.
>>
>> Regards.
>
>
> OK.  I hate modules.  Can they be built into the kernel?  The only
> module I have is nvidia for my video card.

MODULES is only for the kernel to be *able* to load modules, not to
*make* modules. If you use nvidia.ko, you must already have it. All
the options can be compiled into the kernel; I had them like that:

$ grep "BLK_DEV_BSG\\|DEVTMPFS\\|HOTPLUG\\|INOTIFY_USER\\|NET=\\|PROC_FS\\|SIGNALFD\\|SYSFS"
/usr/src/linux/.config
# CONFIG_SYSFS_DEPRECATED is not set
CONFIG_HOTPLUG=y
CONFIG_SIGNALFD=y
CONFIG_BLK_DEV_BSG=y
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_MEMORY_HOTPLUG is not set
CONFIG_HOTPLUG_CPU=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
CONFIG_ACPI_HOTPLUG_CPU=y
# CONFIG_HOTPLUG_PCI is not set
CONFIG_NET=y
CONFIG_INET=y
CONFIG_WIRELESS_EXT_SYSFS=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_SCSI_PROC_FS is not set
# CONFIG_ISCSI_BOOT_SYSFS is not set
CONFIG_ETHERNET=y
CONFIG_USB_USBNET=y
CONFIG_RTC_INTF_SYSFS=y
# CONFIG_DMI_SYSFS is not set
CONFIG_INOTIFY_USER=y
CONFIG_PROC_FS=y
CONFIG_SYSFS=y


>
> Also, if you can put this in one email, what about the /dev line in fstab?

/dev should not be in /etc/fstab; but since you had this error:

> switch_root: failed to mount moving /dev to /sysroot/dev: Invaild argument
> switch_root: forcing unmount of /dev
> switch_root: failed to unlink dev: Directory not empty

I thought that it was maybe because you had /dev  on fstab. Now we
know it was because you didn't compile DEVTMPFS in your kernel.

> I didn't check the ebuild but I don't recall seeing anything when I
> emerged dracut either.  o_O   Maybe we are on to something here.  ^_O

The messages appear for sure; CONFIG_CHECK is defined in
/usr/portage/eclass/linux-info.eclass, and if a config option is
missing, a non-fatal warning will appear. If you have them, check your
emerge logs:

cat /var/log/portage/sys-fs\:udev-* | less

You can look for the string:

 * Checking for suitable kernel configuration options...
 [ ok ]

(Obviously that's in my case).

You could also reemerge udev and dracut; if you haven't changed your
kernel config options, they will complain loudly about it.

I think that will solve the mistery; however, we will not know until
you reboot and actually test it (after recompiling your kernel, of
course).

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México