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libceph: primary_temp infrastructure

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Add primary_temp mappings infrastructure.  struct ceph_pg_mapping is
overloaded, primary_temp mappings are stored in an rb-tree, rooted at
ceph_osdmap, in a manner similar to pg_temp mappings.

Dump primary_temp mappings to /sys/kernel/debug/ceph/<client>/osdmap,
one 'primary_temp <pgid> <osd>' per line, e.g:

    primary_temp 2.6 4

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 19:05:29 +02:00 • committed by Sage Weil
parent 35a935d75d
commit 9686f94c8c
3 changed files with 21 additions and 1 deletions
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5
include/linux/ceph/osdmap.h
View file

@ -66,6 +66,9 @@ struct ceph_pg_mapping {
int len;
int osds[];
} pg_temp;
struct {
int osd;
} primary_temp;
};
};
@ -83,6 +86,8 @@ struct ceph_osdmap {
struct ceph_entity_addr *osd_addr;
struct rb_root pg_temp;
struct rb_root primary_temp;
struct rb_root pg_pools;
u32 pool_max;