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libceph: primary_affinity infrastructure

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Add primary_affinity infrastructure.  primary_affinity values are
stored in an max_osd-sized array, hanging off ceph_osdmap, similar to
a osd_weight array.

Introduce {get,set}_primary_affinity() helpers, primarily to return
CEPH_OSD_DEFAULT_PRIMARY_AFFINITY when no affinity has been set and to
abstract out osd_primary_affinity array allocation and initialization.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Ilya Dryomov 2014-03-21 19:05:30 +02:00 • committed by Sage Weil
parent d286de796a
commit 2cfa34f2d6
4 changed files with 57 additions and 2 deletions
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4
include/linux/ceph/rados.h
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@ -133,6 +133,10 @@ extern const char *ceph_osd_state_name(int s);
#define CEPH_OSD_IN 0x10000
#define CEPH_OSD_OUT 0
/* osd primary-affinity. fixed point value: 0x10000 == baseline */
#define CEPH_OSD_MAX_PRIMARY_AFFINITY 0x10000
#define CEPH_OSD_DEFAULT_PRIMARY_AFFINITY 0x10000
/*
* osd map flag bits