#include <linux/drbd_limits.h>
#include "drbd_int.h"
+#include "drbd_protocol.h"
#include "drbd_req.h"
-/* in drbd_main.c */
-extern void tl_abort_disk_io(struct drbd_conf *mdev);
-
struct after_state_chg_work {
struct drbd_work w;
union drbd_state os;
};
static int w_after_state_ch(struct drbd_work *w, int unused);
-static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
+static void after_state_ch(struct drbd_device *device, union drbd_state os,
union drbd_state ns, enum chg_state_flags flags);
-static enum drbd_state_rv is_valid_state(struct drbd_conf *, union drbd_state);
-static enum drbd_state_rv is_valid_soft_transition(union drbd_state, union drbd_state, struct drbd_tconn *);
+static enum drbd_state_rv is_valid_state(struct drbd_device *, union drbd_state);
+static enum drbd_state_rv is_valid_soft_transition(union drbd_state, union drbd_state, struct drbd_connection *);
static enum drbd_state_rv is_valid_transition(union drbd_state os, union drbd_state ns);
-static union drbd_state sanitize_state(struct drbd_conf *mdev, union drbd_state ns,
+static union drbd_state sanitize_state(struct drbd_device *device, union drbd_state ns,
enum sanitize_state_warnings *warn);
static inline bool is_susp(union drbd_state s)
return s.susp || s.susp_nod || s.susp_fen;
}
-bool conn_all_vols_unconf(struct drbd_tconn *tconn)
+bool conn_all_vols_unconf(struct drbd_connection *connection)
{
- struct drbd_conf *mdev;
+ struct drbd_device *device;
bool rv = true;
int vnr;
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr) {
- if (mdev->state.disk != D_DISKLESS ||
- mdev->state.conn != C_STANDALONE ||
- mdev->state.role != R_SECONDARY) {
+ idr_for_each_entry(&connection->volumes, device, vnr) {
+ if (device->state.disk != D_DISKLESS ||
+ device->state.conn != C_STANDALONE ||
+ device->state.role != R_SECONDARY) {
rv = false;
break;
}
return R_PRIMARY;
}
-enum drbd_role conn_highest_role(struct drbd_tconn *tconn)
+enum drbd_role conn_highest_role(struct drbd_connection *connection)
{
enum drbd_role role = R_UNKNOWN;
- struct drbd_conf *mdev;
+ struct drbd_device *device;
int vnr;
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr)
- role = max_role(role, mdev->state.role);
+ idr_for_each_entry(&connection->volumes, device, vnr)
+ role = max_role(role, device->state.role);
rcu_read_unlock();
return role;
}
-enum drbd_role conn_highest_peer(struct drbd_tconn *tconn)
+enum drbd_role conn_highest_peer(struct drbd_connection *connection)
{
enum drbd_role peer = R_UNKNOWN;
- struct drbd_conf *mdev;
+ struct drbd_device *device;
int vnr;
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr)
- peer = max_role(peer, mdev->state.peer);
+ idr_for_each_entry(&connection->volumes, device, vnr)
+ peer = max_role(peer, device->state.peer);
rcu_read_unlock();
return peer;
}
-enum drbd_disk_state conn_highest_disk(struct drbd_tconn *tconn)
+enum drbd_disk_state conn_highest_disk(struct drbd_connection *connection)
{
enum drbd_disk_state ds = D_DISKLESS;
- struct drbd_conf *mdev;
+ struct drbd_device *device;
int vnr;
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr)
- ds = max_t(enum drbd_disk_state, ds, mdev->state.disk);
+ idr_for_each_entry(&connection->volumes, device, vnr)
+ ds = max_t(enum drbd_disk_state, ds, device->state.disk);
rcu_read_unlock();
return ds;
}
-enum drbd_disk_state conn_lowest_disk(struct drbd_tconn *tconn)
+enum drbd_disk_state conn_lowest_disk(struct drbd_connection *connection)
{
enum drbd_disk_state ds = D_MASK;
- struct drbd_conf *mdev;
+ struct drbd_device *device;
int vnr;
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr)
- ds = min_t(enum drbd_disk_state, ds, mdev->state.disk);
+ idr_for_each_entry(&connection->volumes, device, vnr)
+ ds = min_t(enum drbd_disk_state, ds, device->state.disk);
rcu_read_unlock();
return ds;
}
-enum drbd_disk_state conn_highest_pdsk(struct drbd_tconn *tconn)
+enum drbd_disk_state conn_highest_pdsk(struct drbd_connection *connection)
{
enum drbd_disk_state ds = D_DISKLESS;
- struct drbd_conf *mdev;
+ struct drbd_device *device;
int vnr;
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr)
- ds = max_t(enum drbd_disk_state, ds, mdev->state.pdsk);
+ idr_for_each_entry(&connection->volumes, device, vnr)
+ ds = max_t(enum drbd_disk_state, ds, device->state.pdsk);
rcu_read_unlock();
return ds;
}
-enum drbd_conns conn_lowest_conn(struct drbd_tconn *tconn)
+enum drbd_conns conn_lowest_conn(struct drbd_connection *connection)
{
enum drbd_conns conn = C_MASK;
- struct drbd_conf *mdev;
+ struct drbd_device *device;
int vnr;
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr)
- conn = min_t(enum drbd_conns, conn, mdev->state.conn);
+ idr_for_each_entry(&connection->volumes, device, vnr)
+ conn = min_t(enum drbd_conns, conn, device->state.conn);
rcu_read_unlock();
return conn;
}
-static bool no_peer_wf_report_params(struct drbd_tconn *tconn)
+static bool no_peer_wf_report_params(struct drbd_connection *connection)
{
- struct drbd_conf *mdev;
+ struct drbd_device *device;
int vnr;
bool rv = true;
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr)
- if (mdev->state.conn == C_WF_REPORT_PARAMS) {
+ idr_for_each_entry(&connection->volumes, device, vnr)
+ if (device->state.conn == C_WF_REPORT_PARAMS) {
rv = false;
break;
}
/**
* cl_wide_st_chg() - true if the state change is a cluster wide one
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @os: old (current) state.
* @ns: new (wanted) state.
*/
-static int cl_wide_st_chg(struct drbd_conf *mdev,
+static int cl_wide_st_chg(struct drbd_device *device,
union drbd_state os, union drbd_state ns)
{
return (os.conn >= C_CONNECTED && ns.conn >= C_CONNECTED &&
}
enum drbd_state_rv
-drbd_change_state(struct drbd_conf *mdev, enum chg_state_flags f,
+drbd_change_state(struct drbd_device *device, enum chg_state_flags f,
union drbd_state mask, union drbd_state val)
{
unsigned long flags;
union drbd_state ns;
enum drbd_state_rv rv;
- spin_lock_irqsave(&mdev->tconn->req_lock, flags);
- ns = apply_mask_val(drbd_read_state(mdev), mask, val);
- rv = _drbd_set_state(mdev, ns, f, NULL);
- spin_unlock_irqrestore(&mdev->tconn->req_lock, flags);
+ spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags);
+ ns = apply_mask_val(drbd_read_state(device), mask, val);
+ rv = _drbd_set_state(device, ns, f, NULL);
+ spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags);
return rv;
}
/**
* drbd_force_state() - Impose a change which happens outside our control on our state
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @mask: mask of state bits to change.
* @val: value of new state bits.
*/
-void drbd_force_state(struct drbd_conf *mdev,
+void drbd_force_state(struct drbd_device *device,
union drbd_state mask, union drbd_state val)
{
- drbd_change_state(mdev, CS_HARD, mask, val);
+ drbd_change_state(device, CS_HARD, mask, val);
}
static enum drbd_state_rv
-_req_st_cond(struct drbd_conf *mdev, union drbd_state mask,
+_req_st_cond(struct drbd_device *device, union drbd_state mask,
union drbd_state val)
{
union drbd_state os, ns;
unsigned long flags;
enum drbd_state_rv rv;
- if (test_and_clear_bit(CL_ST_CHG_SUCCESS, &mdev->flags))
+ if (test_and_clear_bit(CL_ST_CHG_SUCCESS, &device->flags))
return SS_CW_SUCCESS;
- if (test_and_clear_bit(CL_ST_CHG_FAIL, &mdev->flags))
+ if (test_and_clear_bit(CL_ST_CHG_FAIL, &device->flags))
return SS_CW_FAILED_BY_PEER;
- spin_lock_irqsave(&mdev->tconn->req_lock, flags);
- os = drbd_read_state(mdev);
- ns = sanitize_state(mdev, apply_mask_val(os, mask, val), NULL);
+ spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags);
+ os = drbd_read_state(device);
+ ns = sanitize_state(device, apply_mask_val(os, mask, val), NULL);
rv = is_valid_transition(os, ns);
if (rv >= SS_SUCCESS)
rv = SS_UNKNOWN_ERROR; /* cont waiting, otherwise fail. */
- if (!cl_wide_st_chg(mdev, os, ns))
+ if (!cl_wide_st_chg(device, os, ns))
rv = SS_CW_NO_NEED;
if (rv == SS_UNKNOWN_ERROR) {
- rv = is_valid_state(mdev, ns);
+ rv = is_valid_state(device, ns);
if (rv >= SS_SUCCESS) {
- rv = is_valid_soft_transition(os, ns, mdev->tconn);
+ rv = is_valid_soft_transition(os, ns, first_peer_device(device)->connection);
if (rv >= SS_SUCCESS)
rv = SS_UNKNOWN_ERROR; /* cont waiting, otherwise fail. */
}
}
- spin_unlock_irqrestore(&mdev->tconn->req_lock, flags);
+ spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags);
return rv;
}
/**
* drbd_req_state() - Perform an eventually cluster wide state change
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @mask: mask of state bits to change.
