mirror of https://gitee.com/openkylin/linux.git
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 <teigland@redhat.com>
This commit is contained in:
David Teigland
parent
f95a34c665
commit
757a427196
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@ -117,6 +117,18 @@ struct dlm_member {
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struct list_head list;
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int nodeid;
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int weight;
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int slot;
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int slot_prev;
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uint32_t generation;
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};
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/*
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* low nodeid saves array of these in ls_slots
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*/
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struct dlm_slot {
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int nodeid;
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int slot;
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};
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/*
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@ -337,7 +349,9 @@ static inline int rsb_flag(struct dlm_rsb *r, enum rsb_flags flag)
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/* dlm_header is first element of all structs sent between nodes */
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#define DLM_HEADER_MAJOR 0x00030000
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#define DLM_HEADER_MINOR 0x00000000
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#define DLM_HEADER_MINOR 0x00000001
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#define DLM_HEADER_SLOTS 0x00000001
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#define DLM_MSG 1
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#define DLM_RCOM 2
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@ -425,10 +439,34 @@ union dlm_packet {
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struct dlm_rcom rcom;
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};
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#define DLM_RSF_NEED_SLOTS 0x00000001
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/* RCOM_STATUS data */
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struct rcom_status {
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__le32 rs_flags;
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__le32 rs_unused1;
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__le64 rs_unused2;
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};
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/* RCOM_STATUS_REPLY data */
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struct rcom_config {
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__le32 rf_lvblen;
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__le32 rf_lsflags;
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__le64 rf_unused;
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/* DLM_HEADER_SLOTS adds: */
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__le32 rf_flags;
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__le16 rf_our_slot;
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__le16 rf_num_slots;
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__le32 rf_generation;
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__le32 rf_unused1;
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__le64 rf_unused2;
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};
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struct rcom_slot {
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__le32 ro_nodeid;
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__le16 ro_slot;
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__le16 ro_unused1;
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__le64 ro_unused2;
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};
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struct rcom_lock {
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@ -455,6 +493,7 @@ struct dlm_ls {
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struct list_head ls_list; /* list of lockspaces */
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dlm_lockspace_t *ls_local_handle;
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uint32_t ls_global_id; /* global unique lockspace ID */
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uint32_t ls_generation;
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uint32_t ls_exflags;
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int ls_lvblen;
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int ls_count; /* refcount of processes in
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@ -493,6 +532,11 @@ struct dlm_ls {
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int ls_total_weight;
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int *ls_node_array;
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int ls_slot;
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int ls_num_slots;
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int ls_slots_size;
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struct dlm_slot *ls_slots;
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struct dlm_rsb ls_stub_rsb; /* for returning errors */
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struct dlm_lkb ls_stub_lkb; /* for returning errors */
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struct dlm_message ls_stub_ms; /* for faking a reply */
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@ -525,6 +525,11 @@ static int new_lockspace(const char *name, int namelen, void **lockspace,
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if (!ls->ls_recover_buf)
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goto out_dirfree;
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ls->ls_slot = 0;
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ls->ls_num_slots = 0;
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ls->ls_slots_size = 0;
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ls->ls_slots = NULL;
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INIT_LIST_HEAD(&ls->ls_recover_list);
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spin_lock_init(&ls->ls_recover_list_lock);
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ls->ls_recover_list_count = 0;
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284
fs/dlm/member.c
284
fs/dlm/member.c
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@ -19,6 +19,280 @@
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#include "config.h"
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#include "lowcomms.h"
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int dlm_slots_version(struct dlm_header *h)
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{
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if ((h->h_version & 0x0000FFFF) < DLM_HEADER_SLOTS)
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return 0;
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return 1;
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}
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void dlm_slot_save(struct dlm_ls *ls, struct dlm_rcom *rc,
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struct dlm_member *memb)
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{
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struct rcom_config *rf = (struct rcom_config *)rc->rc_buf;
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if (!dlm_slots_version(&rc->rc_header))
