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Massimo B.
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Joined: 09 Feb 2005
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 Posted: Wed May 10, 2017 7:52 am Post subject: genkernel init: Can't create /proc/sys/kernel/hotplug |
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While booting I see very early this message for a long time now:
| Code: | | line 357 can't create /proc/sys/kernel/hotplug: nonexistent directory |
I tried ck-sources-4.10.14 and gentoo-sources-4.11.0. I'm running sys-fs/udev-233 with sys-apps/openrc-0.25.
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Last edited by Massimo B. on Wed May 10, 2017 9:48 am; edited 1 time in total |
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eccerr0r
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Joined: 01 Jul 2004
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Location: almost Mile High in the USA
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| Posted: Wed May 10, 2017 9:20 am Post subject: |
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Could you post some context? Can't seem to find any files that could possibly generate that message, at least on my system...
It definitely loaded init, but that's all that I can glean from that message...
Do you use initramfs? What generated that initramfs?
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Massimo B.
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Joined: 09 Feb 2005
Posts: 1794
Location: PB, Germany
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| Posted: Wed May 10, 2017 9:48 am Post subject: |
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I use a genkernel generated initramfs. /dev/default/grub has: | Code: | | GRUB_CMDLINE_LINUX_DEFAULT="keymap=de splash=silent,theme:livecd-2007.0 console=tty1 quiet crypt_root=UUID=e609e76c-419f-4677-a2fe-87229073ffff root=LABEL=gentoo dobtrfs" |
You see this is a btrfs-on-luks. I found the involved file:
| Code: | # sed -n '357p' /usr/share/genkernel/defaults/linuxrc
echo /sbin/mdev > /proc/sys/kernel/hotplug |
Any idea?
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eccerr0r
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Joined: 01 Jul 2004
Posts: 9733
Location: almost Mile High in the USA
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| Posted: Wed May 10, 2017 9:54 am Post subject: |
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That hotplug thing is "obsolete" with the new udev, but since you're in initramfs with busybox mdev, you still need it. So my guess is you need to turn on that legacy hotplug support in your kernel config: CONFIG_UEVENT_HELPER=y
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