* @val: value of new state bits.
* @f: flags
* _drbd_request_state().
*/
static enum drbd_state_rv
-drbd_req_state(struct drbd_conf *mdev, union drbd_state mask,
+drbd_req_state(struct drbd_device *device, union drbd_state mask,
union drbd_state val, enum chg_state_flags f)
{
struct completion done;
init_completion(&done);
if (f & CS_SERIALIZE)
- mutex_lock(mdev->state_mutex);
+ mutex_lock(device->state_mutex);
- spin_lock_irqsave(&mdev->tconn->req_lock, flags);
- os = drbd_read_state(mdev);
- ns = sanitize_state(mdev, apply_mask_val(os, mask, val), NULL);
+ spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags);
+ os = drbd_read_state(device);
+ ns = sanitize_state(device, apply_mask_val(os, mask, val), NULL);
rv = is_valid_transition(os, ns);
if (rv < SS_SUCCESS) {
- spin_unlock_irqrestore(&mdev->tconn->req_lock, flags);
+ spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags);
goto abort;
}
- if (cl_wide_st_chg(mdev, os, ns)) {
- rv = is_valid_state(mdev, ns);
+ if (cl_wide_st_chg(device, os, ns)) {
+ rv = is_valid_state(device, ns);
if (rv == SS_SUCCESS)
- rv = is_valid_soft_transition(os, ns, mdev->tconn);
- spin_unlock_irqrestore(&mdev->tconn->req_lock, flags);
+ rv = is_valid_soft_transition(os, ns, first_peer_device(device)->connection);
+ spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags);
if (rv < SS_SUCCESS) {
if (f & CS_VERBOSE)
- print_st_err(mdev, os, ns, rv);
+ print_st_err(device, os, ns, rv);
goto abort;
}
- if (drbd_send_state_req(mdev, mask, val)) {
+ if (drbd_send_state_req(device, mask, val)) {
rv = SS_CW_FAILED_BY_PEER;
if (f & CS_VERBOSE)
- print_st_err(mdev, os, ns, rv);
+ print_st_err(device, os, ns, rv);
goto abort;
}
- wait_event(mdev->state_wait,
- (rv = _req_st_cond(mdev, mask, val)));
+ wait_event(device->state_wait,
+ (rv = _req_st_cond(device, mask, val)));
if (rv < SS_SUCCESS) {
if (f & CS_VERBOSE)
- print_st_err(mdev, os, ns, rv);
+ print_st_err(device, os, ns, rv);
goto abort;
}
- spin_lock_irqsave(&mdev->tconn->req_lock, flags);
- ns = apply_mask_val(drbd_read_state(mdev), mask, val);
- rv = _drbd_set_state(mdev, ns, f, &done);
+ spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags);
+ ns = apply_mask_val(drbd_read_state(device), mask, val);
+ rv = _drbd_set_state(device, ns, f, &done);
} else {
- rv = _drbd_set_state(mdev, ns, f, &done);
+ rv = _drbd_set_state(device, ns, f, &done);
}
- spin_unlock_irqrestore(&mdev->tconn->req_lock, flags);
+ spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags);
if (f & CS_WAIT_COMPLETE && rv == SS_SUCCESS) {
- D_ASSERT(current != mdev->tconn->worker.task);
+ D_ASSERT(current != first_peer_device(device)->connection->worker.task);
wait_for_completion(&done);
}
abort:
if (f & CS_SERIALIZE)
- mutex_unlock(mdev->state_mutex);
+ mutex_unlock(device->state_mutex);
return rv;
}
/**
* _drbd_request_state() - Request a state change (with flags)
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @mask: mask of state bits to change.
* @val: value of new state bits.
* @f: flags
* flag, or when logging of failed state change requests is not desired.
*/
enum drbd_state_rv
-_drbd_request_state(struct drbd_conf *mdev, union drbd_state mask,
+_drbd_request_state(struct drbd_device *device, union drbd_state mask,
union drbd_state val, enum chg_state_flags f)
{
enum drbd_state_rv rv;
- wait_event(mdev->state_wait,
- (rv = drbd_req_state(mdev, mask, val, f)) != SS_IN_TRANSIENT_STATE);
+ wait_event(device->state_wait,
+ (rv = drbd_req_state(device, mask, val, f)) != SS_IN_TRANSIENT_STATE);
return rv;
}
-static void print_st(struct drbd_conf *mdev, char *name, union drbd_state ns)
+static void print_st(struct drbd_device *device, char *name, union drbd_state ns)
{
dev_err(DEV, " %s = { cs:%s ro:%s/%s ds:%s/%s %c%c%c%c%c%c }\n",
name,
);
}
-void print_st_err(struct drbd_conf *mdev, union drbd_state os,
+void print_st_err(struct drbd_device *device, union drbd_state os,
union drbd_state ns, enum drbd_state_rv err)
{
if (err == SS_IN_TRANSIENT_STATE)
return;
dev_err(DEV, "State change failed: %s\n", drbd_set_st_err_str(err));
- print_st(mdev, " state", os);
- print_st(mdev, "wanted", ns);
+ print_st(device, " state", os);
+ print_st(device, "wanted", ns);
}
static long print_state_change(char *pb, union drbd_state os, union drbd_state ns,
return pbp - pb;
}
-static void drbd_pr_state_change(struct drbd_conf *mdev, union drbd_state os, union drbd_state ns,
+static void drbd_pr_state_change(struct drbd_device *device, union drbd_state os, union drbd_state ns,
enum chg_state_flags flags)
{
char pb[300];
dev_info(DEV, "%s\n", pb);
}
-static void conn_pr_state_change(struct drbd_tconn *tconn, union drbd_state os, union drbd_state ns,
+static void conn_pr_state_change(struct drbd_connection *connection, union drbd_state os, union drbd_state ns,
enum chg_state_flags flags)
{
char pb[300];
is_susp(ns));
if (pbp != pb)
- conn_info(tconn, "%s\n", pb);
+ conn_info(connection, "%s\n", pb);
}
/**
* is_valid_state() - Returns an SS_ error code if ns is not valid
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @ns: State to consider.
*/
static enum drbd_state_rv
-is_valid_state(struct drbd_conf *mdev, union drbd_state ns)
+is_valid_state(struct drbd_device *device, union drbd_state ns)
{
/* See drbd_state_sw_errors in drbd_strings.c */
rcu_read_lock();
fp = FP_DONT_CARE;
- if (get_ldev(mdev)) {
- fp = rcu_dereference(mdev->ldev->disk_conf)->fencing;
- put_ldev(mdev);
+ if (get_ldev(device)) {
+ fp = rcu_dereference(device->ldev->disk_conf)->fencing;
+ put_ldev(device);
}
- nc = rcu_dereference(mdev->tconn->net_conf);
+ nc = rcu_dereference(first_peer_device(device)->connection->net_conf);
if (nc) {
if (!nc->two_primaries && ns.role == R_PRIMARY) {
if (ns.peer == R_PRIMARY)
rv = SS_TWO_PRIMARIES;
- else if (conn_highest_peer(mdev->tconn) == R_PRIMARY)
+ else if (conn_highest_peer(first_peer_device(device)->connection) == R_PRIMARY)
rv = SS_O_VOL_PEER_PRI;
}
}
if (rv <= 0)
/* already found a reason to abort */;
- else if (ns.role == R_SECONDARY && mdev->open_cnt)
+ else if (ns.role == R_SECONDARY && device->open_cnt)
rv = SS_DEVICE_IN_USE;
else if (ns.role == R_PRIMARY && ns.conn < C_CONNECTED && ns.disk < D_UP_TO_DATE)
rv = SS_NO_VERIFY_ALG;
else if ((ns.conn == C_VERIFY_S || ns.conn == C_VERIFY_T) &&
- mdev->tconn->agreed_pro_version < 88)
+ first_peer_device(device)->connection->agreed_pro_version < 88)
rv = SS_NOT_SUPPORTED;
else if (ns.role == R_PRIMARY && ns.disk < D_UP_TO_DATE && ns.pdsk < D_UP_TO_DATE)
* is_valid_soft_transition() - Returns an SS_ error code if the state transition is not possible
* This function limits state transitions that may be declined by DRBD. I.e.
