Building the Ceph client on Lucid Lynx

Building the Ceph client on Lucid Lynx

[Steena Monteiro]

I'm trying to build the Ceph client on Ubuntu 10.04.2 with kernel
2.6.32-28-generic.  make -C install gives:

make: Entering directory `/usr/src/ceph-client-standalone/ceph'
make -C /lib/modules/2.6.32-28-generic/build
M=/usr/src/ceph-client-standalone/ceph CONFIG_CEPH_FS=m modules
make[1]: Entering directory `/usr/src/linux-headers-2.6.32-28-generic'
  CC [M]  /usr/src/ceph-client-standalone/ceph/super.o
/usr/src/ceph-client-standalone/ceph/super.c:585: warning: initialization from
incompatible pointer type
/usr/src/ceph-client-standalone/ceph/super.c:870: error: unknown field ‘mount’
specified in initializer
/usr/src/ceph-client-standalone/ceph/super.c:870: warning: initialization makes
integer from pointer without a cast
make[2]: *** [/usr/src/ceph-client-standalone/ceph/super.o] Error 1
make[1]: *** [_module_/usr/src/ceph-client-standalone/ceph] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-2.6.32-28-generic'
make: *** [all] Error 2
make: Leaving directory `/usr/src/ceph-client-standalone/ceph'

I'd appreciate some insight into solving this.

Thanks in advance,
Steena


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Re: Building the Ceph client on Lucid Lynx

[Tommi Virtanen]

On Fri, Mar 18, 2011 at 10:23:37PM +0000, Steena Monteiro wrote:
> I'm trying to build the Ceph client on Ubuntu 10.04.2 with kernel
> 2.6.32-28-generic.  make -C install gives:
> 
> /usr/src/ceph-client-standalone/ceph/super.c:870: error: unknown field ‘mount’
> specified in initializer

That changed in ceph-client-standalone.git commit
ff8a8d2006dca58f71b5dc5df0c95b8f837a0a4e, which mirrors linux.git
commit a7f9fb205a88ab9af675a68fc554cf51dafc8b60, which was a VFS
refactoring by Al Viro for Linux 2.6.37-rc1.

You'll need to build an older version of ceph-client-standalone, or
perhaps try reverting that one commit (git revert ff8a8d). Good luck.

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Re: Building the Ceph client on Lucid Lynx

[Gregory Farnum]

On Friday, March 18, 2011 at 3:45 PM, Tommi Virtanen wrote: 
> On Fri, Mar 18, 2011 at 10:23:37PM +0000, Steena Monteiro wrote:
> > I'm trying to build the Ceph client on Ubuntu 10.04.2 with kernel
> > 2.6.32-28-generic. make -C install gives:
> > 
> > /usr/src/ceph-client-standalone/ceph/super.c:870: error: unknown field ‘mount’
> > specified in initializer
> 
> That changed in ceph-client-standalone.git commit
> ff8a8d2006dca58f71b5dc5df0c95b8f837a0a4e, which mirrors linux.git
> commit a7f9fb205a88ab9af675a68fc554cf51dafc8b60, which was a VFS
> refactoring by Al Viro for Linux 2.6.37-rc1.
> 
> You'll need to build an older version of ceph-client-standalone, or
> perhaps try reverting that one commit (git revert ff8a8d). Good luck.

FYI: ceph-client-standalone is supposed to build on older kernels, although it's only loosely maintained. Let us know how it goes -- if it doesn't work we'll put at least a few developer hours into it!
-Greg



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Re: Building the Ceph client on Lucid Lynx

[Gregory Farnum]

