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dechah
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Joined: 18 Jun 2002
Posts: 37
Location: Melbourne

PostPosted: Tue Jul 02, 2002 1:13 am    Post subject: Is it possible to swap kernel sources? Reply with quote

I recently installed Gentoo with XFS filesystems on a couple of my partitons. I faithfully followed the installation guide and I am currently running the kernel compiled from the "xfs-sources". I recently discovered that the latest "gentoo-sources" has XFS filesystem support included.

If it is not too much trouble, I would prefer to switch to this kernel source.

Can I simply grab the lastest gentoo-sources package, compile it with the correct settings and then replace my existng bzImage in the /boot partition with the new bzImage created from the gentoo-sources package.

I am not experienced enough to know if this is going to break anything in my current Gentoo install. I guess I should just try it and see, but if anyone has already gone down this path before me, I would love to know if there are any tips or tricks I should consider first.

Regards

Dechah
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FINITE
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Joined: 10 May 2002
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PostPosted: Tue Jul 02, 2002 1:29 am    Post subject: Reply with quote

I would just dive right in :D I would seriously. It shouldn't hurt anything at all. You would need to update your boot loader to be able to boot your new kernel. Otherwise you should have no problems.
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rac
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PostPosted: Tue Jul 02, 2002 1:44 am    Post subject: Reply with quote

One thing to watch out for if you are trying to keep your existing kernel bootable in case of problems is the modules directory. If you try to install two versions of the same kernel version, you may end up overwriting the /lib/modules/ subdirectory and cause yourself some grief.
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rommel
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PostPosted: Tue Jul 02, 2002 2:51 am    Post subject: Reply with quote

you know i did that and got a kernel panic...but because xfs was performing so pathetically i didnt even try to figure it out i just blew the install and started over...you should be careful...and i think unless you want something specific that the vanilla-xfs kernel doesnt support you should just leave well enough alone
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AutoBot
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PostPosted: Tue Jul 02, 2002 7:36 am    Post subject: Reply with quote

rommel wrote:
you know i did that and got a kernel panic...but because xfs was performing so pathetically i didnt even try to figure it out i just blew the install and started over...you should be careful...and i think unless you want something specific that the vanilla-xfs kernel doesnt support you should just leave well enough alone


Actually I run gentoo so I don't have to leave well enough alone :D

Here are some easy steps you can follow dechah:

Code:

su -
emerge rsync
emerge gentoo-sources
# copy the .config to whatever the gentoo-sources dir is currently
cp /usr/src/linux/.config /usr/src/linux-2.4.19-r7
# point the /usr/src/linux symlink to gentoo sources, same rule above applies
ln -s /usr/src/linux-2.4.19-r7 /usr/src/linux
cd /usr/src/linux
make menuconfig
make dep && make bzImage clean modules modules_install
mount /boot
mv /boot/bzImage /boot/bzImage.old
cp /usr/src/linux/arch/i386/boot/bzImage /boot
# make sure there is a bzImage.old and a bzImage
ls /boot
umount /boot
# edit grub or lilo to reflect the .old kernel if needed then
reboot

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DArtagnan
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Joined: 30 Apr 2002
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PostPosted: Tue Jul 02, 2002 8:01 am    Post subject: Reply with quote

AutoBot wrote:
rommel wrote:
you know i did that and got a kernel panic...but because xfs was performing so pathetically i didnt even try to figure it out i just blew the install and started over...you should be careful...and i think unless you want something specific that the vanilla-xfs kernel doesnt support you should just leave well enough alone


Actually I run gentoo so I don't have to leave well enough alone :D

Here are some easy steps you can follow dechah:

Code:

su -
emerge rsync
emerge gentoo-sources
# copy the .config to whatever the gentoo-sources dir is currently
cp /usr/src/linux/.config /usr/src/linux-2.4.19-r7
# point the /usr/src/linux symlink to gentoo sources, same rule above applies
ln -s /usr/src/linux-2.4.19-r7 /usr/src/linux
cd /usr/src/linux
make menuconfig
make dep && make bzImage clean modules modules_install
mount /boot
mv /boot/bzImage /boot/bzImage.old
cp /usr/src/linux/arch/i386/boot/bzImage /boot
# make sure there is a bzImage.old and a bzImage
ls /boot
umount /boot
# edit grub or lilo to reflect the .old kernel if needed then
reboot


Quote:

umount /boot
# edit grub or lilo to reflect the .old kernel if needed then


First edit grub and then umount the /boot :-)
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AutoBot
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PostPosted: Tue Jul 02, 2002 8:04 am    Post subject: Reply with quote

Good call pacman, it's 3 A.M. and I am slipping into a upright coma lol.
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DArtagnan
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Joined: 30 Apr 2002
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Location: Israel, Jerusalem

PostPosted: Tue Jul 02, 2002 8:06 am    Post subject: Reply with quote

:-)
Go sleep and gimme your username/password `s root to your linux box :p
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dechah
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Joined: 18 Jun 2002
Posts: 37
Location: Melbourne

PostPosted: Tue Jul 02, 2002 10:42 am    Post subject: Reply with quote

Thanks for all your assistance people




AutoBot wrote:
rommel wrote:
you know i did that and got a kernel panic...but because xfs was performing so pathetically i didnt even try to figure it out i just blew the install and started over...you should be careful...and i think unless you want something specific that the vanilla-xfs kernel doesnt support you should just leave well enough alone


Actually I run gentoo so I don't have to leave well enough alone :D

Here are some easy steps you can follow dechah:

Code:

su -
emerge rsync
emerge gentoo-sources
# copy the .config to whatever the gentoo-sources dir is currently
cp /usr/src/linux/.config /usr/src/linux-2.4.19-r7
# point the /usr/src/linux symlink to gentoo sources, same rule above applies
ln -s /usr/src/linux-2.4.19-r7 /usr/src/linux
cd /usr/src/linux
make menuconfig
make dep && make bzImage clean modules modules_install
mount /boot
mv /boot/bzImage /boot/bzImage.old
cp /usr/src/linux/arch/i386/boot/bzImage /boot
# make sure there is a bzImage.old and a bzImage
ls /boot
umount /boot
# edit grub or lilo to reflect the .old kernel if needed then
reboot

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Dechah
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