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Bug#691665: [squeeze] Under CentOS 6.3 as a host OS Debian kernel hangs as a guest OS (KVM-QEMU)



Jonathan,

I did some tests with the binary kernels I have found in the snapshot.debian.org package archive. Here are the results:

I still experience the same problem with all 3.3.x kernels ( up to linux-image-3.3.0-trunk-amd64 amd64 3.3.4-1~experimental.1 )

The problem is first resolved in this kernel: linux-image-3.4-trunk-amd64 amd64 3.4.1-1~experimental.1

I hope this helps.

Zoltan

On 10/29/2012 9:22 AM, Jonathan Nieder wrote:
reassign 691665 src:linux linux-2.6/2.6.32-46
found 691665 linux/3.2.23-1
fixed 691665 linux/3.5.5-1~experimental.1
quit

Zoltan Frombach wrote:

I have good news. Debian Linux works perfectly with the 3.5.5 kernel! I've
tried with 6 and 8 vcpus and 8GB of RAM assigned to the VM and it boot up
very fast without incident every time I've tried.
Yay!  Thanks much.

Please let me know how do you want me to proceed. Should we try to find out
why this kernel works with more than 4 vcpus while the 2.6.32 kernel (and
3.2 from backports) does not? Or should I just try to use the 3.5.5 kernel
in production environment - I know it is not recommended as the latest
kernel is not well tested... What do you recommend?
The next step is to find which patch fixed it, which probably will
involve some staring at the list of patches.  If you want to narrow
down the range, it would be interesting to bisect through the list of
precompiled kernels at http://snapshot.debian.org/package/linux-2.6/
to find the newest broken and oldest fixed one.

Jonathan



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