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-rw-r--r--xlators/mgmt/glusterd/src/glusterd.h244
1 files changed, 207 insertions, 37 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd.h b/xlators/mgmt/glusterd/src/glusterd.h
index 3d810ed..79461fb 100644
--- a/xlators/mgmt/glusterd/src/glusterd.h
+++ b/xlators/mgmt/glusterd/src/glusterd.h
@@ -53,6 +53,9 @@
"S56glusterd-geo-rep-create-post.sh"
+#define GLUSTERD_SNAPS_MAX_HARD_LIMIT 256
+#define GLUSTERD_SNAPS_DEF_SOFT_LIMIT_PERCENT 90
+#define GLUSTERD_SNAPS_MAX_SOFT_LIMIT_PERCENT 100
#define GLUSTERD_SERVER_QUORUM "server"
#define FMTSTR_CHECK_VOL_EXISTS "Volume %s does not exist"
@@ -73,6 +76,9 @@
struct glusterd_volinfo_;
typedef struct glusterd_volinfo_ glusterd_volinfo_t;
+struct glusterd_snap_;
+typedef struct glusterd_snap_ glusterd_snap_t;
+
typedef enum glusterd_op_ {
GD_OP_NONE = 0,
GD_OP_CREATE_VOLUME,
@@ -102,6 +108,7 @@ typedef enum glusterd_op_ {
GD_OP_COPY_FILE,
GD_OP_SYS_EXEC,
GD_OP_GSYNC_CREATE,
+ GD_OP_SNAP,
GD_OP_MAX,
} glusterd_op_t;
@@ -137,13 +144,15 @@ typedef struct {
nodesrv_t *quotad;
struct pmap_registry *pmap;
struct list_head volumes;
+ struct list_head snapshots; /*List of snap volumes */
pthread_mutex_t xprt_lock;
struct list_head xprt_list;
gf_store_handle_t *handle;
gf_timer_t *timer;
glusterd_sm_tr_log_t op_sm_log;
struct rpc_clnt_program *gfs_mgmt;
- dict_t *vol_lock; /* Dict for saving vol locks */
+ dict_t *mgmt_v3_lock; /* Dict for saving
+ * mgmt_v3 locks */
dict_t *glusterd_txn_opinfo; /* Dict for saving
* transaction opinfos */
uuid_t global_txn_id; /* To be used in
@@ -151,21 +160,26 @@ typedef struct {
* cluster with no
* transaction ids */
- struct list_head mount_specs;
- gf_boolean_t valgrind;
- pthread_t brick_thread;
- void *hooks_priv;
+ struct list_head mount_specs;
+ gf_boolean_t valgrind;
+ pthread_t brick_thread;
+ void *hooks_priv;
/* need for proper handshake_t */
- int op_version; /* Starts with 1 for 3.3.0 */
- xlator_t *xl; /* Should be set to 'THIS' before creating thread */
- gf_boolean_t pending_quorum_action;
- dict_t *opts;
- synclock_t big_lock;
- gf_boolean_t restart_done;
- rpcsvc_t *uds_rpc; /* RPCSVC for the unix domain socket */
- uint32_t base_port;
- pid_t etcd_pid;
+ int op_version; /* Starts with 1 for 3.3.0 */
+ xlator_t *xl; /* Should be set to 'THIS' before creating thread */
+ gf_boolean_t pending_quorum_action;
+ dict_t *opts;
+ synclock_t big_lock;
+ gf_boolean_t restart_done;
+ rpcsvc_t *uds_rpc; /* RPCSVC for the unix domain socket */
+ uint32_t base_port;
+ uint64_t snap_max_hard_limit;
+ uint64_t snap_max_soft_limit;
+ char *snap_bricks_directory;
+ gf_store_handle_t *missed_snaps_list_shandle;
+ struct list_head missed_snaps_list;
+ pid_t etcd_pid;
} glusterd_conf_t;
@@ -177,6 +191,7 @@ typedef enum gf_brick_status {
struct glusterd_brickinfo {
char hostname[1024];
char path[PATH_MAX];
+ char device_path[PATH_MAX];
char brick_id[1024];/*Client xlator name, AFR changelog name*/
struct list_head brick_list;
uuid_t uuid;
@@ -190,6 +205,7 @@ struct glusterd_brickinfo {
int decommissioned;
char vg[PATH_MAX]; /* FIXME: Use max size for length of vg */
int caps; /* Capability */
+ int32_t snap_status;
/*
* The group is used to identify which bricks are part of the same
* replica set during brick-volfile generation, so that NSR volfiles
@@ -290,11 +306,36 @@ struct glusterd_replace_brick_ {
typedef struct glusterd_replace_brick_ glusterd_replace_brick_t;
struct glusterd_volinfo_ {
+ gf_lock_t lock;
char volname[GLUSTERD_MAX_VOLUME_NAME];
+ gf_boolean_t is_snap_volume;
+ glusterd_snap_t *snapshot;
+ gf_boolean_t is_volume_restored;
+ char parent_volname[GLUSTERD_MAX_VOLUME_NAME];
+ /* In case of a snap volume
+ i.e (is_snap_volume == TRUE) this
+ field will contain the name of
+ the volume which is snapped. In
+ case of a non-snap volume, this
+ field will be initialized as N/A */
int type;
int brick_count;
+ uint64_t snap_count;
+ uint64_t snap_max_hard_limit;
struct list_head vol_list;
+ /* In case of a snap volume
+ i.e (is_snap_volume == TRUE) this
+ is linked to glusterd_snap_t->volumes.
