From 782e182e91e97f529a1edb30fdece9f1bef90ecc Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Wed, 28 Sep 2011 10:08:27 -0700 Subject: [PATCH] libceph: fix pg_temp mapping calculation We need to apply the modulo pg_num calculation before looking up a pgid in the pg_temp mapping rbtree. This fixes pg_temp mappings, and fixes (some) misdirected requests that result in messages like [WRN] client4104 10.0.1.219:0/275025290 misdirected client4104.1:129 0.1 to osd0 not [1,0] in e11/11 on the server and stall make the client block without getting a reply (at least until the pg_temp mapping goes way, but that can take a long long time). Reorder calc_pg_raw() a bit to make more sense. Signed-off-by: Sage Weil --- net/ceph/osdmap.c | 34 +++++++++++++++++++++------------- 1 file changed, 21 insertions(+), 13 deletions(-) diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c index e97c3588c3ec..eceb8d56703c 100644 --- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -1046,10 +1046,25 @@ static int *calc_pg_raw(struct ceph_osdmap *osdmap, struct ceph_pg pgid, struct ceph_pg_mapping *pg; struct ceph_pg_pool_info *pool; int ruleno; - unsigned poolid, ps, pps; + unsigned poolid, ps, pps, t; int preferred; + poolid = le32_to_cpu(pgid.pool); + ps = le16_to_cpu(pgid.ps); + preferred = (s16)le16_to_cpu(pgid.preferred); + + pool = __lookup_pg_pool(&osdmap->pg_pools, poolid); + if (!pool) + return NULL; + /* pg_temp? */ + if (preferred >= 0) + t = ceph_stable_mod(ps, le32_to_cpu(pool->v.lpg_num), + pool->lpgp_num_mask); + else + t = ceph_stable_mod(ps, le32_to_cpu(pool->v.pg_num), + pool->pgp_num_mask); + pgid.ps = cpu_to_le16(t); pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid); if (pg) { *num = pg->len; @@ -1057,18 +1072,6 @@ static int *calc_pg_raw(struct ceph_osdmap *osdmap, struct ceph_pg pgid, } /* crush */ - poolid = le32_to_cpu(pgid.pool); - ps = le16_to_cpu(pgid.ps); - preferred = (s16)le16_to_cpu(pgid.preferred); - - /* don't forcefeed bad device ids to crush */ - if (preferred >= osdmap->max_osd || - preferred >= osdmap->crush->max_devices) - preferred = -1; - - pool = __lookup_pg_pool(&osdmap->pg_pools, poolid); - if (!pool) - return NULL; ruleno = crush_find_rule(osdmap->crush, pool->v.crush_ruleset, pool->v.type, pool->v.size); if (ruleno < 0) { @@ -1078,6 +1081,11 @@ static int *calc_pg_raw(struct ceph_osdmap *osdmap, struct ceph_pg pgid, return NULL; } + /* don't forcefeed bad device ids to crush */ + if (preferred >= osdmap->max_osd || + preferred >= osdmap->crush->max_devices) + preferred = -1; + if (preferred >= 0) pps = ceph_stable_mod(ps, le32_to_cpu(pool->v.lpgp_num), -- 2.20.1