* user requests (aka soft transitions).
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @ns: new state.
* @os: old state.
*/
static enum drbd_state_rv
-is_valid_soft_transition(union drbd_state os, union drbd_state ns, struct drbd_tconn *tconn)
+is_valid_soft_transition(union drbd_state os, union drbd_state ns, struct drbd_connection *connection)
{
enum drbd_state_rv rv = SS_SUCCESS;
/* While establishing a connection only allow cstate to change.
Delay/refuse role changes, detach attach etc... */
- if (test_bit(STATE_SENT, &tconn->flags) &&
+ if (test_bit(STATE_SENT, &connection->flags) &&
!(os.conn == C_WF_REPORT_PARAMS ||
(ns.conn == C_WF_REPORT_PARAMS && os.conn == C_WF_CONNECTION)))
rv = SS_IN_TRANSIENT_STATE;
return rv;
}
-static void print_sanitize_warnings(struct drbd_conf *mdev, enum sanitize_state_warnings warn)
+static void print_sanitize_warnings(struct drbd_device *device, enum sanitize_state_warnings warn)
{
static const char *msg_table[] = {
[NO_WARNING] = "",
/**
* sanitize_state() - Resolves implicitly necessary additional changes to a state transition
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @os: old state.
* @ns: new state.
* @warn_sync_abort:
* When we loose connection, we have to set the state of the peers disk (pdsk)
* to D_UNKNOWN. This rule and many more along those lines are in this function.
*/
-static union drbd_state sanitize_state(struct drbd_conf *mdev, union drbd_state ns,
+static union drbd_state sanitize_state(struct drbd_device *device, union drbd_state ns,
enum sanitize_state_warnings *warn)
{
enum drbd_fencing_p fp;
*warn = NO_WARNING;
fp = FP_DONT_CARE;
- if (get_ldev(mdev)) {
+ if (get_ldev(device)) {
rcu_read_lock();
- fp = rcu_dereference(mdev->ldev->disk_conf)->fencing;
+ fp = rcu_dereference(device->ldev->disk_conf)->fencing;
rcu_read_unlock();
- put_ldev(mdev);
+ put_ldev(device);
}
/* Implications from connection to peer and peer_isp */
/* Connection breaks down before we finished "Negotiating" */
if (ns.conn < C_CONNECTED && ns.disk == D_NEGOTIATING &&
- get_ldev_if_state(mdev, D_NEGOTIATING)) {
- if (mdev->ed_uuid == mdev->ldev->md.uuid[UI_CURRENT]) {
- ns.disk = mdev->new_state_tmp.disk;
- ns.pdsk = mdev->new_state_tmp.pdsk;
+ get_ldev_if_state(device, D_NEGOTIATING)) {
+ if (device->ed_uuid == device->ldev->md.uuid[UI_CURRENT]) {
+ ns.disk = device->new_state_tmp.disk;
+ ns.pdsk = device->new_state_tmp.pdsk;
} else {
if (warn)
*warn = CONNECTION_LOST_NEGOTIATING;
ns.disk = D_DISKLESS;
ns.pdsk = D_UNKNOWN;
}
- put_ldev(mdev);
+ put_ldev(device);
}
/* D_CONSISTENT and D_OUTDATED vanish when we get connected */
(ns.role == R_PRIMARY && ns.conn < C_CONNECTED && ns.pdsk > D_OUTDATED))
ns.susp_fen = 1; /* Suspend IO while fence-peer handler runs (peer lost) */
- if (mdev->tconn->res_opts.on_no_data == OND_SUSPEND_IO &&
+ if (first_peer_device(device)->connection->res_opts.on_no_data == OND_SUSPEND_IO &&
(ns.role == R_PRIMARY && ns.disk < D_UP_TO_DATE && ns.pdsk < D_UP_TO_DATE))
ns.susp_nod = 1; /* Suspend IO while no data available (no accessible data available) */
return ns;
}
-void drbd_resume_al(struct drbd_conf *mdev)
+void drbd_resume_al(struct drbd_device *device)
{
- if (test_and_clear_bit(AL_SUSPENDED, &mdev->flags))
+ if (test_and_clear_bit(AL_SUSPENDED, &device->flags))
dev_info(DEV, "Resumed AL updates\n");
}
/* helper for __drbd_set_state */
-static void set_ov_position(struct drbd_conf *mdev, enum drbd_conns cs)
+static void set_ov_position(struct drbd_device *device, enum drbd_conns cs)
{
- if (mdev->tconn->agreed_pro_version < 90)
- mdev->ov_start_sector = 0;
- mdev->rs_total = drbd_bm_bits(mdev);
- mdev->ov_position = 0;
+ if (first_peer_device(device)->connection->agreed_pro_version < 90)
+ device->ov_start_sector = 0;
+ device->rs_total = drbd_bm_bits(device);
+ device->ov_position = 0;
if (cs == C_VERIFY_T) {
/* starting online verify from an arbitrary position
* does not fit well into the existing protocol.
* on C_VERIFY_T, we initialize ov_left and friends
* implicitly in receive_DataRequest once the
* first P_OV_REQUEST is received */
- mdev->ov_start_sector = ~(sector_t)0;
+ device->ov_start_sector = ~(sector_t)0;
} else {
- unsigned long bit = BM_SECT_TO_BIT(mdev->ov_start_sector);
- if (bit >= mdev->rs_total) {
- mdev->ov_start_sector =
- BM_BIT_TO_SECT(mdev->rs_total - 1);
- mdev->rs_total = 1;
+ unsigned long bit = BM_SECT_TO_BIT(device->ov_start_sector);
+ if (bit >= device->rs_total) {
+ device->ov_start_sector =
+ BM_BIT_TO_SECT(device->rs_total - 1);
+ device->rs_total = 1;
} else
- mdev->rs_total -= bit;
- mdev->ov_position = mdev->ov_start_sector;
+ device->rs_total -= bit;
+ device->ov_position = device->ov_start_sector;
}
- mdev->ov_left = mdev->rs_total;
+ device->ov_left = device->rs_total;
}
/**
* __drbd_set_state() - Set a new DRBD state
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @ns: new state.
* @flags: Flags
* @done: Optional completion, that will get completed after the after_state_ch() finished
* Caller needs to hold req_lock, and global_state_lock. Do not call directly.
*/
enum drbd_state_rv
-__drbd_set_state(struct drbd_conf *mdev, union drbd_state ns,
+__drbd_set_state(struct drbd_device *device, union drbd_state ns,
enum chg_state_flags flags, struct completion *done)
{
union drbd_state os;
struct after_state_chg_work *ascw;
bool did_remote, should_do_remote;
- os = drbd_read_state(mdev);
+ os = drbd_read_state(device);
- ns = sanitize_state(mdev, ns, &ssw);
+ ns = sanitize_state(device, ns, &ssw);
if (ns.i == os.i)
return SS_NOTHING_TO_DO;
/* pre-state-change checks ; only look at ns */
/* See drbd_state_sw_errors in drbd_strings.c */
- rv = is_valid_state(mdev, ns);
+ rv = is_valid_state(device, ns);
if (rv < SS_SUCCESS) {
/* If the old state was illegal as well, then let
this happen...*/
- if (is_valid_state(mdev, os) == rv)
- rv = is_valid_soft_transition(os, ns, mdev->tconn);
+ if (is_valid_state(device, os) == rv)
+ rv = is_valid_soft_transition(os, ns, first_peer_device(device)->connection);
} else
- rv = is_valid_soft_transition(os, ns, mdev->tconn);
+ rv = is_valid_soft_transition(os, ns, first_peer_device(device)->connection);
}
if (rv < SS_SUCCESS) {
if (flags & CS_VERBOSE)
- print_st_err(mdev, os, ns, rv);
+ print_st_err(device, os, ns, rv);
return rv;
}
- print_sanitize_warnings(mdev, ssw);
+ print_sanitize_warnings(device, ssw);
- drbd_pr_state_change(mdev, os, ns, flags);
+ drbd_pr_state_change(device, os, ns, flags);
/* Display changes to the susp* flags that where caused by the call to
sanitize_state(). Only display it here if we where not called from
_conn_request_state() */
if (!(flags & CS_DC_SUSP))
- conn_pr_state_change(mdev->tconn, os, ns, (flags & ~CS_DC_MASK) | CS_DC_SUSP);
+ conn_pr_state_change(first_peer_device(device)->connection, os, ns,
+ (flags & ~CS_DC_MASK) | CS_DC_SUSP);
/* if we are going -> D_FAILED or D_DISKLESS, grab one extra reference
* on the ldev here, to be sure the transition -> D_DISKLESS resp.