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return;
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memb->slot = le16_to_cpu(rf->rf_our_slot);
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memb->generation = le32_to_cpu(rf->rf_generation);
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}
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void dlm_slots_copy_out(struct dlm_ls *ls, struct dlm_rcom *rc)
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{
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struct dlm_slot *slot;
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struct rcom_slot *ro;
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int i;
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ro = (struct rcom_slot *)(rc->rc_buf + sizeof(struct rcom_config));
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/* ls_slots array is sparse, but not rcom_slots */
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for (i = 0; i < ls->ls_slots_size; i++) {
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slot = &ls->ls_slots[i];
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if (!slot->nodeid)
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continue;
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ro->ro_nodeid = cpu_to_le32(slot->nodeid);
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ro->ro_slot = cpu_to_le16(slot->slot);
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ro++;
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}
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}
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#define SLOT_DEBUG_LINE 128
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static void log_debug_slots(struct dlm_ls *ls, uint32_t gen, int num_slots,
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struct rcom_slot *ro0, struct dlm_slot *array,
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int array_size)
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{
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char line[SLOT_DEBUG_LINE];
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int len = SLOT_DEBUG_LINE - 1;
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int pos = 0;
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int ret, i;
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if (!dlm_config.ci_log_debug)
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return;
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memset(line, 0, sizeof(line));
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if (array) {
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for (i = 0; i < array_size; i++) {
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if (!array[i].nodeid)
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continue;
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ret = snprintf(line + pos, len - pos, " %d:%d",
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array[i].slot, array[i].nodeid);
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if (ret >= len - pos)
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break;
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pos += ret;
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}
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} else if (ro0) {
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for (i = 0; i < num_slots; i++) {
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ret = snprintf(line + pos, len - pos, " %d:%d",
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ro0[i].ro_slot, ro0[i].ro_nodeid);
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if (ret >= len - pos)
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break;
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pos += ret;
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}
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}
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log_debug(ls, "generation %u slots %d%s", gen, num_slots, line);
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}
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int dlm_slots_copy_in(struct dlm_ls *ls)
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{
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struct dlm_member *memb;
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struct dlm_rcom *rc = ls->ls_recover_buf;
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struct rcom_config *rf = (struct rcom_config *)rc->rc_buf;
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struct rcom_slot *ro0, *ro;
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int our_nodeid = dlm_our_nodeid();
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int i, num_slots;
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uint32_t gen;
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if (!dlm_slots_version(&rc->rc_header))
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return -1;
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gen = le32_to_cpu(rf->rf_generation);
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if (gen <= ls->ls_generation) {
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log_error(ls, "dlm_slots_copy_in gen %u old %u",
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gen, ls->ls_generation);
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}
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ls->ls_generation = gen;
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num_slots = le16_to_cpu(rf->rf_num_slots);
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if (!num_slots)
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return -1;
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ro0 = (struct rcom_slot *)(rc->rc_buf + sizeof(struct rcom_config));
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for (i = 0, ro = ro0; i < num_slots; i++, ro++) {
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ro->ro_nodeid = le32_to_cpu(ro->ro_nodeid);
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ro->ro_slot = le16_to_cpu(ro->ro_slot);
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}
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log_debug_slots(ls, gen, num_slots, ro0, NULL, 0);
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list_for_each_entry(memb, &ls->ls_nodes, list) {
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for (i = 0, ro = ro0; i < num_slots; i++, ro++) {
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if (ro->ro_nodeid != memb->nodeid)
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continue;
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memb->slot = ro->ro_slot;
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memb->slot_prev = memb->slot;
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break;
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}
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if (memb->nodeid == our_nodeid) {
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if (ls->ls_slot && ls->ls_slot != memb->slot) {
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log_error(ls, "dlm_slots_copy_in our slot "
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"changed %d %d", ls->ls_slot,
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memb->slot);
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return -1;
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}
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if (!ls->ls_slot)
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ls->ls_slot = memb->slot;
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}
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if (!memb->slot) {
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log_error(ls, "dlm_slots_copy_in nodeid %d no slot",
