From ee7fdfaff7702bd209e3a013b2fc4643233f5465 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Mon, 19 Oct 2009 11:41:51 -0700 Subject: ceph: include preferred osd in placement seed Mix the preferred osd (if any) into the placement seed that is fed into the CRUSH object placement calculation. This prevents all the placement pgs from peering with the same osds. Rev the osd client protocol with this change. Signed-off-by: Sage Weil --- fs/ceph/osdmap.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/ceph/osdmap.c') diff --git a/fs/ceph/osdmap.c b/fs/ceph/osdmap.c index 6f0aeff4185..72d75a239ac 100644 --- a/fs/ceph/osdmap.c +++ b/fs/ceph/osdmap.c @@ -791,6 +791,8 @@ int ceph_calc_object_layout(struct ceph_object_layout *ol, pgid.pg64 = 0; /* start with it zeroed out */ pgid.pg.ps = ceph_full_name_hash(oid, strlen(oid)); pgid.pg.preferred = preferred; + if (preferred >= 0) + pgid.pg.ps += preferred; pgid.pg.pool = le32_to_cpu(fl->fl_pg_pool); if (preferred >= 0) dout("calc_object_layout '%s' pgid %d.%xp%d (%llx)\n", oid, -- cgit v1.2.3