+ In case of a non-snap volume, this is
+ linked to glusterd_conf_t->volumes */
+ struct list_head snapvol_list;
+ /* This is a current pointer for
+ glusterd_volinfo_t->snap_volumes */
struct list_head bricks;
+ struct list_head snap_volumes;
+ /* TODO : Need to remove this, as this
+ * is already part of snapshot object.
+ */
glusterd_volume_status status;
int sub_count; /* backward compatibility */
int stripe_count;
@@ -303,11 +344,11 @@ struct glusterd_volinfo_ {
distribute volume */
int dist_leaf_count; /* Number of bricks in one
distribute subvolume */
- int port;
- gf_store_handle_t *shandle;
- gf_store_handle_t *rb_shandle;
- gf_store_handle_t *node_state_shandle;
- gf_store_handle_t *quota_conf_shandle;
+ int port;
+ gf_store_handle_t *shandle;
+ gf_store_handle_t *rb_shandle;
+ gf_store_handle_t *node_state_shandle;
+ gf_store_handle_t *quota_conf_shandle;
/* Defrag/rebalance related */
glusterd_rebalance_t rebal;
@@ -315,12 +356,12 @@ struct glusterd_volinfo_ {
/* Replace brick status */
glusterd_replace_brick_t rep_brick;
- int version;
- uint32_t quota_conf_version;
- uint32_t cksum;
- uint32_t quota_conf_cksum;
- gf_transport_type transport_type;
- gf_transport_type nfs_transport_type;
+ int version;
+ uint32_t quota_conf_version;
+ uint32_t cksum;
+ uint32_t quota_conf_cksum;
+ gf_transport_type transport_type;
+ gf_transport_type nfs_transport_type;
dict_t *dict;
@@ -342,6 +383,41 @@ struct glusterd_volinfo_ {
int refcnt;
};
+typedef enum gd_snap_status_ {
+ GD_SNAP_STATUS_NONE,
+ GD_SNAP_STATUS_INIT,
+ GD_SNAP_STATUS_IN_USE,
+ GD_SNAP_STATUS_DECOMMISSION,
+ GD_SNAP_STATUS_RESTORED,
+} gd_snap_status_t;
+
+struct glusterd_snap_ {
+ gf_lock_t lock;
+ struct list_head volumes;
+ struct list_head snap_list;
+ char snapname[GLUSTERD_MAX_SNAP_NAME];
+ uuid_t snap_id;
+ char *description;
+ time_t time_stamp;
+ gf_boolean_t snap_restored;
+ gd_snap_status_t snap_status;
+ gf_store_handle_t *shandle;
+};
+
+typedef struct glusterd_snap_op_ {
+ int32_t brick_num;
+ char *brick_path;
+ int32_t op;
+ int32_t status;
+ struct list_head snap_ops_list;
+} glusterd_snap_op_t;
+
+typedef struct glusterd_missed_snap_ {
+ char *node_snap_info;
+ struct list_head missed_snaps;
+ struct list_head snap_ops;
+} glusterd_missed_snap_info;
+
typedef enum gd_node_type_ {
GD_NODE_NONE,
GD_NODE_BRICK,
@@ -351,6 +427,12 @@ typedef enum gd_node_type_ {
GD_NODE_QUOTAD,
} gd_node_type;
+typedef enum missed_snap_stat {
+ GD_MISSED_SNAP_NONE,
+ GD_MISSED_SNAP_PENDING,
+ GD_MISSED_SNAP_DONE,
+} missed_snap_stat;
+
typedef struct glusterd_pending_node_ {
struct list_head list;
void *node;
@@ -383,12 +465,19 @@ enum glusterd_vol_comp_status_ {
#define GLUSTERD_VOLUME_DIR_PREFIX "vols"
#define GLUSTERD_PEER_DIR_PREFIX "peers"
#define GLUSTERD_VOLUME_INFO_FILE "info"
+#define GLUSTERD_SNAP_INFO_FILE "info"