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memb->nodeid);
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return -1;
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}
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}
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return 0;
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}
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/* for any nodes that do not support slots, we will not have set memb->slot
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in wait_status_all(), so memb->slot will remain -1, and we will not
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assign slots or set ls_num_slots here */
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int dlm_slots_assign(struct dlm_ls *ls, int *num_slots, int *slots_size,
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struct dlm_slot **slots_out, uint32_t *gen_out)
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{
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struct dlm_member *memb;
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struct dlm_slot *array;
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int our_nodeid = dlm_our_nodeid();
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int array_size, max_slots, i;
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int need = 0;
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int max = 0;
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int num = 0;
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uint32_t gen = 0;
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/* our own memb struct will have slot -1 gen 0 */
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list_for_each_entry(memb, &ls->ls_nodes, list) {
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if (memb->nodeid == our_nodeid) {
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memb->slot = ls->ls_slot;
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memb->generation = ls->ls_generation;
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break;
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}
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}
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list_for_each_entry(memb, &ls->ls_nodes, list) {
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if (memb->generation > gen)
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gen = memb->generation;
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/* node doesn't support slots */
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if (memb->slot == -1)
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return -1;
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/* node needs a slot assigned */
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if (!memb->slot)
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need++;
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/* node has a slot assigned */
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num++;
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if (!max || max < memb->slot)
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max = memb->slot;
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/* sanity check, once slot is assigned it shouldn't change */
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if (memb->slot_prev && memb->slot && memb->slot_prev != memb->slot) {
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log_error(ls, "nodeid %d slot changed %d %d",
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memb->nodeid, memb->slot_prev, memb->slot);
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return -1;
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}
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memb->slot_prev = memb->slot;
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}
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array_size = max + need;
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array = kzalloc(array_size * sizeof(struct dlm_slot), GFP_NOFS);
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if (!array)
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return -ENOMEM;
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num = 0;
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/* fill in slots (offsets) that are used */
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list_for_each_entry(memb, &ls->ls_nodes, list) {
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if (!memb->slot)
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continue;
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if (memb->slot > array_size) {
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log_error(ls, "invalid slot number %d", memb->slot);
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kfree(array);
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return -1;
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}
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array[memb->slot - 1].nodeid = memb->nodeid;
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array[memb->slot - 1].slot = memb->slot;
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num++;
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}
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/* assign new slots from unused offsets */
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list_for_each_entry(memb, &ls->ls_nodes, list) {
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if (memb->slot)
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continue;
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for (i = 0; i < array_size; i++) {
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if (array[i].nodeid)
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continue;
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memb->slot = i + 1;
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memb->slot_prev = memb->slot;
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array[i].nodeid = memb->nodeid;
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array[i].slot = memb->slot;
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num++;
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if (!ls->ls_slot && memb->nodeid == our_nodeid)
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ls->ls_slot = memb->slot;
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break;
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}
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if (!memb->slot) {
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log_error(ls, "no free slot found");
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kfree(array);
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return -1;
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}
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}
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gen++;
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log_debug_slots(ls, gen, num, NULL, array, array_size);
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max_slots = (dlm_config.ci_buffer_size - sizeof(struct dlm_rcom) -
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sizeof(struct rcom_config)) / sizeof(struct rcom_slot);
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if (num > max_slots) {
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log_error(ls, "num_slots %d exceeds max_slots %d",
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num, max_slots);
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kfree(array);
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return -1;
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}
