Re: [PATCH] dpkg-native: Avoid 'file changed' errors from tar

[Mark Hatle <mark.hatle@windriver.com>]

On 3/30/15 11:21 AM, Otavio Salvador wrote:
> On Mon, Mar 30, 2015 at 1:02 PM, Richard Purdie
> <richard.purdie@linuxfoundation.org> wrote:
>> On Mon, 2015-03-30 at 12:02 -0300, Otavio Salvador wrote:
>>> +When running do_package_write_deb, we have trees of symlinked files
>>> +such as the dbg source files in ${PN}-dbg. If something makes another
>>> +copy of one of those files (or deletes one), the number of links a file
>>> +has changes and tar can notice this, e.g.:
>>> +
>>> +| DEBUG: Executing python function do_package_deb
>>> +| dpkg-deb: building package `sed-ptest' in
>>> `/media/build1/poky/build/tmp/work/i586-poky-linux/sed/4.2.2-r0/deploy-debs/i586/sed-ptest_4.2.2-r0.3_i386.deb'.
>>> +| tar: ./usr/lib/sed/ptest/testsuite/tst-regex2: file changed as we read it
>>> +| dpkg-deb: error: subprocess tar -cf returned error exit status 1
>>> +
>>> +Tar returns an error of 1 when files 'change' and other errors codes
>>> +in other error cases. We tweak dpkg-deb here so that it ignores an exit
>>> +code of 1 from tar. The files don't really change (and we have locking in
>>> +place to avoid that kind of issue).
>>>
>>> This is exactly what I would expect for the long commit log. Sorry but
>>> I strongly disagrese with you as the commit log in the patch does
>>> connect with the short log so I still believe the commit log could be
>>> improved.
>>
>> Well, I strong disagree with that, I don't believe it makes sense to cut
>> and paste the same information into both places, sorry.
> 
> I disagree someone should go into a patch header to understand it.
> 

I agree with Otavio here.  When generating both short and long changelogs, I
always use the commit messages.  I don't inspect the contents of the changes to
understand what happened.  Having to inspect means that I can't automate the
process using the git commands.

--Mark