thebestvibedev/tromcho.net
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implement PG epochs to prevent the "version split"

Browse Source 
The "version split" is when:
- A block is written to 1 OSD out of 3, all of them die
- OSDs 2 and 3 come up, the same block is written to both of them
- The remaining OSD comes up. Now all 3 OSDs have the same version of the same object,
  but with different data.
This commit is contained in:
Vitaliy Filippov
2020-07-04 00:55:27 +03:00
parent e680d6c1c3
commit a7929931eb
9 changed files with 126 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files
osd.h
+3 -2
View File
@@ -127,7 +127,8 @@ class osd_t
// cluster connection
void parse_config(blockstore_config_t & config);
void init_cluster();
void on_change_osd_state_hook(uint64_t osd_num);
void on_change_osd_state_hook(osd_num_t peer_osd);
void on_change_pg_history_hook(pg_num_t pg_num);
void on_change_etcd_state_hook(json11::Json::object & changes);
void on_load_config_hook(json11::Json::object & changes);
json11::Json on_load_pgs_checks_hook();
@@ -194,7 +195,7 @@ class osd_t
void handle_primary_bs_subop(osd_op_t *subop);
void add_bs_subop_stats(osd_op_t *subop);
void pg_cancel_write_queue(pg_t & pg, osd_op_t *first_op, object_id oid, int retval);
void submit_primary_subops(int submit_type, int read_pg_size, const uint64_t* osd_set, osd_op_t *cur_op);
void submit_primary_subops(int submit_type, uint64_t op_version, int pg_size, const uint64_t* osd_set, osd_op_t *cur_op);
void submit_primary_del_subops(osd_op_t *cur_op, uint64_t *cur_set, pg_osd_set_t & loc_set);
void submit_primary_sync_subops(osd_op_t *cur_op);
void submit_primary_stab_subops(osd_op_t *cur_op);