* after_state_ch works run, where we put_ldev again. */
if ((os.disk != D_FAILED && ns.disk == D_FAILED) ||
(os.disk != D_DISKLESS && ns.disk == D_DISKLESS))
- atomic_inc(&mdev->local_cnt);
+ atomic_inc(&device->local_cnt);
- did_remote = drbd_should_do_remote(mdev->state);
- mdev->state.i = ns.i;
- should_do_remote = drbd_should_do_remote(mdev->state);
- mdev->tconn->susp = ns.susp;
- mdev->tconn->susp_nod = ns.susp_nod;
- mdev->tconn->susp_fen = ns.susp_fen;
+ did_remote = drbd_should_do_remote(device->state);
+ device->state.i = ns.i;
+ should_do_remote = drbd_should_do_remote(device->state);
+ first_peer_device(device)->connection->susp = ns.susp;
+ first_peer_device(device)->connection->susp_nod = ns.susp_nod;
+ first_peer_device(device)->connection->susp_fen = ns.susp_fen;
/* put replicated vs not-replicated requests in seperate epochs */
if (did_remote != should_do_remote)
- start_new_tl_epoch(mdev->tconn);
+ start_new_tl_epoch(first_peer_device(device)->connection);
if (os.disk == D_ATTACHING && ns.disk >= D_NEGOTIATING)
- drbd_print_uuids(mdev, "attached to UUIDs");
+ drbd_print_uuids(device, "attached to UUIDs");
/* Wake up role changes, that were delayed because of connection establishing */
if (os.conn == C_WF_REPORT_PARAMS && ns.conn != C_WF_REPORT_PARAMS &&
- no_peer_wf_report_params(mdev->tconn))
- clear_bit(STATE_SENT, &mdev->tconn->flags);
+ no_peer_wf_report_params(first_peer_device(device)->connection))
+ clear_bit(STATE_SENT, &first_peer_device(device)->connection->flags);
- wake_up(&mdev->misc_wait);
- wake_up(&mdev->state_wait);
- wake_up(&mdev->tconn->ping_wait);
+ wake_up(&device->misc_wait);
+ wake_up(&device->state_wait);
+ wake_up(&first_peer_device(device)->connection->ping_wait);
/* Aborted verify run, or we reached the stop sector.
* Log the last position, unless end-of-device. */
if ((os.conn == C_VERIFY_S || os.conn == C_VERIFY_T) &&
ns.conn <= C_CONNECTED) {
- mdev->ov_start_sector =
- BM_BIT_TO_SECT(drbd_bm_bits(mdev) - mdev->ov_left);
- if (mdev->ov_left)
+ device->ov_start_sector =
+ BM_BIT_TO_SECT(drbd_bm_bits(device) - device->ov_left);
+ if (device->ov_left)
dev_info(DEV, "Online Verify reached sector %llu\n",
- (unsigned long long)mdev->ov_start_sector);
+ (unsigned long long)device->ov_start_sector);
}
if ((os.conn == C_PAUSED_SYNC_T || os.conn == C_PAUSED_SYNC_S) &&
(ns.conn == C_SYNC_TARGET || ns.conn == C_SYNC_SOURCE)) {
dev_info(DEV, "Syncer continues.\n");
- mdev->rs_paused += (long)jiffies
- -(long)mdev->rs_mark_time[mdev->rs_last_mark];
+ device->rs_paused += (long)jiffies
+ -(long)device->rs_mark_time[device->rs_last_mark];
if (ns.conn == C_SYNC_TARGET)
- mod_timer(&mdev->resync_timer, jiffies);
+ mod_timer(&device->resync_timer, jiffies);
}
if ((os.conn == C_SYNC_TARGET || os.conn == C_SYNC_SOURCE) &&
(ns.conn == C_PAUSED_SYNC_T || ns.conn == C_PAUSED_SYNC_S)) {
dev_info(DEV, "Resync suspended\n");
- mdev->rs_mark_time[mdev->rs_last_mark] = jiffies;
+ device->rs_mark_time[device->rs_last_mark] = jiffies;
}
if (os.conn == C_CONNECTED &&
unsigned long now = jiffies;
int i;
- set_ov_position(mdev, ns.conn);
- mdev->rs_start = now;
- mdev->rs_last_events = 0;
- mdev->rs_last_sect_ev = 0;
- mdev->ov_last_oos_size = 0;
- mdev->ov_last_oos_start = 0;
+ set_ov_position(device, ns.conn);
+ device->rs_start = now;
+ device->rs_last_events = 0;
+ device->rs_last_sect_ev = 0;
+ device->ov_last_oos_size = 0;
+ device->ov_last_oos_start = 0;
for (i = 0; i < DRBD_SYNC_MARKS; i++) {
- mdev->rs_mark_left[i] = mdev->ov_left;
- mdev->rs_mark_time[i] = now;
+ device->rs_mark_left[i] = device->ov_left;
+ device->rs_mark_time[i] = now;
}
- drbd_rs_controller_reset(mdev);
+ drbd_rs_controller_reset(device);
if (ns.conn == C_VERIFY_S) {
dev_info(DEV, "Starting Online Verify from sector %llu\n",
- (unsigned long long)mdev->ov_position);
- mod_timer(&mdev->resync_timer, jiffies);
+ (unsigned long long)device->ov_position);
+ mod_timer(&device->resync_timer, jiffies);
}
}
- if (get_ldev(mdev)) {
- u32 mdf = mdev->ldev->md.flags & ~(MDF_CONSISTENT|MDF_PRIMARY_IND|
+ if (get_ldev(device)) {
+ u32 mdf = device->ldev->md.flags & ~(MDF_CONSISTENT|MDF_PRIMARY_IND|
MDF_CONNECTED_IND|MDF_WAS_UP_TO_DATE|
MDF_PEER_OUT_DATED|MDF_CRASHED_PRIMARY);
mdf &= ~MDF_AL_CLEAN;
- if (test_bit(CRASHED_PRIMARY, &mdev->flags))
+ if (test_bit(CRASHED_PRIMARY, &device->flags))
mdf |= MDF_CRASHED_PRIMARY;
- if (mdev->state.role == R_PRIMARY ||
- (mdev->state.pdsk < D_INCONSISTENT && mdev->state.peer == R_PRIMARY))
+ if (device->state.role == R_PRIMARY ||
+ (device->state.pdsk < D_INCONSISTENT && device->state.peer == R_PRIMARY))
mdf |= MDF_PRIMARY_IND;
- if (mdev->state.conn > C_WF_REPORT_PARAMS)
+ if (device->state.conn > C_WF_REPORT_PARAMS)
mdf |= MDF_CONNECTED_IND;
- if (mdev->state.disk > D_INCONSISTENT)
+ if (device->state.disk > D_INCONSISTENT)
mdf |= MDF_CONSISTENT;
- if (mdev->state.disk > D_OUTDATED)
+ if (device->state.disk > D_OUTDATED)
mdf |= MDF_WAS_UP_TO_DATE;
- if (mdev->state.pdsk <= D_OUTDATED && mdev->state.pdsk >= D_INCONSISTENT)
+ if (device->state.pdsk <= D_OUTDATED && device->state.pdsk >= D_INCONSISTENT)
mdf |= MDF_PEER_OUT_DATED;
- if (mdf != mdev->ldev->md.flags) {
- mdev->ldev->md.flags = mdf;
- drbd_md_mark_dirty(mdev);
+ if (mdf != device->ldev->md.flags) {
+ device->ldev->md.flags = mdf;
+ drbd_md_mark_dirty(device);
}
if (os.disk < D_CONSISTENT && ns.disk >= D_CONSISTENT)
- drbd_set_ed_uuid(mdev, mdev->ldev->md.uuid[UI_CURRENT]);
- put_ldev(mdev);
+ drbd_set_ed_uuid(device, device->ldev->md.uuid[UI_CURRENT]);
+ put_ldev(device);
}
/* Peer was forced D_UP_TO_DATE & R_PRIMARY, consider to resync */
if (os.disk == D_INCONSISTENT && os.pdsk == D_INCONSISTENT &&
os.peer == R_SECONDARY && ns.peer == R_PRIMARY)
- set_bit(CONSIDER_RESYNC, &mdev->flags);
+ set_bit(CONSIDER_RESYNC, &device->flags);
/* Receiver should clean up itself */
if (os.conn != C_DISCONNECTING && ns.conn == C_DISCONNECTING)
- drbd_thread_stop_nowait(&mdev->tconn->receiver);
+ drbd_thread_stop_nowait(&first_peer_device(device)->connection->receiver);
/* Now the receiver finished cleaning up itself, it should die */
if (os.conn != C_STANDALONE && ns.conn == C_STANDALONE)
- drbd_thread_stop_nowait(&mdev->tconn->receiver);
+ drbd_thread_stop_nowait(&first_peer_device(device)->connection->receiver);
/* Upon network failure, we need to restart the receiver. */
if (os.conn > C_WF_CONNECTION &&
ns.conn <= C_TEAR_DOWN && ns.conn >= C_TIMEOUT)
- drbd_thread_restart_nowait(&mdev->tconn->receiver);
