[Gluster-devel] [PATCH v7] vfs_glusterfs: Samba VFS module for glusterfs

[Anand Avati]

On Tue, May 28, 2013 at 2:46 PM, Andrew Bartlett <abartlet at samba.org> wrote:

> On Tue, 2013-05-28 at 17:36 -0400, Anand Avati wrote:
> > Implement a Samba VFS plugin for glusterfs based on gluster's gfapi.
> > This is a "bottom" vfs plugin (not something to be stacked on top of
> > another module), and translates (most) calls into closest actions
> > on gfapi.
>
> Thank you for your patience here.
>
> > Signed-off-by: Anand Avati <avati at redhat.com>
> > ---
> >
> > Hi,
> >
> > I hope the waf changes are fine. I could not test them because builds
> were failing generally on samba.git master HEAD.
>
> You need to resolve whatever is causing your problems here, as it is not
> a general issue. Our autobuild system ensures that git master and
> v4-0-test always compile and test in at least Ubuntu 10.04, and it is
> incredibly rare that it not work on at least Linux without it being a
> specifically local issue.
>
> +
> +bld.SAMBA3_MODULE('vfs_glusterfs',
> +                  subsystem='vfs',
> +                  source=VFS_GLUSTERFS_SRC,
> +                  deps='samba-util',
> +                  init_function='',
> +
>  internal_module=bld.SAMBA3_IS_STATIC_MODULE('vfs_glusterfs'),
> +                  enabled=bld.SAMBA3_IS_ENABLED_MODULE('vfs_glusterfs'))
>
> You should ensure your module depends on glusterfs, by changing that to
> adding deps='glusterfs samba-util' (and making that match what the
> conf.check_cfg finds and stores).


I tried that. I added uselib_store='glusterfs' and included 'glusterfs' in
deps= line. However while building I get this error:

[avati at blackbox samba]$ make
WAF_MAKE=1 python ./buildtools/bin/waf build
./buildtools/wafsamba/samba_utils.py:397: DeprecationWarning: the md5
module is deprecated; use hashlib instead
  import md5
Waf: Entering directory `/home/avati/work/samba/bin'
Selected embedded Heimdal build
Checking project rules ...
Unknown dependency 'glusterfs' in 'vfs_glusterfs'
make: *** [all] Error 1


I am not familiar with waf, and trying to figure out how it works. I don't
understand how the check_cfg() in wscript and source3/wscript_build's
bld.SAMBA3_MODULE() actually integrate internally.


> > diff --git a/source3/wscript b/source3/wscript
> > index dba6cdc..0d07692 100644
> > --- a/source3/wscript
> > +++ b/source3/wscript
> > @@ -59,6 +59,11 @@ def set_options(opt):
> >                     help=("Directory under which libcephfs is
> installed"),
> >                     action="store", dest='libcephfs_dir', default=None)
> >
> > +    opt.add_option('--enable-glusterfs',
> > +                   help=("Enable building vfs_glusterfs module"),
> > +                   action="store_true", dest='enable_glusterfs',
> default=True)
> > +    opt.add_option('--disable-glusterfs', help=SUPPRESS_HELP,
> > +                   action="store_false", dest='enable_glusterfs')
>
> In general we would prefer not to have options for every possible
> module.  Instead, please just make it automatic based on finding
> glusterfs.


OK, I will just leave things to check_cfg() detection then?


> >  def configure(conf):
> > @@ -1709,6 +1714,13 @@ main() {
> >      if conf.CHECK_HEADERS('cephfs/libcephfs.h', False, False, 'cephfs')
> and conf.CHECK_LIB('cephfs'):
> >          conf.DEFINE('HAVE_CEPH', '1')
> >
> > +    conf.env.enable_glusterfs = Options.options.enable_glusterfs
> > +
> > +    if Options.options.enable_glusterfs:
> > +        conf.check_cfg(package='glusterfs-api', args='"glusterfs-api >=
> 4" --cflags --libs',
> > +                       uselib_store='GLUSTERFS', msg='Checking for
> glusterfs-api >= 4',
> > +                       mandatory=False)
> > +
> >      conf.env.build_regedit = False
> >      if not Options.options.with_regedit == False:
> >          conf.PROCESS_SEPARATE_RULE('system_ncurses')
> > @@ -1797,6 +1809,9 @@ main() {
> >      if conf.CONFIG_SET("HAVE_CEPH"):
> >          default_shared_modules.extend(TO_LIST('vfs_ceph'))
> >
> > +    if conf.CONFIG_SET('HAVE_GLUSTERFS'):
> > +        default_shared_modules.extend(TO_LIST('vfs_glusterfs'))
> > +
> >      explicit_shared_modules = TO_LIST(Options.options.shared_modules,
> delimiter=',')
> >      explicit_static_modules = TO_LIST(Options.options.static_modules,
> delimiter=',')
>
> This much looks good, assuming it is tested and works.   You might need
> to make uselib_store='glusterfs' (not sure).


As mentioned above, I tried this but still get the dependency error. Not
sure what I am missing..

Avati
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