#define GLUSTERD_VOLUME_RBSTATE_FILE "rbstate"
#define GLUSTERD_BRICK_INFO_DIR "bricks"
#define GLUSTERD_CKSUM_FILE "cksum"
#define GLUSTERD_VOL_QUOTA_CKSUM_FILE "quota.cksum"
#define GLUSTERD_TRASH "trash"
#define GLUSTERD_NODE_STATE_FILE "node_state.info"
+#define GLUSTERD_MISSED_SNAPS_LIST_FILE "missed_snaps_list"
+#define GLUSTERD_VOL_SNAP_DIR_PREFIX "snaps"
+
+#define GLUSTERD_DEFAULT_SNAPS_BRICK_DIR "/gluster/snaps"
+#define GLUSTERD_VAR_RUN_DIR "/var/run"
+#define GLUSTERD_RUN_DIR "/run"
/* definitions related to replace brick */
#define RB_CLIENT_MOUNTPOINT "rb_mount"
@@ -401,14 +490,29 @@ enum glusterd_vol_comp_status_ {
typedef ssize_t (*gd_serialize_t) (struct iovec outmsg, void *args);
-#define GLUSTERD_GET_VOLUME_DIR(path, volinfo, priv) \
- snprintf (path, PATH_MAX, "%s/vols/%s", priv->workdir,\
- volinfo->volname);
+#define GLUSTERD_GET_VOLUME_DIR(path, volinfo, priv) \
+ if (volinfo->is_snap_volume) { \
+ snprintf (path, PATH_MAX, "%s/snaps/%s/%s", priv->workdir, \
+ volinfo->snapshot->snapname, volinfo->volname); \
+ } else { \
+ snprintf (path, PATH_MAX, "%s/vols/%s", priv->workdir, \
+ volinfo->volname); \
+ }
-#define GLUSTERD_GET_BRICK_DIR(path, volinfo, priv) \
- snprintf (path, PATH_MAX, "%s/%s/%s/%s", priv->workdir,\
- GLUSTERD_VOLUME_DIR_PREFIX, volinfo->volname, \
- GLUSTERD_BRICK_INFO_DIR);
+#define GLUSTERD_GET_SNAP_DIR(path, snap, priv) \
+ snprintf (path, PATH_MAX, "%s/snaps/%s", priv->workdir, \
+ snap->snapname);
+
+#define GLUSTERD_GET_BRICK_DIR(path, volinfo, priv) \
+ if (volinfo->is_snap_volume) { \
+ snprintf (path, PATH_MAX, "%s/snaps/%s/%s/%s", priv->workdir, \
+ volinfo->snapshot->snapname, volinfo->volname, \
+ GLUSTERD_BRICK_INFO_DIR); \
+ } else { \
+ snprintf (path, PATH_MAX, "%s/%s/%s/%s", priv->workdir, \
+ GLUSTERD_VOLUME_DIR_PREFIX, volinfo->volname, \
+ GLUSTERD_BRICK_INFO_DIR); \
+ }
#define GLUSTERD_GET_NFS_DIR(path, priv) \
snprintf (path, PATH_MAX, "%s/nfs", priv->workdir);
@@ -435,7 +539,7 @@ typedef ssize_t (*gd_serialize_t) (struct iovec outmsg, void *args);
GLUSTERD_GET_VOLUME_DIR (volpath, volinfo, priv); \
GLUSTERD_REMOVE_SLASH_FROM_PATH (brickinfo->path, exp_path); \
snprintf (pidfile, PATH_MAX, "%s/run/%s-%s.pid", \
- volpath, brickinfo->hostname, exp_path); \
+ volpath, brickinfo->hostname, exp_path); \
} while (0)
#define GLUSTERD_GET_BRICK_RECON_PIDFILE(pidfile,volinfo,brickinfo, priv) do { \
@@ -493,6 +597,20 @@ typedef ssize_t (*gd_serialize_t) (struct iovec outmsg, void *args);
DEFAULT_VAR_RUN_DIRECTORY"/%s.pid", volname); \
}
+#define GLUSTERD_GET_UUID_NOHYPHEN(ret_string, uuid) do { \
+ char *snap_volname_ptr = ret_string; \
+ char *snap_volid_ptr = uuid_utoa(uuid); \
+ while (*snap_volid_ptr) { \
+ if (*snap_volid_ptr == '-') { \
+ snap_volid_ptr++; \
+ } else { \
+ (*snap_volname_ptr++) = \