+ drbd_thread_restart_nowait(&first_peer_device(device)->connection->receiver);
/* Resume AL writing if we get a connection */
if (os.conn < C_CONNECTED && ns.conn >= C_CONNECTED) {
- drbd_resume_al(mdev);
- mdev->tconn->connect_cnt++;
+ drbd_resume_al(device);
+ first_peer_device(device)->connection->connect_cnt++;
}
/* remember last attach time so request_timer_fn() won't
* previously frozen IO */
if ((os.disk == D_ATTACHING || os.disk == D_NEGOTIATING) &&
ns.disk > D_NEGOTIATING)
- mdev->last_reattach_jif = jiffies;
+ device->last_reattach_jif = jiffies;
ascw = kmalloc(sizeof(*ascw), GFP_ATOMIC);
if (ascw) {
ascw->ns = ns;
ascw->flags = flags;
ascw->w.cb = w_after_state_ch;
- ascw->w.mdev = mdev;
+ ascw->w.device = device;
ascw->done = done;
- drbd_queue_work(&mdev->tconn->sender_work, &ascw->w);
+ drbd_queue_work(&first_peer_device(device)->connection->sender_work, &ascw->w);
} else {
dev_err(DEV, "Could not kmalloc an ascw\n");
}
{
struct after_state_chg_work *ascw =
container_of(w, struct after_state_chg_work, w);
- struct drbd_conf *mdev = w->mdev;
+ struct drbd_device *device = w->device;
- after_state_ch(mdev, ascw->os, ascw->ns, ascw->flags);
+ after_state_ch(device, ascw->os, ascw->ns, ascw->flags);
if (ascw->flags & CS_WAIT_COMPLETE) {
D_ASSERT(ascw->done != NULL);
complete(ascw->done);
return 0;
}
-static void abw_start_sync(struct drbd_conf *mdev, int rv)
+static void abw_start_sync(struct drbd_device *device, int rv)
{
if (rv) {
dev_err(DEV, "Writing the bitmap failed not starting resync.\n");
- _drbd_request_state(mdev, NS(conn, C_CONNECTED), CS_VERBOSE);
+ _drbd_request_state(device, NS(conn, C_CONNECTED), CS_VERBOSE);
return;
}
- switch (mdev->state.conn) {
+ switch (device->state.conn) {
case C_STARTING_SYNC_T:
- _drbd_request_state(mdev, NS(conn, C_WF_SYNC_UUID), CS_VERBOSE);
+ _drbd_request_state(device, NS(conn, C_WF_SYNC_UUID), CS_VERBOSE);
break;
case C_STARTING_SYNC_S:
- drbd_start_resync(mdev, C_SYNC_SOURCE);
+ drbd_start_resync(device, C_SYNC_SOURCE);
break;
}
}
-int drbd_bitmap_io_from_worker(struct drbd_conf *mdev,
- int (*io_fn)(struct drbd_conf *),
+int drbd_bitmap_io_from_worker(struct drbd_device *device,
+ int (*io_fn)(struct drbd_device *),
char *why, enum bm_flag flags)
{
int rv;
- D_ASSERT(current == mdev->tconn->worker.task);
+ D_ASSERT(current == first_peer_device(device)->connection->worker.task);
- /* open coded non-blocking drbd_suspend_io(mdev); */
- set_bit(SUSPEND_IO, &mdev->flags);
+ /* open coded non-blocking drbd_suspend_io(device); */
+ set_bit(SUSPEND_IO, &device->flags);
- drbd_bm_lock(mdev, why, flags);
- rv = io_fn(mdev);
- drbd_bm_unlock(mdev);
+ drbd_bm_lock(device, why, flags);
+ rv = io_fn(device);
+ drbd_bm_unlock(device);
- drbd_resume_io(mdev);
+ drbd_resume_io(device);
return rv;
}
/**
* after_state_ch() - Perform after state change actions that may sleep
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @os: old state.
* @ns: new state.
* @flags: Flags
*/
-static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
+static void after_state_ch(struct drbd_device *device, union drbd_state os,
union drbd_state ns, enum chg_state_flags flags)
{
struct sib_info sib;
sib.ns = ns;
if (os.conn != C_CONNECTED && ns.conn == C_CONNECTED) {
- clear_bit(CRASHED_PRIMARY, &mdev->flags);
- if (mdev->p_uuid)
- mdev->p_uuid[UI_FLAGS] &= ~((u64)2);
+ clear_bit(CRASHED_PRIMARY, &device->flags);
+ if (device->p_uuid)
+ device->p_uuid[UI_FLAGS] &= ~((u64)2);
}
/* Inform userspace about the change... */
- drbd_bcast_event(mdev, &sib);
+ drbd_bcast_event(device, &sib);
if (!(os.role == R_PRIMARY && os.disk < D_UP_TO_DATE && os.pdsk < D_UP_TO_DATE) &&
(ns.role == R_PRIMARY && ns.disk < D_UP_TO_DATE && ns.pdsk < D_UP_TO_DATE))
- drbd_khelper(mdev, "pri-on-incon-degr");
+ drbd_khelper(device, "pri-on-incon-degr");
/* Here we have the actions that are performed after a
state change. This function might sleep */
if (ns.susp_nod) {
- struct drbd_tconn *tconn = mdev->tconn;
+ struct drbd_connection *connection = first_peer_device(device)->connection;
enum drbd_req_event what = NOTHING;
- spin_lock_irq(&tconn->req_lock);
- if (os.conn < C_CONNECTED && conn_lowest_conn(tconn) >= C_CONNECTED)
+ spin_lock_irq(&connection->req_lock);
+ if (os.conn < C_CONNECTED && conn_lowest_conn(connection) >= C_CONNECTED)
what = RESEND;
if ((os.disk == D_ATTACHING || os.disk == D_NEGOTIATING) &&
- conn_lowest_disk(tconn) > D_NEGOTIATING)
+ conn_lowest_disk(connection) > D_NEGOTIATING)
what = RESTART_FROZEN_DISK_IO;
- if (tconn->susp_nod && what != NOTHING) {
- _tl_restart(tconn, what);
- _conn_request_state(tconn,
+ if (connection->susp_nod && what != NOTHING) {
+ _tl_restart(connection, what);
+ _conn_request_state(connection,
(union drbd_state) { { .susp_nod = 1 } },
(union drbd_state) { { .susp_nod = 0 } },
CS_VERBOSE);
}
- spin_unlock_irq(&tconn->req_lock);
+ spin_unlock_irq(&connection->req_lock);
}
if (ns.susp_fen) {
- struct drbd_tconn *tconn = mdev->tconn;
+ struct drbd_connection *connection = first_peer_device(device)->connection;
- spin_lock_irq(&tconn->req_lock);
- if (tconn->susp_fen && conn_lowest_conn(tconn) >= C_CONNECTED) {
+ spin_lock_irq(&connection->req_lock);
+ if (connection->susp_fen && conn_lowest_conn(connection) >= C_CONNECTED) {
/* case2: The connection was established again: */
- struct drbd_conf *odev;
+ struct drbd_device *odev;
int vnr;
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, odev, vnr)
+ idr_for_each_entry(&connection->volumes, odev, vnr)
clear_bit(NEW_CUR_UUID, &odev->flags);
rcu_read_unlock();
- _tl_restart(tconn, RESEND);
- _conn_request_state(tconn,
+ _tl_restart(connection, RESEND);
+ _conn_request_state(connection,
(union drbd_state) { { .susp_fen = 1 } },
(union drbd_state) { { .susp_fen = 0 } },
CS_VERBOSE);
}
- spin_unlock_irq(&tconn->req_lock);
+ spin_unlock_irq(&connection->req_lock);
}
/* Became sync source. With protocol >= 96, we still need to send out
* which is unexpected. */
if ((os.conn != C_SYNC_SOURCE && os.conn != C_PAUSED_SYNC_S) &&
(ns.conn == C_SYNC_SOURCE || ns.conn == C_PAUSED_SYNC_S) &&
- mdev->tconn->agreed_pro_version >= 96 && get_ldev(mdev)) {
- drbd_gen_and_send_sync_uuid(mdev);
- put_ldev(mdev);
+ first_peer_device(device)->connection->agreed_pro_version >= 96 && get_ldev(device)) {
+ drbd_gen_and_send_sync_uuid(device);
+ put_ldev(device);
}
/* Do not change the order of the if above and the two below... */
ns.pdsk > D_DISKLESS && ns.pdsk != D_UNKNOWN) { /* attach on the peer */
/* we probably will start a resync soon.
