[Cluster-devel] kernel for building master

[David Teigland <teigland@redhat.com>]

On Fri, Apr 11, 2008 at 04:29:52PM -0000, teigland at sourceware.org wrote:
> - Log -----------------------------------------------------------------
> commit 77bce77b5034adf8f00090b13dde7c7d481b0dd9
> Author: David Teigland <teigland@redhat.com>
> Date:   Wed Mar 19 16:05:20 2008 -0500
> 
>     dlm_controld: new version
>     
>     - uses libcpg directly without libgroup (use the -g0 option)
>     - takes over plock handling from gfs_controld
>     - interacts with fenced and fs_controld to coordinate recovery (todo)
>     - runs in backward compat mode by default, using libgroup to interact
>       with old groupd/dlm_controld (-g1 option)
>     - plan to add a new default -g2 option that will detect old groupd's in
>       the cluster and only run in old mode if any exist
>     
>     Signed-off-by: David Teigland <teigland@redhat.com>
> 
> -----------------------------------------------------------------------

This commit assumes dlm kernel changes that are only available in
linux-next or linux-mm (linux/dlm_plock.h).  This goes against our aim to
keep master building against -rc kernels by default, so the following
patch disables the relevant part for now.  Fabio has said he may turn this
ifdef into something more sophisticated.


diff --git a/group/dlm_controld/main.c b/group/dlm_controld/main.c
index b954f53..25c0796 100644
--- a/group/dlm_controld/main.c
+++ b/group/dlm_controld/main.c
@@ -546,11 +546,13 @@ static int loop(void)
 			setup_deadlock();
 		}
 
+#ifdef BUILD_PLOCK
 		rv = setup_plocks();
 		if (rv < 0)
 			goto out;
 		plock_fd = rv;
 		plock_ci = client_add(rv, process_plocks, NULL);
+#endif BUILD_PLOCK
 	}
 
 	for (;;) {
diff --git a/group/dlm_controld/plock.c b/group/dlm_controld/plock.c
index 4dc38ac..5492cc1 100644
--- a/group/dlm_controld/plock.c
+++ b/group/dlm_controld/plock.c
@@ -12,6 +12,8 @@
 
 #include "dlm_daemon.h"
 #include "config.h"
+
+#ifdef BUILD_PLOCK
 #include <linux/dlm_plock.h>
 
 #define PROC_MISC               "/proc/misc"
@@ -2293,3 +2295,21 @@ int dump_plocks(char *name, int fd)
 	return 0;
 }
 
+#else
+
+int setup_plocks(void) { return 0 };
+void process_plocks(int ci) { };
+int limit_plocks(void) { return 0; };
+void receive_plock(struct lockspace *ls, struct dlm_header *hd, int len) { };
+void receive_own(struct lockspace *ls, struct dlm_header *hd, int len) { };
+void receive_sync(struct lockspace *ls, struct dlm_header *hd, int len) { };
+void receive_drop(struct lockspace *ls, struct dlm_header *hd, int len) { };
+void process_saved_plocks(struct lockspace *ls) { };
+void close_plock_checkpoint(struct lockspace *ls) { };
+void store_plocks(struct lockspace *ls) { };
+void retrieve_plocks(struct lockspace *ls) { };
+void purge_plocks(struct lockspace *ls, int nodeid, int unmount) { };
+int dump_plocks(char *name, int fd) { return 0 };
+
+#endif
+