From 757a42719635495779462514458bbfbf12a37dac Mon Sep 17 00:00:00 2001 From: David Teigland Date: Thu, 20 Oct 2011 13:26:28 -0500 Subject: dlm: add node slots and generation Slot numbers are assigned to nodes when they join the lockspace. The slot number chosen is the minimum unused value starting at 1. Once a node is assigned a slot, that slot number will not change while the node remains a lockspace member. If the node leaves and rejoins it can be assigned a new slot number. A new generation number is also added to a lockspace. It is set and incremented during each recovery along with the slot collection/assignment. The slot numbers will be passed to gfs2 which will use them as journal id's. Signed-off-by: David Teigland --- fs/dlm/member.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'fs/dlm/member.h') diff --git a/fs/dlm/member.h b/fs/dlm/member.h index 7a26fca1e0b5..7e87e8a79dfd 100644 --- a/fs/dlm/member.h +++ b/fs/dlm/member.h @@ -20,6 +20,13 @@ void dlm_clear_members_gone(struct dlm_ls *ls); int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv,int *neg_out); int dlm_is_removed(struct dlm_ls *ls, int nodeid); int dlm_is_member(struct dlm_ls *ls, int nodeid); +int dlm_slots_version(struct dlm_header *h); +void dlm_slot_save(struct dlm_ls *ls, struct dlm_rcom *rc, + struct dlm_member *memb); +void dlm_slots_copy_out(struct dlm_ls *ls, struct dlm_rcom *rc); +int dlm_slots_copy_in(struct dlm_ls *ls); +int dlm_slots_assign(struct dlm_ls *ls, int *num_slots, int *slots_size, + struct dlm_slot **slots_out, uint32_t *gen_out); #endif /* __MEMBER_DOT_H__ */ -- cgit v1.2.3