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authorIlya Dryomov <ilya.dryomov@inktank.com>2014-01-27 17:40:19 +0200
committerIlya Dryomov <ilya.dryomov@inktank.com>2014-01-27 23:57:45 +0200
commit17a13e4028e6ad7ded079cf32370c47bd0e0fc07 (patch)
treeb09232ed5e1037f4ff9cfd3c60902dd0c0d61973 /net
parentce7f6a2790464047199f54b66420243d433142bd (diff)
downloadlinux-stericsson-17a13e4028e6ad7ded079cf32370c47bd0e0fc07.tar.gz
libceph: follow {read,write}_tier fields on osd request submission
Overwrite ceph_osd_request::r_oloc.pool with read_tier for read ops and write_tier for write and read+write ops (aka basic tiering support). {read,write}_tier are part of pg_pool_t since v9. This commit bumps our pg_pool_t decode compat version from v7 to v9, all new fields except for {read,write}_tier are ignored. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'net')
-rw-r--r--net/ceph/osd_client.c30
-rw-r--r--net/ceph/osdmap.c28
2 files changed, 53 insertions, 5 deletions
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 10360dedcdad..0eb009eaf4ff 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -1250,6 +1250,32 @@ static bool __req_should_be_paused(struct ceph_osd_client *osdc,
}
/*
+ * Calculate mapping of a request to a PG. Takes tiering into account.
+ */
+static int __calc_request_pg(struct ceph_osdmap *osdmap,
+ struct ceph_osd_request *req,
+ struct ceph_pg *pg_out)
+{
+ if ((req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) {
+ struct ceph_pg_pool_info *pi;
+
+ pi = ceph_pg_pool_by_id(osdmap, req->r_oloc.pool);
+ if (pi) {
+ if ((req->r_flags & CEPH_OSD_FLAG_READ) &&
+ pi->read_tier >= 0)
+ req->r_oloc.pool = pi->read_tier;
+ if ((req->r_flags & CEPH_OSD_FLAG_WRITE) &&
+ pi->write_tier >= 0)
+ req->r_oloc.pool = pi->write_tier;
+ }
+ /* !pi is caught in ceph_oloc_oid_to_pg() */
+ }
+
+ return ceph_oloc_oid_to_pg(osdmap, &req->r_oloc,
+ &req->r_oid, pg_out);
+}
+
+/*
* Pick an osd (the first 'up' osd in the pg), allocate the osd struct
* (as needed), and set the request r_osd appropriately. If there is
* no up osd, set r_osd to NULL. Move the request to the appropriate list
@@ -1269,8 +1295,8 @@ static int __map_request(struct ceph_osd_client *osdc,
bool was_paused;
dout("map_request %p tid %lld\n", req, req->r_tid);
- err = ceph_oloc_oid_to_pg(osdc->osdmap, &req->r_oloc, &req->r_oid,
- &pgid);
+
+ err = __calc_request_pg(osdc->osdmap, req, &pgid);
if (err) {
list_move(&req->r_req_lru_item, &osdc->req_notarget);
return err;
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index d69d23556f0c..aade4a5c1c07 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -519,8 +519,8 @@ static int __decode_pool(void **p, void *end, struct ceph_pg_pool_info *pi)
pr_warning("got v %d < 5 cv %d of ceph_pg_pool\n", ev, cv);
return -EINVAL;
}
- if (cv > 7) {
- pr_warning("got v %d cv %d > 7 of ceph_pg_pool\n", ev, cv);
+ if (cv > 9) {
+ pr_warning("got v %d cv %d > 9 of ceph_pg_pool\n", ev, cv);
return -EINVAL;
}
len = ceph_decode_32(p);
@@ -548,12 +548,34 @@ static int __decode_pool(void **p, void *end, struct ceph_pg_pool_info *pi)
*p += len;
}
- /* skip removed snaps */
+ /* skip removed_snaps */
num = ceph_decode_32(p);
*p += num * (8 + 8);
*p += 8; /* skip auid */
pi->flags = ceph_decode_64(p);
+ *p += 4; /* skip crash_replay_interval */
+
+ if (ev >= 7)
+ *p += 1; /* skip min_size */
+
+ if (ev >= 8)
+ *p += 8 + 8; /* skip quota_max_* */
+
+ if (ev >= 9) {
+ /* skip tiers */
+ num = ceph_decode_32(p);
+ *p += num * 8;
+
+ *p += 8; /* skip tier_of */
+ *p += 1; /* skip cache_mode */
+
+ pi->read_tier = ceph_decode_64(p);
+ pi->write_tier = ceph_decode_64(p);
+ } else {
+ pi->read_tier = -1;
+ pi->write_tier = -1;
+ }
/* ignore the rest */