* make sure those things are properly reset. */
- mdev->rs_total = 0;
- mdev->rs_failed = 0;
- atomic_set(&mdev->rs_pending_cnt, 0);
- drbd_rs_cancel_all(mdev);
+ device->rs_total = 0;
+ device->rs_failed = 0;
+ atomic_set(&device->rs_pending_cnt, 0);
+ drbd_rs_cancel_all(device);
- drbd_send_uuids(mdev);
- drbd_send_state(mdev, ns);
+ drbd_send_uuids(device);
+ drbd_send_state(device, ns);
}
/* No point in queuing send_bitmap if we don't have a connection
* anymore, so check also the _current_ state, not only the new state
* at the time this work was queued. */
if (os.conn != C_WF_BITMAP_S && ns.conn == C_WF_BITMAP_S &&
- mdev->state.conn == C_WF_BITMAP_S)
- drbd_queue_bitmap_io(mdev, &drbd_send_bitmap, NULL,
+ device->state.conn == C_WF_BITMAP_S)
+ drbd_queue_bitmap_io(device, &drbd_send_bitmap, NULL,
"send_bitmap (WFBitMapS)",
BM_LOCKED_TEST_ALLOWED);
&& (ns.pdsk < D_INCONSISTENT ||
ns.pdsk == D_UNKNOWN ||
ns.pdsk == D_OUTDATED)) {
- if (get_ldev(mdev)) {
+ if (get_ldev(device)) {
if ((ns.role == R_PRIMARY || ns.peer == R_PRIMARY) &&
- mdev->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE) {
- if (drbd_suspended(mdev)) {
- set_bit(NEW_CUR_UUID, &mdev->flags);
+ device->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE) {
+ if (drbd_suspended(device)) {
+ set_bit(NEW_CUR_UUID, &device->flags);
} else {
- drbd_uuid_new_current(mdev);
- drbd_send_uuids(mdev);
+ drbd_uuid_new_current(device);
+ drbd_send_uuids(device);
}
}
- put_ldev(mdev);
+ put_ldev(device);
}
}
- if (ns.pdsk < D_INCONSISTENT && get_ldev(mdev)) {
+ if (ns.pdsk < D_INCONSISTENT && get_ldev(device)) {
if (os.peer == R_SECONDARY && ns.peer == R_PRIMARY &&
- mdev->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE) {
- drbd_uuid_new_current(mdev);
- drbd_send_uuids(mdev);
+ device->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE) {
+ drbd_uuid_new_current(device);
+ drbd_send_uuids(device);
}
/* D_DISKLESS Peer becomes secondary */
if (os.peer == R_PRIMARY && ns.peer == R_SECONDARY)
/* We may still be Primary ourselves.
* No harm done if the bitmap still changes,
* redirtied pages will follow later. */
- drbd_bitmap_io_from_worker(mdev, &drbd_bm_write,
+ drbd_bitmap_io_from_worker(device, &drbd_bm_write,
"demote diskless peer", BM_LOCKED_SET_ALLOWED);
- put_ldev(mdev);
+ put_ldev(device);
}
/* Write out all changed bits on demote.
* Though, no need to da that just yet
* if there is a resync going on still */
if (os.role == R_PRIMARY && ns.role == R_SECONDARY &&
- mdev->state.conn <= C_CONNECTED && get_ldev(mdev)) {
+ device->state.conn <= C_CONNECTED && get_ldev(device)) {
/* No changes to the bitmap expected this time, so assert that,
* even though no harm was done if it did change. */
- drbd_bitmap_io_from_worker(mdev, &drbd_bm_write,
+ drbd_bitmap_io_from_worker(device, &drbd_bm_write,
"demote", BM_LOCKED_TEST_ALLOWED);
- put_ldev(mdev);
+ put_ldev(device);
}
/* Last part of the attaching process ... */
if (ns.conn >= C_CONNECTED &&
os.disk == D_ATTACHING && ns.disk == D_NEGOTIATING) {
- drbd_send_sizes(mdev, 0, 0); /* to start sync... */
- drbd_send_uuids(mdev);
- drbd_send_state(mdev, ns);
+ drbd_send_sizes(device, 0, 0); /* to start sync... */
+ drbd_send_uuids(device);
+ drbd_send_state(device, ns);
}
/* We want to pause/continue resync, tell peer. */
if (ns.conn >= C_CONNECTED &&
((os.aftr_isp != ns.aftr_isp) ||
(os.user_isp != ns.user_isp)))
- drbd_send_state(mdev, ns);
+ drbd_send_state(device, ns);
/* In case one of the isp bits got set, suspend other devices. */
if ((!os.aftr_isp && !os.peer_isp && !os.user_isp) &&
(ns.aftr_isp || ns.peer_isp || ns.user_isp))
- suspend_other_sg(mdev);
+ suspend_other_sg(device);
/* Make sure the peer gets informed about eventual state
changes (ISP bits) while we were in WFReportParams. */
if (os.conn == C_WF_REPORT_PARAMS && ns.conn >= C_CONNECTED)
- drbd_send_state(mdev, ns);
+ drbd_send_state(device, ns);
if (os.conn != C_AHEAD && ns.conn == C_AHEAD)
- drbd_send_state(mdev, ns);
+ drbd_send_state(device, ns);
/* We are in the progress to start a full sync... */
if ((os.conn != C_STARTING_SYNC_T && ns.conn == C_STARTING_SYNC_T) ||
(os.conn != C_STARTING_SYNC_S && ns.conn == C_STARTING_SYNC_S))
/* no other bitmap changes expected during this phase */
- drbd_queue_bitmap_io(mdev,
+ drbd_queue_bitmap_io(device,
&drbd_bmio_set_n_write, &abw_start_sync,
"set_n_write from StartingSync", BM_LOCKED_TEST_ALLOWED);
* our cleanup here with the transition to D_DISKLESS.
* But is is still not save to dreference ldev here, since
* we might come from an failed Attach before ldev was set. */
- if (mdev->ldev) {
+ if (device->ldev) {
rcu_read_lock();
- eh = rcu_dereference(mdev->ldev->disk_conf)->on_io_error;
+ eh = rcu_dereference(device->ldev->disk_conf)->on_io_error;
rcu_read_unlock();
- was_io_error = test_and_clear_bit(WAS_IO_ERROR, &mdev->flags);
+ was_io_error = test_and_clear_bit(WAS_IO_ERROR, &device->flags);
if (was_io_error && eh == EP_CALL_HELPER)
- drbd_khelper(mdev, "local-io-error");
+ drbd_khelper(device, "local-io-error");
/* Immediately allow completion of all application IO,
* that waits for completion from the local disk,
* So aborting local requests may cause crashes,
* or even worse, silent data corruption.
*/
- if (test_and_clear_bit(FORCE_DETACH, &mdev->flags))
- tl_abort_disk_io(mdev);
+ if (test_and_clear_bit(FORCE_DETACH, &device->flags))
+ tl_abort_disk_io(device);
/* current state still has to be D_FAILED,
* there is only one way out: to D_DISKLESS,
* and that may only happen after our put_ldev below. */
- if (mdev->state.disk != D_FAILED)
+ if (device->state.disk != D_FAILED)
dev_err(DEV,
"ASSERT FAILED: disk is %s during detach\n",
- drbd_disk_str(mdev->state.disk));
+ drbd_disk_str(device->state.disk));
if (ns.conn >= C_CONNECTED)
- drbd_send_state(mdev, ns);
+ drbd_send_state(device, ns);
- drbd_rs_cancel_all(mdev);
+ drbd_rs_cancel_all(device);
/* In case we want to get something to stable storage still,
* this may be the last chance.
