[gentoo-user] Failure of zfs-kmod with 3.13.* kernel

[gentoo-user] Failure of zfs-kmod with 3.13.* kernel

[Scott Ellis]

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When trying to build zfs-kmod against a a 3.13.[0|1|2] kernel, spl works
fine, but zfs fails.  It looks like the issue is that the configure script
isn't doing quite the right check for bdi_setup_and_register, so
HAVE_BDI_SETUP_AND_REGISTER doesn't get defined, and then there's a
mismatch in the definitions between zfs and the kernel source.  The
offending bit in the configure log looks to be:


configure:17996: checking whether bdi_setup_and_register() is available
configure:18024: cp conftest.c build && make modules -C /usr/src/linux
EXTRA_CFLAGS=-Werror
M=/var/tmp/portage/sys-fs/zfs-kmod-0.6.2-r3/work/zfs-zfs-0.6.2/build
/var/tmp/portage/sys-fs/zfs-kmod-0.6.2-r3/work/zfs-zfs-0.6.2/build/conftest.c:
In function 'main':
/var/tmp/portage/sys-fs/zfs-kmod-0.6.2-r3/work/zfs-zfs-0.6.2/build/conftest.c:91:25:
error: ignoring return value of 'bdi_setup_and_register', declared with
attribute warn_unused_result [-Werror=unused-result]
   bdi_setup_and_register(NULL, NULL, 0);
                         ^

Anyone else seeing this?

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Re: [gentoo-user] Failure of zfs-kmod with 3.13.* kernel

[Neil Bothwick]

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On Sat, 8 Feb 2014 10:07:31 -0800, Scott Ellis wrote:

> When trying to build zfs-kmod against a a 3.13.[0|1|2] kernel, spl works
> fine, but zfs fails.  It looks like the issue is that the configure
> script isn't doing quite the right check for bdi_setup_and_register, so
> HAVE_BDI_SETUP_AND_REGISTER doesn't get defined, and then there's a
> mismatch in the definitions between zfs and the kernel source.  The
> offending bit in the configure log looks to be:

Bug report with hacky workaround

https://bugs.gentoo.org/show_bug.cgi?id=499672

Works for me.


-- 
Neil Bothwick

Profanity, The Language of Computer Professionals.

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Re: [gentoo-user] Failure of zfs-kmod with 3.13.* kernel

[Scott Ellis]

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Ah, I missed that bug report. Thanks for the pointer (and the workaround).


On Sat, Feb 8, 2014 at 11:50 AM, Neil Bothwick <neil@digimed.co.uk> wrote:

> On Sat, 8 Feb 2014 10:07:31 -0800, Scott Ellis wrote:
>
> > When trying to build zfs-kmod against a a 3.13.[0|1|2] kernel, spl works
> > fine, but zfs fails.  It looks like the issue is that the configure
> > script isn't doing quite the right check for bdi_setup_and_register, so
> > HAVE_BDI_SETUP_AND_REGISTER doesn't get defined, and then there's a
> > mismatch in the definitions between zfs and the kernel source.  The
> > offending bit in the configure log looks to be:
>
> Bug report with hacky workaround
>
> https://bugs.gentoo.org/show_bug.cgi?id=499672
>
> Works for me.
>
>
> --
> Neil Bothwick
>
> Profanity, The Language of Computer Professionals.
>

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