[lustre-devel] CentOS 6 - Build problems with kmod

[Patrick Farrell]

Thanks, Ben - That looks likely to work.  Still more than a bit weird.

Looking at why things are still working internally at Cray for CentOS 6, 
I think it's because we're not using lustre.spec (for boring and 
complicated reasons).

It seems very likely the problem was introduced by LU-5614 - 
http://review.whamcloud.com/#/c/12063/

Is Intel still building and installing on CentOS 6 automatically? Or has 
all automated testing moved to CentOS 7?

- Patrick
On 08/19/2016 08:57 AM, Ben Evans wrote:
> When I ran into the problem, I did an rpm -I --nodeps and it worked 
> fine.  The errors you are seeing are dependencies listed in the RPMs, 
> not ones used by the actual .ko's.
>
> I spent some time trying to dig up where the 'kmod-' prefix for all 
> the kernel symbols was getting inserted, but couldn't track it down.
>
> -Ben Evans
>
> From: lustre-devel <lustre-devel-bounces at lists.lustre.org 
> <mailto:lustre-devel-bounces at lists.lustre.org>> on behalf of Patrick 
> Farrell <paf at cray.com <mailto:paf at cray.com>>
> Date: Thursday, August 18, 2016 at 6:11 PM
> To: "Christopher J. Morrone" <morrone2 at llnl.gov 
> <mailto:morrone2 at llnl.gov>>, "lustre-devel at lists.lustre.org 
> <mailto:lustre-devel at lists.lustre.org>" <lustre-devel at lists.lustre.org 
> <mailto:lustre-devel at lists.lustre.org>>
> Subject: Re: [lustre-devel] CentOS 6 - Build problems with kmod
>
>
> Chris,
>
>
> I agree with your contention about the kernel symbols, that's why I 
> rebuilt from scratch and reinstalled.  Just did it again.  Still 
> getting the error.
>
>
> > It sounds like you built your own kernel.  Did you install all the
> > resulting kernel packages before building lustre (including any
> > devel-related packages)?
>
> Yes, but this process doesn't produce anything other than the kernel RPM.
>
>
> > Is your custom kernel the newest kernel
> > installed on your system?
>
> Yes.  It's the newest and it's what's booted.
>
>
> So, does anyone have any insight in to what needs to change in the 
> documented build process so I can build and install Lustre on CentOS 
> 6?  (ldisksfs, not ZFS, so I must build the kernel)  It seems likely 
> that I'm missing some symbol RPMs or similar, but kernel-syms is a 
> SuSE only thing, I believe.  I believe Intel is still building and 
> installing ldiskfs Lustre on CentOS 6, so there must be something...?
>
>
> - Patrick
>
> ------------------------------------------------------------------------
> *From:* lustre-devel <lustre-devel-bounces at lists.lustre.org 
> <mailto:lustre-devel-bounces at lists.lustre.org>> on behalf of 
> Christopher J. Morrone <morrone2 at llnl.gov <mailto:morrone2 at llnl.gov>>
> *Sent:* Thursday, August 18, 2016 3:44:52 PM
> *To:* lustre-devel at lists.lustre.org <mailto:lustre-devel at lists.lustre.org>
> *Subject:* Re: [lustre-devel] CentOS 6 - Build problems with kmod
> On 08/18/2016 01:43 PM, Christopher J. Morrone wrote:
> > Yes, those instructions should be taken with a huge grain of salt.  For
> > instance, instructions for compiling lustre should really employ a
>
> s/should/should NOT/
>
> > custom user and talk about "useradd" and such. Also, most users can
> > skip the whole custom-patched-kernel section. Hopefully all developers
> > will be able to stop that too by the time 2.9.0 comes out.
> >
> > The error you are seeing almost certainly means that you don't have a
> > kernel installed that offers symbols compatible with the kernel that
> > lustre was compiled against.
> >
> > It sounds like you built your own kernel.  Did you install all the
> > resulting kernel packages before building lustre (including any
> > devel-related packages)?  Is your custom kernel the newest kernel
> > installed on your system?
> >
> > Chris
> >
> > On 08/18/2016 01:00 PM, Patrick Farrell wrote:
> >> Good afternoon,
> >>
> >>
> >> I'm trying to build and install updated Lustre master on CentOS 6 for
> >> the first time in a month or two, and I'm having trouble.
> >>
> >>
> >> I use the build procedure documented here:
> >>
> >> https://wiki.hpdd.intel.com/pages/viewpage.action?pageId=8126821
> >>
> >>
> >> I've got some new kmod-* RPMs, and I need to install those to install
> >> Lustre, which is fine, except I get a huge string of messages like this
> >> when I try:
> >>
> >> error: Failed dependencies:
> >>         ksym(__init_waitqueue_head) = 0xffc7c184 is needed by
> >> kmod-lustre-2.8.56_44_g288e55b_dirty-1.el6.x86_64
> >>         ksym(__mutex_init) = 0x4bf79039 is needed by
> >> kmod-lustre-2.8.56_44_g288e55b_dirty-1.el6.x86_64
> >>
> >> I've rebuilt and reinstalled my kernel with this latest version of
> >> Lustre.  Error messages remain the same, and I can't install.
> >>
> >>
> >> Any thoughts or advice?
> >>
> >>
> >> - Patrick
> >>
> >>
> >>
> >> _______________________________________________
> >> lustre-devel mailing list
> >> lustre-devel at lists.lustre.org <mailto:lustre-devel at lists.lustre.org>
> >> http://lists.lustre.org/listinfo.cgi/lustre-devel-lustre.org
> >>
> >
> > .
> >
>
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