On Friday, March 18, 2011 at 3:50 PM, Gregory Farnum wrote: 
> 
> On Friday, March 18, 2011 at 3:45 PM, Tommi Virtanen wrote: 
> > On Fri, Mar 18, 2011 at 10:23:37PM +0000, Steena Monteiro wrote:
> > > I'm trying to build the Ceph client on Ubuntu 10.04.2 with kernel
> > > 2.6.32-28-generic. make -C install gives:
> > > 
> > > /usr/src/ceph-client-standalone/ceph/super.c:870: error: unknown field ‘mount’
> > > specified in initializer
> > 
> > That changed in ceph-client-standalone.git commit
> > ff8a8d2006dca58f71b5dc5df0c95b8f837a0a4e, which mirrors linux.git
> > commit a7f9fb205a88ab9af675a68fc554cf51dafc8b60, which was a VFS
> > refactoring by Al Viro for Linux 2.6.37-rc1.
> > 
> > You'll need to build an older version of ceph-client-standalone, or
> > perhaps try reverting that one commit (git revert ff8a8d). Good luck.
> 
> FYI: ceph-client-standalone is supposed to build on older kernels, although it's only loosely maintained. Let us know how it goes -- if it doesn't work we'll put at least a few developer hours into it!
> -Greg
>  Correction: The backports branch of ceph-client-standalone is supposed to build on older kernels. Have you tried that one? 
-Greg



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Re: Building the Ceph client on Lucid Lynx

[Sage Weil]

[-- Attachment #1: Type: TEXT/PLAIN, Size: 1481 bytes --]

On Fri, 18 Mar 2011, Gregory Farnum wrote:
> On Friday, March 18, 2011 at 3:50 PM, Gregory Farnum wrote: 
> > 
> > On Friday, March 18, 2011 at 3:45 PM, Tommi Virtanen wrote: 
> > > On Fri, Mar 18, 2011 at 10:23:37PM +0000, Steena Monteiro wrote:
> > > > I'm trying to build the Ceph client on Ubuntu 10.04.2 with kernel
> > > > 2.6.32-28-generic. make -C install gives:
> > > > 
> > > > /usr/src/ceph-client-standalone/ceph/super.c:870: error: unknown field ÿÿmountÿÿ
> > > > specified in initializer
> > > 
> > > That changed in ceph-client-standalone.git commit
> > > ff8a8d2006dca58f71b5dc5df0c95b8f837a0a4e, which mirrors linux.git
> > > commit a7f9fb205a88ab9af675a68fc554cf51dafc8b60, which was a VFS
> > > refactoring by Al Viro for Linux 2.6.37-rc1.
> > > 
> > > You'll need to build an older version of ceph-client-standalone, or
> > > perhaps try reverting that one commit (git revert ff8a8d). Good luck.
> > 
> > FYI: ceph-client-standalone is supposed to build on older kernels, although it's only loosely maintained. Let us know how it goes -- if it doesn't work we'll put at least a few developer hours into it!
> > -Greg
> Correction: The backports branch of ceph-client-standalone is supposed to build on older kernels. Have you tried that one? 
> -Greg

I think the problem is that particular change hasn't been backported yet. 
The most recent backport fixes have been done by Henry.  I'm not sure if 
they've done this one too?

sage

Re: Building the Ceph client on Lucid Lynx

[Henry Chang]

> I think the problem is that particular change hasn't been backported yet.
> The most recent backport fixes have been done by Henry.  I'm not sure if
> they've done this one too?

No, we worked around it by reverting the following two commits (which
leverage the new workqueue mechanism of latest kernel):

c59cb6f net/ceph: make ceph_msgr_wq non-reentrant
6b40e7f ceph: fsc->*_wq's aren't used in memory reclaim path

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Henry
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Re: Building the Ceph client on Lucid Lynx

[Steena Monteiro]

Thanks!

I reverted the commits (master~10 and master~11). The filesystem's now mounted.

~Steena


On Mar 21, 2011, at 1:58 AM, Henry Chang wrote:

>> I think the problem is that particular change hasn't been backported yet.
>> The most recent backport fixes have been done by Henry.  I'm not sure if
>> they've done this one too?
> 
> No, we worked around it by reverting the following two commits (which
> leverage the new workqueue mechanism of latest kernel):
> 
> c59cb6f net/ceph: make ceph_msgr_wq non-reentrant
> 6b40e7f ceph: fsc->*_wq's aren't used in memory reclaim path
> 
> -- 
> Henry

Steena D. Monteiro
http://www.steenamonteiro.com