Cannot Find Map file

business_kid · 01-30-2009, 09:59 AM

Strange. Have you posted on the lfs-support@linuxfromscratch.org list?
The other thing that springs top mind is to run /sbin/ldconfig, even if you have no modules. This creates certain files (modules.dep notably) and without that, inspection of System.map will throw an error.

RikR · 02-04-2009, 04:02 AM

Hi,

I have the same message in the kernel log (LFS 6.4):

Feb 3 18:30:15 habitat kernel: Inspecting /boot/System.map-2.6.27.4
Feb 3 18:30:16 habitat kernel: Cannot find map file.
Feb 3 18:30:16 habitat kernel: Loaded 43507 symbols from 1 module.

When I create a symbolic link "System.map":

Feb 4 01:42:53 habitat kernel: Inspecting /boot/System.map-2.6.27.4
Feb 4 01:42:54 habitat kernel: Inspecting /boot/System.map
Feb 4 01:42:54 habitat kernel: Cannot find map file.
Feb 4 01:42:54 habitat kernel: Loaded 43507 symbols from 1 module.

Now I inspected the kernel-log of my Ubuntu 8.10 install, surprise !!!

Feb 4 01:47:10 rik-laptop kernel: Inspecting /boot/System.map-2.6.27-9-generic
Feb 4 01:47:10 rik-laptop kernel: Cannot find map file.
Feb 4 01:47:10 rik-laptop kernel: Loaded 53395 symbols from 100 modules.

So, I think a will rest this for a moment as the LFS install does not show any problems.

Regards.

business_kid · 02-05-2009, 02:21 PM

Quote:

Originally Posted by trevork1954

Just an additional note (yes, I know this thread is closed!): I've had exactly the same problem in LFS6.4 with a lovingly hand-crafted kernel and (just like gazza1z) I worked exactly from the book. System.map-($uname -r) is present in /boot AND I soft-linked it to /boot/System.map.

I built LFS 6.3 last year in a similar manner with no problems at all (so it's unlikely I've been an idiot this time).

Unfortunately (according to the klogd manual page) there are some drivers that require the map, so I can't just ignore it (and I hate unexplained things in my distro anyway). There's been no subsequent Internet posting that solves this issue, so I guess I'll have to trawl through the source code for klogd next :-(

Making an all static kernel is bad practise. It's unneccessary overhead which slows things down, and clogs memory. You cannot pass any options to any module. The sound instructions, for one, suggest an all modular sound setup. I am sure you are tripping up something silly in the kernel. I imagine you can check the LFS archives and find a similar thread, where this is explained.

jimbox · 06-11-2009, 01:35 AM

for whoever it may benefit-

the gurb errors 15 and 17 i was getting were due to an incorrect /boot/grub/devices.map file (which is what led me to this thread).

i initially thought it was my System.map file too- but i eventually discovered the problem to lie with devices.map and once rectified grub booted normally.

it was strange b/c i could edit the grub entries during boot and use tab completion to specify the kernel image file and even an initrd.img- so i considered this confirmation that these files actually existed and were being found.... so why wouldnt grub boot to them? well- after changing boot disks and kernel it turned out some of my kernel device names changed for hd0 & hd1 for sda, sdb, hda, etc. using slax to boot i mounted my boot partition and hand edited /boot/grub/devices.map to reflect the correct devices and made sure my /etc/fstab coincided.