* Following put_ldev may transition to D_DISKLESS. */
- drbd_md_sync(mdev);
+ drbd_md_sync(device);
}
- put_ldev(mdev);
+ put_ldev(device);
}
- /* second half of local IO error, failure to attach,
- * or administrative detach,
- * after local_cnt references have reached zero again */
- if (os.disk != D_DISKLESS && ns.disk == D_DISKLESS) {
- /* We must still be diskless,
- * re-attach has to be serialized with this! */
- if (mdev->state.disk != D_DISKLESS)
- dev_err(DEV,
- "ASSERT FAILED: disk is %s while going diskless\n",
- drbd_disk_str(mdev->state.disk));
+ /* second half of local IO error, failure to attach,
+ * or administrative detach,
+ * after local_cnt references have reached zero again */
+ if (os.disk != D_DISKLESS && ns.disk == D_DISKLESS) {
+ /* We must still be diskless,
+ * re-attach has to be serialized with this! */
+ if (device->state.disk != D_DISKLESS)
+ dev_err(DEV,
+ "ASSERT FAILED: disk is %s while going diskless\n",
+ drbd_disk_str(device->state.disk));
if (ns.conn >= C_CONNECTED)
- drbd_send_state(mdev, ns);
+ drbd_send_state(device, ns);
/* corresponding get_ldev in __drbd_set_state
* this may finally trigger drbd_ldev_destroy. */
- put_ldev(mdev);
+ put_ldev(device);
}
/* Notify peer that I had a local IO error, and did not detached.. */
if (os.disk == D_UP_TO_DATE && ns.disk == D_INCONSISTENT && ns.conn >= C_CONNECTED)
- drbd_send_state(mdev, ns);
+ drbd_send_state(device, ns);
/* Disks got bigger while they were detached */
if (ns.disk > D_NEGOTIATING && ns.pdsk > D_NEGOTIATING &&
- test_and_clear_bit(RESYNC_AFTER_NEG, &mdev->flags)) {
+ test_and_clear_bit(RESYNC_AFTER_NEG, &device->flags)) {
if (ns.conn == C_CONNECTED)
- resync_after_online_grow(mdev);
+ resync_after_online_grow(device);
}
/* A resync finished or aborted, wake paused devices... */
if ((os.conn > C_CONNECTED && ns.conn <= C_CONNECTED) ||
(os.peer_isp && !ns.peer_isp) ||
(os.user_isp && !ns.user_isp))
- resume_next_sg(mdev);
+ resume_next_sg(device);
/* sync target done with resync. Explicitly notify peer, even though
* it should (at least for non-empty resyncs) already know itself. */
if (os.disk < D_UP_TO_DATE && os.conn >= C_SYNC_SOURCE && ns.conn == C_CONNECTED)
- drbd_send_state(mdev, ns);
+ drbd_send_state(device, ns);
/* Verify finished, or reached stop sector. Peer did not know about
* the stop sector, and we may even have changed the stop sector during
* verify to interrupt/stop early. Send the new state. */
if (os.conn == C_VERIFY_S && ns.conn == C_CONNECTED
- && verify_can_do_stop_sector(mdev))
- drbd_send_state(mdev, ns);
+ && verify_can_do_stop_sector(device))
+ drbd_send_state(device, ns);
/* This triggers bitmap writeout of potentially still unwritten pages
* if the resync finished cleanly, or aborted because of peer disk
* any bitmap writeout anymore.
* No harm done if some bits change during this phase.
*/
- if (os.conn > C_CONNECTED && ns.conn <= C_CONNECTED && get_ldev(mdev)) {
- drbd_queue_bitmap_io(mdev, &drbd_bm_write_copy_pages, NULL,
+ if (os.conn > C_CONNECTED && ns.conn <= C_CONNECTED && get_ldev(device)) {
+ drbd_queue_bitmap_io(device, &drbd_bm_write_copy_pages, NULL,
"write from resync_finished", BM_LOCKED_CHANGE_ALLOWED);
- put_ldev(mdev);
+ put_ldev(device);
}
if (ns.disk == D_DISKLESS &&
ns.conn == C_STANDALONE &&
ns.role == R_SECONDARY) {
if (os.aftr_isp != ns.aftr_isp)
- resume_next_sg(mdev);
+ resume_next_sg(device);
}
- drbd_md_sync(mdev);
+ drbd_md_sync(device);
}
struct after_conn_state_chg_work {
struct drbd_work w;
enum drbd_conns oc;
union drbd_state ns_min;
- union drbd_state ns_max; /* new, max state, over all mdevs */
+ union drbd_state ns_max; /* new, max state, over all devices */
enum chg_state_flags flags;
};
{
struct after_conn_state_chg_work *acscw =
container_of(w, struct after_conn_state_chg_work, w);
- struct drbd_tconn *tconn = w->tconn;
+ struct drbd_connection *connection = w->connection;
enum drbd_conns oc = acscw->oc;
union drbd_state ns_max = acscw->ns_max;
- struct drbd_conf *mdev;
+ struct drbd_device *device;
int vnr;
kfree(acscw);
/* Upon network configuration, we need to start the receiver */
if (oc == C_STANDALONE && ns_max.conn == C_UNCONNECTED)
- drbd_thread_start(&tconn->receiver);
+ drbd_thread_start(&connection->receiver);
if (oc == C_DISCONNECTING && ns_max.conn == C_STANDALONE) {
struct net_conf *old_conf;
- mutex_lock(&tconn->conf_update);
- old_conf = tconn->net_conf;
- tconn->my_addr_len = 0;
- tconn->peer_addr_len = 0;
- rcu_assign_pointer(tconn->net_conf, NULL);
- conn_free_crypto(tconn);
- mutex_unlock(&tconn->conf_update);
+ mutex_lock(&connection->conf_update);
+ old_conf = connection->net_conf;
+ connection->my_addr_len = 0;
+ connection->peer_addr_len = 0;
+ rcu_assign_pointer(connection->net_conf, NULL);
+ conn_free_crypto(connection);
+ mutex_unlock(&connection->conf_update);
synchronize_rcu();
kfree(old_conf);
/* case1: The outdate peer handler is successful: */
if (ns_max.pdsk <= D_OUTDATED) {
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr) {
- if (test_bit(NEW_CUR_UUID, &mdev->flags)) {
- drbd_uuid_new_current(mdev);
- clear_bit(NEW_CUR_UUID, &mdev->flags);
+ idr_for_each_entry(&connection->volumes, device, vnr) {
+ if (test_bit(NEW_CUR_UUID, &device->flags)) {
+ drbd_uuid_new_current(device);
+ clear_bit(NEW_CUR_UUID, &device->flags);
}
}
rcu_read_unlock();
- spin_lock_irq(&tconn->req_lock);
- _tl_restart(tconn, CONNECTION_LOST_WHILE_PENDING);
- _conn_request_state(tconn,
+ spin_lock_irq(&connection->req_lock);
+ _tl_restart(connection, CONNECTION_LOST_WHILE_PENDING);
+ _conn_request_state(connection,
(union drbd_state) { { .susp_fen = 1 } },
(union drbd_state) { { .susp_fen = 0 } },
CS_VERBOSE);
- spin_unlock_irq(&tconn->req_lock);
+ spin_unlock_irq(&connection->req_lock);
}
}
- kref_put(&tconn->kref, &conn_destroy);
+ kref_put(&connection->kref, &conn_destroy);
- conn_md_sync(tconn);
+ conn_md_sync(connection);
return 0;
}
-void conn_old_common_state(struct drbd_tconn *tconn, union drbd_state *pcs, enum chg_state_flags *pf)
+void conn_old_common_state(struct drbd_connection *connection, union drbd_state *pcs, enum chg_state_flags *pf)
{
enum chg_state_flags flags = ~0;
- struct drbd_conf *mdev;
+ struct drbd_device *device;
int vnr, first_vol = 1;
union drbd_dev_state os, cs = {
{ .role = R_SECONDARY,
.peer = R_UNKNOWN,
- .conn = tconn->cstate,
+ .conn = connection->cstate,
.disk = D_DISKLESS,
.pdsk = D_UNKNOWN,
} };
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr) {
- os = mdev->state;
+ idr_for_each_entry(&connection->volumes, device, vnr) {
+ os = device->state;
if (first_vol) {
cs = os;
}
static enum drbd_state_rv
-conn_is_valid_transition(struct drbd_tconn *tconn, union drbd_state mask, union drbd_state val,
+conn_is_valid_transition(struct drbd_connection *connection, union drbd_state mask, union drbd_state val,
enum chg_state_flags flags)
{
enum drbd_state_rv rv = SS_SUCCESS;
union drbd_state ns, os;
- struct drbd_conf *mdev;
+ struct drbd_device *device;
int vnr;
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr) {
- os = drbd_read_state(mdev);
- ns = sanitize_state(mdev, apply_mask_val(os, mask, val), NULL);
+ idr_for_each_entry(&connection->volumes, device, vnr) {
+ os = drbd_read_state(device);
+ ns = sanitize_state(device, apply_mask_val(os, mask, val), NULL);
if (flags & CS_IGN_OUTD_FAIL && ns.disk == D_OUTDATED && os.disk < D_OUTDATED)
ns.disk = os.disk;
break;
if (!(flags & CS_HARD)) {
- rv = is_valid_state(mdev, ns);
+ rv = is_valid_state(device, ns);
if (rv < SS_SUCCESS) {
- if (is_valid_state(mdev, os) == rv)
