what is enabled in kernel?[solved]

while true · Last edited by while true on Sun Jul 19, 2015 9:42 am; edited 1 time in total

hello gentoo people,

I have neglected my gentoo system for over two months, and update is a total mess.

I decided to reinstall gentoo, but i am afraid of this kernel...
is there a way to see what is enabled in current kernel, so I can enable them in my new installation?

I looked in /usr/src/linux, but I could not know what is what.

Thank you
_________________
Kind regards, Goran Mitic

alive
while true
kick ass

szatox · Advocate Joined: 27 Aug 2013 Posts: 3135

You most likely can get config from your active kernel. AFAIR this option is enabled by default, so just go for
zcat /proc/config.gz
Dump the output to file and later save as /usr/src/linux/.config and build kernel with --oldconfig
Alternatively you can copy .config from your previous kernel sources directory.

Also, updating 2 months old installation is not so bad, in worst case emerge -aeuDN world should do the trick. Even if it takes ages to complete.

while true · Posted: Sat Jul 18, 2015 9:51 am Post subject:

jonathan183 · Guru Joined: 13 Dec 2011 Posts: 318

I suggest you take a copy of /usr/src/linux/.config on your existing system.
To be honest you should be able to update a system which has 2 months worth of updates, but if you decide to do a fresh install then I suggest you copy the /etc tree from your existing install so you can copy config information back on to your new install rather than configure everything from scratch.
There are a few other files it's worth taking of a copy of as well, the world file means you will have a list of packages you installed.

EmaRsk · Apprentice Joined: 07 Sep 2004 Posts: 158 Location: Italy

@while true, there are a few places where the kernel config could be:

/proc/config.gz (if you enabled IKCONFIG and IKCONFIG_PROC in the kernel)
If you enabled IKCONFIG as a module, you need to "modprobe configs" to see /proc/config.gz
If you enabled IKCONFIG (not as module), but not IKCONFIG_PROC, you can still extract the config from the kernel image with /usr/src/linux/scripts/extract-ikconfig (I haven't tested this one)
/boot/config-*
/usr/src/linux/.config

Roman_Gruber · Posted: Sat Jul 18, 2015 3:51 pm Post subject:

while true · Posted: Sat Jul 18, 2015 10:46 pm Post subject:

hey guys, thanks for input

I managed to make a copy of /usr/src/linux/.config file to mach against my new installation, which is almost done, i am having some network issiues which i posted over in Network.

Cheers
_________________
Kind regards, Goran Mitic

alive
while true
kick ass