From: Jason Dillaman <dillaman@redhat.com>
Date: Fri, 21 Aug 2015 15:32:39 +0000 (-0400)
Subject: Objecter: pg_interval_t::is_new_interval needs pgid from previous pool
X-Git-Tag: v0.94.4~82^2
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=bee86660377cfaa74f7ed668dd02492f25553ff9;p=ceph.git

Objecter: pg_interval_t::is_new_interval needs pgid from previous pool

When increasing the pg_num of a pool, an assert would fail since the
calculated pgid seed would be for the pool's new pg_num value instead
of the previous pg_num value.

Fixes: #10399
Backport: infernalis, hammer, firefly
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit f20f7a23e913d09cc7fc22fb3df07f9938ddc144)

Conflicts: (hobject_t sort order not backported, trivial resolution)
	src/osdc/Objecter.cc
	src/osdc/Objecter.h
---

diff --git a/src/osdc/Objecter.cc b/src/osdc/Objecter.cc
index eb0c24b0c4230..856425af9553a 100644
--- a/src/osdc/Objecter.cc
+++ b/src/osdc/Objecter.cc
@@ -2435,6 +2435,7 @@ int Objecter::_calc_target(op_target_t *t, epoch_t *last_force_resend,  bool any
   vector<int> up, acting;
   osdmap->pg_to_up_acting_osds(pgid, &up, &up_primary,
 			       &acting, &acting_primary);
+  unsigned prev_seed = ceph_stable_mod(pgid.ps(), t->pg_num, t->pg_num_mask);
   if (any_change && pg_interval_t::is_new_interval(
           t->acting_primary,
 	  acting_primary,
@@ -2450,7 +2451,7 @@ int Objecter::_calc_target(op_target_t *t, epoch_t *last_force_resend,  bool any
 	  min_size,
 	  t->pg_num,
 	  pg_num,
-	  pi->raw_pg_to_pg(pgid))) {
+	  pg_t(prev_seed, pgid.pool(), pgid.preferred()))) {
     force_resend = true;
   }
 
@@ -2475,6 +2476,7 @@ int Objecter::_calc_target(op_target_t *t, epoch_t *last_force_resend,  bool any
     t->size = size;
     t->min_size = min_size;
     t->pg_num = pg_num;
+    t->pg_num_mask = pi->get_pg_num_mask();
     ldout(cct, 10) << __func__ << " "
 		   << " pgid " << pgid << " acting " << acting << dendl;
     t->used_replica = false;
diff --git a/src/osdc/Objecter.h b/src/osdc/Objecter.h
index 08bfcfce2f652..0aac5e95a4e8d 100644
--- a/src/osdc/Objecter.h
+++ b/src/osdc/Objecter.h
@@ -1113,17 +1113,18 @@ public:
     object_t target_oid;
     object_locator_t target_oloc;
 
-    bool precalc_pgid;   ///< true if we are directed at base_pgid, not base_oid
-    pg_t base_pgid;      ///< explciti pg target, if any
-
-    pg_t pgid;           ///< last pg we mapped to
-    unsigned pg_num;     ///< last pg_num we mapped to
-    vector<int> up;      ///< set of up osds for last pg we mapped to
-    vector<int> acting;  ///< set of acting osds for last pg we mapped to
-    int up_primary;      ///< primary for last pg we mapped to based on the up set
-    int acting_primary;  ///< primary for last pg we mapped to based on the acting set
-    int size;        ///< the size of the pool when were were last mapped
-    int min_size;        ///< the min size of the pool when were were last mapped
+    bool precalc_pgid;    ///< true if we are directed at base_pgid, not base_oid
+    pg_t base_pgid;       ///< explciti pg target, if any
+
+    pg_t pgid;            ///< last pg we mapped to
+    unsigned pg_num;      ///< last pg_num we mapped to
+    unsigned pg_num_mask; ///< last pg_num_mask we mapped to
+    vector<int> up;       ///< set of up osds for last pg we mapped to
+    vector<int> acting;   ///< set of acting osds for last pg we mapped to
+    int up_primary;       ///< primary for last pg we mapped to based on the up set
+    int acting_primary;   ///< primary for last pg we mapped to based on the acting set
+    int size;             ///< the size of the pool when were were last mapped
+    int min_size;         ///< the min size of the pool when were were last mapped
 
     bool used_replica;
     bool paused;
@@ -1136,6 +1137,7 @@ public:
 	base_oloc(oloc),
 	precalc_pgid(false),
 	pg_num(0),
+        pg_num_mask(0),
 	up_primary(-1),
 	acting_primary(-1),
 	size(-1),