From 546f04ef716dd49521774653d8b032a7d64c05d9 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Mon, 30 Jul 2012 18:15:23 -0700 Subject: libceph: support crush tunables The server side recently added support for tuning some magic crush variables. Decode these variables if they are present, or use the default values if they are not present. Corresponds to ceph.git commit 89af369c25f274fe62ef730e5e8aad0c54f1e5a5. Signed-off-by: caleb miles Reviewed-by: Sage Weil Reviewed-by: Alex Elder Reviewed-by: Yehuda Sadeh --- include/linux/crush/crush.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux/crush') diff --git a/include/linux/crush/crush.h b/include/linux/crush/crush.h index 7c4750811b96..25baa287cff7 100644 --- a/include/linux/crush/crush.h +++ b/include/linux/crush/crush.h @@ -154,6 +154,14 @@ struct crush_map { __s32 max_buckets; __u32 max_rules; __s32 max_devices; + + /* choose local retries before re-descent */ + __u32 choose_local_tries; + /* choose local attempts using a fallback permutation before + * re-descent */ + __u32 choose_local_fallback_tries; + /* choose attempts before giving up */ + __u32 choose_total_tries; }; -- cgit v1.2.3