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*gen_out = gen;
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*slots_out = array;
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*slots_size = array_size;
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*num_slots = num;
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return 0;
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}
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static void add_ordered_member(struct dlm_ls *ls, struct dlm_member *new)
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{
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struct dlm_member *memb = NULL;
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@ -176,7 +450,7 @@ static int ping_members(struct dlm_ls *ls)
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error = dlm_recovery_stopped(ls);
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if (error)
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break;
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error = dlm_rcom_status(ls, memb->nodeid);
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error = dlm_rcom_status(ls, memb->nodeid, 0);
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if (error)
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break;
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}
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@ -322,7 +596,15 @@ int dlm_ls_stop(struct dlm_ls *ls)
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*/
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dlm_recoverd_suspend(ls);
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spin_lock(&ls->ls_recover_lock);
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kfree(ls->ls_slots);
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ls->ls_slots = NULL;
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ls->ls_num_slots = 0;
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ls->ls_slots_size = 0;
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ls->ls_recover_status = 0;
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spin_unlock(&ls->ls_recover_lock);
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dlm_recoverd_resume(ls);
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if (!ls->ls_recover_begin)
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@ -20,6 +20,13 @@ void dlm_clear_members_gone(struct dlm_ls *ls);
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int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv,int *neg_out);
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int dlm_is_removed(struct dlm_ls *ls, int nodeid);
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int dlm_is_member(struct dlm_ls *ls, int nodeid);
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int dlm_slots_version(struct dlm_header *h);
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void dlm_slot_save(struct dlm_ls *ls, struct dlm_rcom *rc,
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struct dlm_member *memb);
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void dlm_slots_copy_out(struct dlm_ls *ls, struct dlm_rcom *rc);
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int dlm_slots_copy_in(struct dlm_ls *ls);
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int dlm_slots_assign(struct dlm_ls *ls, int *num_slots, int *slots_size,
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struct dlm_slot **slots_out, uint32_t *gen_out);
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#endif /* __MEMBER_DOT_H__ */
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@ -23,6 +23,7 @@
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#include "memory.h"
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#include "lock.h"
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#include "util.h"
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#include "member.h"
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static int rcom_response(struct dlm_ls *ls)
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@ -72,20 +73,30 @@ static void send_rcom(struct dlm_ls *ls, struct dlm_mhandle *mh,
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dlm_lowcomms_commit_buffer(mh);
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}
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static void set_rcom_status(struct dlm_ls *ls, struct rcom_status *rs,
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uint32_t flags)
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{
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rs->rs_flags = cpu_to_le32(flags);
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}
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/* When replying to a status request, a node also sends back its
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configuration values. The requesting node then checks that the remote
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node is configured the same way as itself. */
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static void make_config(struct dlm_ls *ls, struct rcom_config *rf)
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static void set_rcom_config(struct dlm_ls *ls, struct rcom_config *rf,
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uint32_t num_slots)
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{
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rf->rf_lvblen = cpu_to_le32(ls->ls_lvblen);
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rf->rf_lsflags = cpu_to_le32(ls->ls_exflags);
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rf->rf_our_slot = cpu_to_le16(ls->ls_slot);
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rf->rf_num_slots = cpu_to_le16(num_slots);
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rf->rf_generation = cpu_to_le32(ls->ls_generation);
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}
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static int check_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
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static int check_rcom_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
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{
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struct rcom_config *rf = (struct rcom_config *) rc->rc_buf;
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size_t conf_size = sizeof(struct dlm_rcom) + sizeof(struct rcom_config);
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|
||||
if ((rc->rc_header.h_version & 0xFFFF0000) != DLM_HEADER_MAJOR) {
|
||||
log_error(ls, "version mismatch: %x nodeid %d: %x",
|
||||
|
|
@ -94,12 +105,6 @@ static int check_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
|
|||
return -EPROTO;
|
||||
}
|
||||
|
||||
if (rc->rc_header.h_length < conf_size) {
|
||||
log_error(ls, "config too short: %d nodeid %d",
|
||||
rc->rc_header.h_length, nodeid);
|
||||
return -EPROTO;
|
||||
}
|
||||
|
||||
if (le32_to_cpu(rf->rf_lvblen) != ls->ls_lvblen ||
|
||||
le32_to_cpu(rf->rf_lsflags) != ls->ls_exflags) {
|
||||
log_error(ls, "config mismatch: %d,%x nodeid %d: %d,%x",
|
||||
|
|
@ -127,7 +132,18 @@ static void disallow_sync_reply(struct dlm_ls *ls)
|
|||
spin_unlock(&ls->ls_rcom_spin);
|
||||
}
|
||||
|
||||
int dlm_rcom_status(struct dlm_ls *ls, int nodeid)
|
||||
/*
|
||||
* low nodeid gathers one slot value at a time from each node.
|
||||
* it sets need_slots=0, and saves rf_our_slot returned from each
|
||||
* rcom_config.
|
||||
*
|
||||
* other nodes gather all slot values at once from the low nodeid.
|
||||
* they set need_slots=1, and ignore the rf_our_slot returned from each
|
||||
* rcom_config. they use the rf_num_slots returned from the low
|
||||
* node's rcom_config.
