[Cluster-devel] [PATCH][GFS2] Given device ID rather than s_id in "id" sysfs file

[Bob Peterson]

Hi,

This patch changes the /sys/fs/gfs2/<s_id>/id file to give the device
id "major:minor" rather than the s_id.  That enables gfs2_tool to
match devices properly (by id, not name) when locating the tuning files.

Regards,

Bob Peterson
--
Signed-off-by: Bob Peterson <rpeterso at redhat.com>
--
 fs/gfs2/sys.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 06e0b77..10807b7 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -32,7 +32,8 @@ spinlock_t gfs2_sys_margs_lock;
 
 static ssize_t id_show(struct gfs2_sbd *sdp, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_vfs->s_id);
+	return snprintf(buf, PAGE_SIZE, "%u:%u\n",
+			MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev));
 }
 
 static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf)