On 27/04/14 13:00, Пламен Петров wrote:
> The problem reported in this thread has been RESOLVED.
> 
> It's not BTRFS's fault.
> 
> Debugging on my part led to the actual problem in do_mounts.c - some
> filesystems mount routines return error codes other than 0, EACCES
> and EINVAL and such return codes result in the kernel panicking
> without trying to mount root with all of the available filesystems.
> 
> Patch is available as attachment to bug 74901 -
> https://bugzilla.kernel.org/show_bug.cgi?id=74901 . The bugentry
> documents how I managed to find the problem.

Well deduced and that looks to be a good natural clean fix.

My only question is: What was the original intent to deliberately fail
if something other than EACCES or EINVAL were reported?


> Also, the patch has been sent to the linux kernel mailing list - see
> http://news.gmane.org/find-root.php?group=gmane.linux.kernel&article=1691881
> Hopefully, it will find its way into the kernel, and later on - in
> stable releases.

That all looks very good and very thorough.


> Thanks to you all! ------------------------------ Plamen Petrov

Thanks to you for chasing it through!

AND for posting the "Resolved" to let everyone know. :-)


Regards,
Martin




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