|
||||
*/
|
||||
|
||||
int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags)
|
||||
{
|
||||
struct dlm_rcom *rc;
|
||||
struct dlm_mhandle *mh;
|
||||
|
|
@ -141,10 +157,13 @@ int dlm_rcom_status(struct dlm_ls *ls, int nodeid)
|
|||
goto out;
|
||||
}
|
||||
|
||||
error = create_rcom(ls, nodeid, DLM_RCOM_STATUS, 0, &rc, &mh);
|
||||
error = create_rcom(ls, nodeid, DLM_RCOM_STATUS,
|
||||
sizeof(struct rcom_status), &rc, &mh);
|
||||
if (error)
|
||||
goto out;
|
||||
|
||||
set_rcom_status(ls, (struct rcom_status *)rc->rc_buf, status_flags);
|
||||
|
||||
allow_sync_reply(ls, &rc->rc_id);
|
||||
memset(ls->ls_recover_buf, 0, dlm_config.ci_buffer_size);
|
||||
|
||||
|
|
@ -161,8 +180,11 @@ int dlm_rcom_status(struct dlm_ls *ls, int nodeid)
|
|||
/* we pretend the remote lockspace exists with 0 status */
|
||||
log_debug(ls, "remote node %d not ready", nodeid);
|
||||
rc->rc_result = 0;
|
||||
} else
|
||||
error = check_config(ls, rc, nodeid);
|
||||
error = 0;
|
||||
} else {
|
||||
error = check_rcom_config(ls, rc, nodeid);
|
||||
}
|
||||
|
||||
/* the caller looks at rc_result for the remote recovery status */
|
||||
out:
|
||||
return error;
|
||||
|
|
@ -172,17 +194,60 @@ static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in)
|
|||
{
|
||||
struct dlm_rcom *rc;
|
||||
struct dlm_mhandle *mh;
|
||||
int error, nodeid = rc_in->rc_header.h_nodeid;
|
||||
struct rcom_status *rs;
|
||||
uint32_t status;
|
||||
int nodeid = rc_in->rc_header.h_nodeid;
|
||||
int len = sizeof(struct rcom_config);
|
||||
int num_slots = 0;
|
||||
int error;
|
||||
|
||||
if (!dlm_slots_version(&rc_in->rc_header)) {
|
||||
status = dlm_recover_status(ls);
|
||||
goto do_create;
|
||||
}
|
||||
|
||||
rs = (struct rcom_status *)rc_in->rc_buf;
|
||||
|
||||
if (!(rs->rs_flags & DLM_RSF_NEED_SLOTS)) {
|
||||
status = dlm_recover_status(ls);
|
||||
goto do_create;
|
||||
}
|
||||
|
||||
spin_lock(&ls->ls_recover_lock);
|
||||
status = ls->ls_recover_status;
|
||||
num_slots = ls->ls_num_slots;
|
||||
spin_unlock(&ls->ls_recover_lock);
|
||||
len += num_slots * sizeof(struct rcom_slot);
|
||||
|
||||
do_create:
|
||||
error = create_rcom(ls, nodeid, DLM_RCOM_STATUS_REPLY,
|
||||
sizeof(struct rcom_config), &rc, &mh);
|
||||
len, &rc, &mh);
|
||||
if (error)
|
||||
return;
|
||||
|
||||
rc->rc_id = rc_in->rc_id;
|
||||
rc->rc_seq_reply = rc_in->rc_seq;
|
||||
rc->rc_result = dlm_recover_status(ls);
|
||||
make_config(ls, (struct rcom_config *) rc->rc_buf);
|
||||
rc->rc_result = status;
|
||||
|
||||
set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, num_slots);
|
||||
|
||||
if (!num_slots)
|
||||
goto do_send;
|
||||
|
||||
spin_lock(&ls->ls_recover_lock);
|
||||
if (ls->ls_num_slots != num_slots) {
|
||||
spin_unlock(&ls->ls_recover_lock);
|
||||
log_debug(ls, "receive_rcom_status num_slots %d to %d",
|
||||
num_slots, ls->ls_num_slots);
|
||||
rc->rc_result = 0;
|
||||
set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, 0);
|
||||
goto do_send;
|
||||
}
|
||||
|
||||
dlm_slots_copy_out(ls, rc);
|
||||
spin_unlock(&ls->ls_recover_lock);
|
||||
|
||||
do_send:
|
||||
send_rcom(ls, mh, rc);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -14,7 +14,7 @@
|
|||
#ifndef __RCOM_DOT_H__
|
||||
#define __RCOM_DOT_H__
|
||||
|
||||
int dlm_rcom_status(struct dlm_ls *ls, int nodeid);
|
||||
int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags);
|
||||
int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name,int last_len);
|
||||
int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid);
|
||||
int dlm_send_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb);
|
||||
|
|
|
|||
|
|
@ -85,14 +85,20 @@ uint32_t dlm_recover_status(struct dlm_ls *ls)
