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authorSage Weil <sage@newdream.net>2009-11-20 02:31:50 +0300
committerSage Weil <sage@newdream.net>2009-11-21 01:24:33 +0300
commit94045e115ee72aee3b17295791da07078f2f778c (patch)
treebc38f3425b15995709ee4f698246b2febffff515
parent0743304d871559cb4c7c066357de2caa60e94c2f (diff)
downloadlinux-94045e115ee72aee3b17295791da07078f2f778c.tar.xz
ceph: decode updated mdsmap format
The mds map now uses the global_id as the 'key' (instead of the addr, which was a poor choice). This is protocol change. Signed-off-by: Sage Weil <sage@newdream.net>
-rw-r--r--fs/ceph/ceph_fs.h2
-rw-r--r--fs/ceph/mdsmap.c15
-rw-r--r--fs/ceph/mdsmap.h1
3 files changed, 11 insertions, 7 deletions
diff --git a/fs/ceph/ceph_fs.h b/fs/ceph/ceph_fs.h
index 1e96a9a87d8d..4e5f49c738d8 100644
--- a/fs/ceph/ceph_fs.h
+++ b/fs/ceph/ceph_fs.h
@@ -39,7 +39,7 @@
#define CEPH_MDS_PROTOCOL 9 /* cluster internal */
#define CEPH_MON_PROTOCOL 5 /* cluster internal */
#define CEPH_OSDC_PROTOCOL 22 /* server/client */
-#define CEPH_MDSC_PROTOCOL 29 /* server/client */
+#define CEPH_MDSC_PROTOCOL 30 /* server/client */
#define CEPH_MONC_PROTOCOL 15 /* server/client */
diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index 4226c810ce22..cad8d25861e5 100644
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -76,6 +76,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
/* pick out active nodes from mds_info (state > 0) */
n = ceph_decode_32(p);
for (i = 0; i < n; i++) {
+ u64 global_id;
u32 namelen;
s32 mds, inc, state;
u64 state_seq;
@@ -84,10 +85,10 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
u32 num_export_targets;
void *pexport_targets = NULL;
- ceph_decode_need(p, end, sizeof(addr) + 1 + sizeof(u32), bad);
- ceph_decode_copy(p, &addr, sizeof(addr));
- ceph_decode_addr(&addr);
+ ceph_decode_need(p, end, sizeof(u64)*2 + 1 + sizeof(u32), bad);
+ global_id = ceph_decode_64(p);
infoversion = ceph_decode_8(p);
+ *p += sizeof(u64);
namelen = ceph_decode_32(p); /* skip mds name */
*p += namelen;
@@ -99,7 +100,8 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
inc = ceph_decode_32(p);
state = ceph_decode_32(p);
state_seq = ceph_decode_64(p);
- *p += sizeof(addr);
+ ceph_decode_copy(p, &addr, sizeof(addr));
+ ceph_decode_addr(&addr);
*p += sizeof(struct ceph_timespec);
*p += sizeof(u32);
ceph_decode_32_safe(p, end, namelen, bad);
@@ -112,10 +114,11 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
num_export_targets = 0;
}
- dout("mdsmap_decode %d/%d mds%d.%d %s %s\n",
- i+1, n, mds, inc, pr_addr(&addr.in_addr),
+ dout("mdsmap_decode %d/%d %lld mds%d.%d %s %s\n",
+ i+1, n, global_id, mds, inc, pr_addr(&addr.in_addr),
ceph_mds_state_name(state));
if (mds >= 0 && mds < m->m_max_mds && state > 0) {
+ m->m_info[mds].global_id = global_id;
m->m_info[mds].state = state;
m->m_info[mds].addr = addr;
m->m_info[mds].num_export_targets = num_export_targets;
diff --git a/fs/ceph/mdsmap.h b/fs/ceph/mdsmap.h
index d317308648fb..eacc131aa5cb 100644
--- a/fs/ceph/mdsmap.h
+++ b/fs/ceph/mdsmap.h
@@ -9,6 +9,7 @@
* we limit fields to those the client actually xcares about
*/
struct ceph_mds_info {
+ u64 global_id;
struct ceph_entity_addr addr;
s32 state;
int num_export_targets;