Re: Regression with ext4 in kernel 2.6.39-rc7? (Was: testing ext4 master branch)

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On Fri, May 13, 2011 at 8:28 PM, Eric Sandeen <sandeen@xxxxxxxxxx> wrote:
> On 5/13/11 12:25 PM, Amir Goldstein wrote:
>> On Fri, May 13, 2011 at 6:25 PM, Eric Sandeen <sandeen@xxxxxxxxxx> wrote:
>>> On 5/13/11 9:56 AM, Ted Ts'o wrote:
>>>> On Fri, May 13, 2011 at 12:17:03PM +0300, Amir Goldstein wrote:
>>>>>
>>>>> Can anyone try to reproduce the error with xfstest 005 and the crash
>>>>> with xfstest 232?
>>>>
>>>> Xfstest #5 broke because of a change in the VFS, which now allows up
>>>> to 40 nested symlinks.  So that's a matter of your xfstests being too
>>>> old.
>>>>
>>>> The version of xfstests I've been using on my KVM box is too old to
>>>> have test 232, so I haven't been able to test it.  I've been trying to
>>>> use a newer version of xfstests, but xfstests doesn't build on either
>>>> Ubuntu 10.04 (LTS), Debian stable, or Debian unstable, due to the use
>>>> of newer XFS ioctl's and xfsctl's that aren't defined in the system
>>>> header files.  The fact that it doesn't work on Ubuntu LTS and Stable
>>>> is not that surprising, I suppose, but I was a bit disappointed that
>>>> it doesn't work on Debian unstable.
>>>
>>> I missed that bug report :)  If you can send me the details of the
>>> failures we can probably add configure tests for any new ioctls
>>> that are causing build failures.
>>>
>>>> Since I don't have a Fedora system handy --- which header file are
>>>> things like "struct xfs_flock64" supposed to be defined these days?
>>>
>>> Hm, well, on my Fedora system, /usr/include/xfs/xfs_fs.h, from xfsprogs-devel.
>>>
>>> I don't think that has changed in a very long time...
>>>
>>> I also package an xfsprogs-qa-devel which has some additional pieces in
>>> it to support xfstests.  Debian could do the same ... "make install-qa"
>>> in xfsprogs puts those bits into the root.
>>>
>>
>> After xfstests failed to build on Ubuntu 10.10,  I followed the advice omitted
>> by the build script to run "make install-qa", to solve the problem.
>> It took me a while to figure exactly where I should run the command,
>> but in the end I pulled the xfsprogs tree, ran "make; make install;
>> make install-qa"
>> and from there on things were looking better.
>
> I can ask Nathan if he can package the qa bits for debian.
>
> Or, you all could just use Fedora ;)

As a side note, I started using Ubuntu because their Live CD can build
kernel modules (with no need to install any packages). I found it very
convenient for testing my module with various kernels.
Fedora Live CD wasn't as useful.

>
> -Eric
>
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