|
|||
return status;
|
||||
}
|
||||
|
||||
static void _set_recover_status(struct dlm_ls *ls, uint32_t status)
|
||||
{
|
||||
ls->ls_recover_status |= status;
|
||||
}
|
||||
|
||||
void dlm_set_recover_status(struct dlm_ls *ls, uint32_t status)
|
||||
{
|
||||
spin_lock(&ls->ls_recover_lock);
|
||||
ls->ls_recover_status |= status;
|
||||
_set_recover_status(ls, status);
|
||||
spin_unlock(&ls->ls_recover_lock);
|
||||
}
|
||||
|
||||
static int wait_status_all(struct dlm_ls *ls, uint32_t wait_status)
|
||||
static int wait_status_all(struct dlm_ls *ls, uint32_t wait_status,
|
||||
int save_slots)
|
||||
{
|
||||
struct dlm_rcom *rc = ls->ls_recover_buf;
|
||||
struct dlm_member *memb;
|
||||
|
|
@ -106,10 +112,13 @@ static int wait_status_all(struct dlm_ls *ls, uint32_t wait_status)
|
|||
goto out;
|
||||
}
|
||||
|
||||
error = dlm_rcom_status(ls, memb->nodeid);
|
||||
error = dlm_rcom_status(ls, memb->nodeid, 0);
|
||||
if (error)
|
||||
goto out;
|
||||
|
||||
if (save_slots)
|
||||
dlm_slot_save(ls, rc, memb);
|
||||
|
||||
if (rc->rc_result & wait_status)
|
||||
break;
|
||||
if (delay < 1000)
|
||||
|
|
@ -121,7 +130,8 @@ static int wait_status_all(struct dlm_ls *ls, uint32_t wait_status)
|
|||
return error;
|
||||
}
|
||||
|
||||
static int wait_status_low(struct dlm_ls *ls, uint32_t wait_status)
|
||||
static int wait_status_low(struct dlm_ls *ls, uint32_t wait_status,
|
||||
uint32_t status_flags)
|
||||
{
|
||||
struct dlm_rcom *rc = ls->ls_recover_buf;
|
||||
int error = 0, delay = 0, nodeid = ls->ls_low_nodeid;
|
||||
|
|
@ -132,7 +142,7 @@ static int wait_status_low(struct dlm_ls *ls, uint32_t wait_status)
|
|||
goto out;
|
||||
}
|
||||
|
||||
error = dlm_rcom_status(ls, nodeid);
|
||||
error = dlm_rcom_status(ls, nodeid, status_flags);
|
||||
if (error)
|
||||
break;
|
||||
|
||||
|
|
@ -152,18 +162,56 @@ static int wait_status(struct dlm_ls *ls, uint32_t status)
|
|||
int error;
|
||||
|
||||
if (ls->ls_low_nodeid == dlm_our_nodeid()) {
|
||||
error = wait_status_all(ls, status);
|
||||
error = wait_status_all(ls, status, 0);
|
||||
if (!error)
|
||||
dlm_set_recover_status(ls, status_all);
|
||||
} else
|
||||
error = wait_status_low(ls, status_all);
|
||||
error = wait_status_low(ls, status_all, 0);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
int dlm_recover_members_wait(struct dlm_ls *ls)
|
||||
{
|
||||
return wait_status(ls, DLM_RS_NODES);
|
||||
struct dlm_member *memb;
|
||||
struct dlm_slot *slots;
|
||||
int num_slots, slots_size;
|
||||
int error, rv;
|
||||
uint32_t gen;
|
||||
|
||||
list_for_each_entry(memb, &ls->ls_nodes, list) {
|
||||
memb->slot = -1;
|
||||
memb->generation = 0;
|
||||
}
|
||||
|
||||
if (ls->ls_low_nodeid == dlm_our_nodeid()) {
|
||||
error = wait_status_all(ls, DLM_RS_NODES, 1);
|
||||
if (error)
|
||||
goto out;
|
||||
|
||||
/* slots array is sparse, slots_size may be > num_slots */
|
||||
|
||||
rv = dlm_slots_assign(ls, &num_slots, &slots_size, &slots, &gen);
|
||||
if (!rv) {
|
||||
spin_lock(&ls->ls_recover_lock);
|
||||
_set_recover_status(ls, DLM_RS_NODES_ALL);
|
||||
ls->ls_num_slots = num_slots;
|
||||
ls->ls_slots_size = slots_size;
|
||||
ls->ls_slots = slots;
|
||||
ls->ls_generation = gen;
|
||||
spin_unlock(&ls->ls_recover_lock);
|
||||
} else {
|
||||
dlm_set_recover_status(ls, DLM_RS_NODES_ALL);
|
||||
}
|
||||
} else {
|
||||
error = wait_status_low(ls, DLM_RS_NODES_ALL, DLM_RSF_NEED_SLOTS);
|
||||
if (error)
|
||||
goto out;
|
||||
|
||||
dlm_slots_copy_in(ls);
|
||||
}
|
||||
out:
|
||||
return error;
|
||||
}
|
||||
|
||||
int dlm_recover_directory_wait(struct dlm_ls *ls)
|
||||
|
|
|
|||
Loading…
Reference in New Issue