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meez
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Joined: 25 Jul 2004
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PostPosted: Mon Jan 03, 2005 9:36 pm    Post subject: PPC Kernel booting problem Reply with quote

Hi everybody,
I have a small problem with my Gentoo 2004.3 on my ibook 14" 1,25Ghz 768MB RAM. I compiled the kernel but in yaboot where I configured it right, there is an error message " Read failed" while booting this kernel. For this time the only way to work arround was to slim down the kernel to 4573706bye the new one wich .config I downloaded here http://www.aronchi.org/LinuxOnIBookG4 compiles a kernel but the size is 4857571byte with the error "Read failed" again. So my questinion is, if there is a size limit for PPC kernel?

Would be great to get an answer,

Greetings from rainy Germany,

Martin
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ruben
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Joined: 04 Jul 2003
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PostPosted: Mon Jan 03, 2005 11:08 pm    Post subject: Reply with quote

AFAIK, there is no size limit..... in my case:
Code:
yoshi@guava ~ $ ls -l /boot/vmlinux.2.6.7-r13
-rwxr-xr-x  1 root root 6024409 Nov  3 18:54 /boot/vmlinux.2.6.7-r13

When exactly do you get the "read failed" error ? You added the new kernel to /boot/yaboot.conf... and then.... ?
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meez
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PostPosted: Mon Jan 03, 2005 11:11 pm    Post subject: Reply with quote

I recompiled the kernel, inserted the new lines to /etc/yaboot.conf did ybin (-v) and then reboot, and select the new kernel.

Greetings

Martin
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ruben
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PostPosted: Wed Jan 05, 2005 9:20 am    Post subject: Reply with quote

Weird.... is the "read failed" the only output you get ? And i assume ybin doesn't give any errors... hmm... i can't think what might be going wrong....
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_savage
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Joined: 06 Jun 2004
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Location: Redmond, WA

PostPosted: Wed Jan 05, 2005 10:34 am    Post subject: Reply with quote

I have the same problem. However, I do have 2 images and the other one is working. Didn't really bother about the "Read failed" then. I found it odd though that the kernel was being read, and this problem occured after a ybin.

On another note, does anybody have an idea what's going on with my kernel panic here: https://forums.gentoo.org/viewtopic.php?t=274811?? Any help urgently appreciated!

Jens
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Jens Troeger
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fourhead
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Joined: 03 Sep 2003
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Location: Cologne, Germany

PostPosted: Fri Jan 14, 2005 3:58 pm    Post subject: Reply with quote

Hi, I've got the same problem. I downloaded the same kernel config as you did, and it worked right away. But as soon as I modify the kernel (mainly I'm just removing some modules, which makes it even stranger to me) and when I reboot then it sometimes works and sometimes it doesn't. My kernel is between 5.0 and 5.1M.

Tom
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_savage
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PostPosted: Sat Jan 15, 2005 2:06 pm    Post subject: Reply with quote

Sheesh that's one big kernel!!! Mine are usually around 2.5M...
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Jens Troeger
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fourhead
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PostPosted: Sat Jan 15, 2005 2:20 pm    Post subject: Reply with quote

Thats big? Hmm I don't know I have nothing special inside, I'm compiling everything in, but I'm not using much, just what I really need, no firewire, almost no filesystems.

Tom
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_savage
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PostPosted: Sat Jan 15, 2005 2:27 pm    Post subject: Reply with quote

And you compiled all the functionality not needed during boot into modules? Perhaps you still have stuff (FS drivers etc) build in?
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Jens Troeger
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danieli
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Joined: 25 May 2004
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PostPosted: Sat Jan 22, 2005 7:01 pm    Post subject: Reply with quote

You experience this problem due to a "fragmentation" of the kernel image. Check the file with your filesystem tools. I discovered holes in my XFS partition running:

xfs_bmap (name of the image)

Bye[/code]
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