Update https://wiki.ubuntu.com/Kernel/KernelBisection Inquiry

[Joseph Salisbury]

On 10/17/2012 03:02 PM, Christopher M. Penalver wrote:
>> On 10/17/2012 06:34 AM, Christopher M. Penalver wrote:
>>> Dear Ubuntu Kernel Team / Ubuntu Bug Control:
>>>
>>> Regarding https://wiki.ubuntu.com/Kernel/KernelBisection , I and other
>>> linux package original reporters (ex.
>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1029790 ) have
>>> encountered problems when following the directions for this article.
>>>
>>> For example, what happens is when one executes the following at a terminal:
>>> git bisect start Ubuntu-3.2.0-14.23 Ubuntu-3.2.0-15.24
>>>
>>> the debian and debian.master folders get deleted by this command. However, the
>>> next step in the article
>>> https://wiki.ubuntu.com/Kernel/KernelBisection#Give_this_test_a_version_number
>>> mentions that one would want to edit debian.master/changelog.
>> Can you try that again.  I didn't see the debian directories get
>> deleted.  Try this set of commands in a new directory and see if those
>> directories still get deleted:
>> git clone git://kernel.ubuntu.com/ubuntu/ubuntu-precise.git
>> cd ubuntu-precise
>> git bisect start Ubuntu-2.6.35-25.43 Ubuntu-2.6.35-24.42
>> ls debian.master
>>
> Joe, I executed the following in a terminal:
> mkdir ~/Desktop/precise-kernel && cd ~/Desktop/precise-kernel && git
> clone git://kernel.ubuntu.com/ubuntu/ubuntu-precise.git && cd
> ubuntu-precise && git checkout -b mybisect origin/master && git log
> --oneline Ubuntu-3.2.0-14.23..Ubuntu-3.2.0-15.24 | wc && git bisect
> start Ubuntu-3.2.0-14.23 Ubuntu-3.2.0-15.24 && ls debian.master
> ls: cannot access debian.master: No such file or directory
>
> Both the debian and debian.master folders are deleted immediately after
> executing:
> git bisect start Ubuntu-3.2.0-14.23 Ubuntu-3.2.0-15.24

The tags Ubuntu-3.2.0-14.23 and Ubuntu-3.2.0-15.24 are not linear.  
There was a rebase between those two versions.  I added the suggestion 
from Seth on checking where or not tags are linear, which can be found 
under the notes:
https://wiki.ubuntu.com/Kernel/KernelBisection#Notes

Try bisecting between two tags that are linear.  For example: 
Ubuntu-3.2.0-31.50 and Ubuntu-3.2.0-31.49.  You will see that the debian 
directories do not get deleted.
>
> This was done after reading the following the bisect example
> https://wiki.ubuntu.com/Kernel/KernelBisection?action=recall&rev=10#How_to_bisect_a_sequence_of_commits_to_find_the_bad_one .
>
> Thank you for responding and looking forward to resolving this issue
> with the article.
>
> --
> Christopher M. Penalver
> E-Mail: christopher.penalver at gmx.com
> https://launchpad.net/~penalvch
>