+ (*snap_volid_ptr++); \
+ } \
+ } \
+ *snap_volname_ptr = '\0'; \
+ } while (0)
+
int glusterd_uuid_init();
int glusterd_uuid_generate_save ();
@@ -554,12 +672,12 @@ int
glusterd_op_unlock_send_resp (rpcsvc_request_t *req, int32_t status);
int
-glusterd_op_volume_lock_send_resp (rpcsvc_request_t *req,
- uuid_t *txn_id, int32_t status);
+glusterd_op_mgmt_v3_lock_send_resp (rpcsvc_request_t *req,
+ uuid_t *txn_id, int32_t status);
int
-glusterd_op_volume_unlock_send_resp (rpcsvc_request_t *req,
- uuid_t *txn_id, int32_t status);
+glusterd_op_mgmt_v3_unlock_send_resp (rpcsvc_request_t *req,
+ uuid_t *txn_id, int32_t status);
int
glusterd_op_stage_send_resp (rpcsvc_request_t *req,
@@ -777,6 +895,9 @@ int glusterd_handle_cli_heal_volume (rpcsvc_request_t *req);
int glusterd_handle_cli_list_volume (rpcsvc_request_t *req);
+int
+glusterd_handle_snapshot (rpcsvc_request_t *req);
+
/* op-sm functions */
int glusterd_op_stage_heal_volume (dict_t *dict, char **op_errstr);
int glusterd_op_heal_volume (dict_t *dict, char **op_errstr);
@@ -829,6 +950,9 @@ int glusterd_op_statedump_volume_args_get (dict_t *dict, char **volname,
int glusterd_op_gsync_args_get (dict_t *dict, char **op_errstr,
char **master, char **slave, char **host_uuid);
+
+int glusterd_stop_volume (glusterd_volinfo_t *volinfo);
+
/* Synctask part */
int32_t glusterd_op_begin_synctask (rpcsvc_request_t *req, glusterd_op_t op,
void *dict);
@@ -844,4 +968,50 @@ glusterd_txn_opinfo_dict_fini ();
void
glusterd_txn_opinfo_init ();
+/* snapshot */
+glusterd_snap_t*
+glusterd_new_snap_object();
+
+int32_t
+glusterd_list_add_snapvol (glusterd_volinfo_t *origin_vol,
+ glusterd_volinfo_t *snap_vol);
+
+glusterd_snap_t*
+glusterd_remove_snap_by_id (uuid_t snap_id);
+
+glusterd_snap_t*
+glusterd_remove_snap_by_name (char *snap_name);
+
+glusterd_snap_t*
+glusterd_find_snap_by_name (char *snap_name);
+
+glusterd_snap_t*
+glusterd_find_snap_by_id (uuid_t snap_id);
+
+int
+glusterd_snapshot_prevalidate (dict_t *dict, char **op_errstr,
+ dict_t *rsp_dict);
+int
+glusterd_snapshot_brickop (dict_t *dict, char **op_errstr, dict_t *rsp_dict);
+int
+glusterd_snapshot (dict_t *dict, char **op_errstr, dict_t *rsp_dict);
+int
+glusterd_snapshot_postvalidate (dict_t *dict, int32_t op_ret, char **op_errstr,
+ dict_t *rsp_dict);
+char *
+glusterd_build_snap_device_path (char *device, char *snapname);
+int32_t
+glusterd_snap_remove (dict_t *rsp_dict, glusterd_snap_t *snap,
+ gf_boolean_t remove_lvm, gf_boolean_t force);
+int32_t
+glusterd_snapshot_cleanup (dict_t *dict, char **op_errstr, dict_t *rsp_dict);
+
+int32_t
+glusterd_add_missed_snaps_to_list (dict_t *dict, int32_t missed_snap_count);
+
+int32_t
+glusterd_store_missed_snaps_list (char *missed_info, int32_t brick_num,
+ char *brick_path, int32_t snap_op,
+ int32_t snap_status);
+
#endif