- rv = is_valid_soft_transition(os, ns, tconn);
+ if (is_valid_state(device, os) == rv)
+ rv = is_valid_soft_transition(os, ns, connection);
} else
- rv = is_valid_soft_transition(os, ns, tconn);
+ rv = is_valid_soft_transition(os, ns, connection);
}
if (rv < SS_SUCCESS)
break;
rcu_read_unlock();
if (rv < SS_SUCCESS && flags & CS_VERBOSE)
- print_st_err(mdev, os, ns, rv);
+ print_st_err(device, os, ns, rv);
return rv;
}
void
-conn_set_state(struct drbd_tconn *tconn, union drbd_state mask, union drbd_state val,
+conn_set_state(struct drbd_connection *connection, union drbd_state mask, union drbd_state val,
union drbd_state *pns_min, union drbd_state *pns_max, enum chg_state_flags flags)
{
union drbd_state ns, os, ns_max = { };
.disk = D_MASK,
.pdsk = D_MASK
} };
- struct drbd_conf *mdev;
+ struct drbd_device *device;
enum drbd_state_rv rv;
int vnr, number_of_volumes = 0;
/* remember last connect time so request_timer_fn() won't
* kill newly established sessions while we are still trying to thaw
* previously frozen IO */
- if (tconn->cstate != C_WF_REPORT_PARAMS && val.conn == C_WF_REPORT_PARAMS)
- tconn->last_reconnect_jif = jiffies;
+ if (connection->cstate != C_WF_REPORT_PARAMS && val.conn == C_WF_REPORT_PARAMS)
+ connection->last_reconnect_jif = jiffies;
- tconn->cstate = val.conn;
+ connection->cstate = val.conn;
}
rcu_read_lock();
- idr_for_each_entry(&tconn->volumes, mdev, vnr) {
+ idr_for_each_entry(&connection->volumes, device, vnr) {
number_of_volumes++;
- os = drbd_read_state(mdev);
+ os = drbd_read_state(device);
ns = apply_mask_val(os, mask, val);
- ns = sanitize_state(mdev, ns, NULL);
+ ns = sanitize_state(device, ns, NULL);
if (flags & CS_IGN_OUTD_FAIL && ns.disk == D_OUTDATED && os.disk < D_OUTDATED)
ns.disk = os.disk;
- rv = __drbd_set_state(mdev, ns, flags, NULL);
+ rv = __drbd_set_state(device, ns, flags, NULL);
if (rv < SS_SUCCESS)
BUG();
- ns.i = mdev->state.i;
+ ns.i = device->state.i;
ns_max.role = max_role(ns.role, ns_max.role);
ns_max.peer = max_role(ns.peer, ns_max.peer);
ns_max.conn = max_t(enum drbd_conns, ns.conn, ns_max.conn);
} };
}
- ns_min.susp = ns_max.susp = tconn->susp;
- ns_min.susp_nod = ns_max.susp_nod = tconn->susp_nod;
- ns_min.susp_fen = ns_max.susp_fen = tconn->susp_fen;
+ ns_min.susp = ns_max.susp = connection->susp;
+ ns_min.susp_nod = ns_max.susp_nod = connection->susp_nod;
+ ns_min.susp_fen = ns_max.susp_fen = connection->susp_fen;
*pns_min = ns_min;
*pns_max = ns_max;
}
static enum drbd_state_rv
-_conn_rq_cond(struct drbd_tconn *tconn, union drbd_state mask, union drbd_state val)
+_conn_rq_cond(struct drbd_connection *connection, union drbd_state mask, union drbd_state val)
{
enum drbd_state_rv rv;
- if (test_and_clear_bit(CONN_WD_ST_CHG_OKAY, &tconn->flags))
+ if (test_and_clear_bit(CONN_WD_ST_CHG_OKAY, &connection->flags))
return SS_CW_SUCCESS;
- if (test_and_clear_bit(CONN_WD_ST_CHG_FAIL, &tconn->flags))
+ if (test_and_clear_bit(CONN_WD_ST_CHG_FAIL, &connection->flags))
return SS_CW_FAILED_BY_PEER;
- rv = conn_is_valid_transition(tconn, mask, val, 0);
- if (rv == SS_SUCCESS && tconn->cstate == C_WF_REPORT_PARAMS)
+ rv = conn_is_valid_transition(connection, mask, val, 0);
+ if (rv == SS_SUCCESS && connection->cstate == C_WF_REPORT_PARAMS)
rv = SS_UNKNOWN_ERROR; /* continue waiting */
return rv;
}
enum drbd_state_rv
-_conn_request_state(struct drbd_tconn *tconn, union drbd_state mask, union drbd_state val,
+_conn_request_state(struct drbd_connection *connection, union drbd_state mask, union drbd_state val,
enum chg_state_flags flags)
{
enum drbd_state_rv rv = SS_SUCCESS;
struct after_conn_state_chg_work *acscw;
- enum drbd_conns oc = tconn->cstate;
+ enum drbd_conns oc = connection->cstate;
union drbd_state ns_max, ns_min, os;
bool have_mutex = false;
goto abort;
}
- rv = conn_is_valid_transition(tconn, mask, val, flags);
+ rv = conn_is_valid_transition(connection, mask, val, flags);
if (rv < SS_SUCCESS)
goto abort;
/* This will be a cluster-wide state change.
* Need to give up the spinlock, grab the mutex,
* then send the state change request, ... */
- spin_unlock_irq(&tconn->req_lock);
- mutex_lock(&tconn->cstate_mutex);
+ spin_unlock_irq(&connection->req_lock);
+ mutex_lock(&connection->cstate_mutex);
have_mutex = true;
- set_bit(CONN_WD_ST_CHG_REQ, &tconn->flags);
- if (conn_send_state_req(tconn, mask, val)) {
+ set_bit(CONN_WD_ST_CHG_REQ, &connection->flags);
+ if (conn_send_state_req(connection, mask, val)) {
/* sending failed. */
- clear_bit(CONN_WD_ST_CHG_REQ, &tconn->flags);
+ clear_bit(CONN_WD_ST_CHG_REQ, &connection->flags);
rv = SS_CW_FAILED_BY_PEER;
/* need to re-aquire the spin lock, though */
goto abort_unlocked;
}
if (val.conn == C_DISCONNECTING)
- set_bit(DISCONNECT_SENT, &tconn->flags);
+ set_bit(DISCONNECT_SENT, &connection->flags);
/* ... and re-aquire the spinlock.
* If _conn_rq_cond() returned >= SS_SUCCESS, we must call
* conn_set_state() within the same spinlock. */
- spin_lock_irq(&tconn->req_lock);
- wait_event_lock_irq(tconn->ping_wait,
- (rv = _conn_rq_cond(tconn, mask, val)),
- tconn->req_lock);
- clear_bit(CONN_WD_ST_CHG_REQ, &tconn->flags);
+ spin_lock_irq(&connection->req_lock);
+ wait_event_lock_irq(connection->ping_wait,
+ (rv = _conn_rq_cond(connection, mask, val)),
+ connection->req_lock);
+ clear_bit(CONN_WD_ST_CHG_REQ, &connection->flags);
if (rv < SS_SUCCESS)
goto abort;
}
- conn_old_common_state(tconn, &os, &flags);
+ conn_old_common_state(connection, &os, &flags);
flags |= CS_DC_SUSP;
- conn_set_state(tconn, mask, val, &ns_min, &ns_max, flags);
- conn_pr_state_change(tconn, os, ns_max, flags);
+ conn_set_state(connection, mask, val, &ns_min, &ns_max, flags);
+ conn_pr_state_change(connection, os, ns_max, flags);
acscw = kmalloc(sizeof(*acscw), GFP_ATOMIC);
if (acscw) {
acscw->ns_max = ns_max;
acscw->flags = flags;
acscw->w.cb = w_after_conn_state_ch;
- kref_get(&tconn->kref);
- acscw->w.tconn = tconn;
- drbd_queue_work(&tconn->sender_work, &acscw->w);
+ kref_get(&connection->kref);
+ acscw->w.connection = connection;
+ drbd_queue_work(&connection->sender_work, &acscw->w);
} else {
- conn_err(tconn, "Could not kmalloc an acscw\n");
+ conn_err(connection, "Could not kmalloc an acscw\n");
}
abort:
if (have_mutex) {
/* mutex_unlock() "... must not be used in interrupt context.",
* so give up the spinlock, then re-aquire it */
- spin_unlock_irq(&tconn->req_lock);
+ spin_unlock_irq(&connection->req_lock);
abort_unlocked:
- mutex_unlock(&tconn->cstate_mutex);
- spin_lock_irq(&tconn->req_lock);
+ mutex_unlock(&connection->cstate_mutex);
+ spin_lock_irq(&connection->req_lock);
}
if (rv < SS_SUCCESS && flags & CS_VERBOSE) {
- conn_err(tconn, "State change failed: %s\n", drbd_set_st_err_str(rv));
- conn_err(tconn, " mask = 0x%x val = 0x%x\n", mask.i, val.i);
- conn_err(tconn, " old_conn:%s wanted_conn:%s\n", drbd_conn_str(oc), drbd_conn_str(val.conn));
+ conn_err(connection, "State change failed: %s\n", drbd_set_st_err_str(rv));
+ conn_err(connection, " mask = 0x%x val = 0x%x\n", mask.i, val.i);
+ conn_err(connection, " old_conn:%s wanted_conn:%s\n", drbd_conn_str(oc), drbd_conn_str(val.conn));
}
return rv;
}
enum drbd_state_rv
-conn_request_state(struct drbd_tconn *tconn, union drbd_state mask, union drbd_state val,
+conn_request_state(struct drbd_connection *connection, union drbd_state mask, union drbd_state val,
enum chg_state_flags flags)
{
enum drbd_state_rv rv;
- spin_lock_irq(&tconn->req_lock);
- rv = _conn_request_state(tconn, mask, val, flags);
- spin_unlock_irq(&tconn->req_lock);
+ spin_lock_irq(&connection->req_lock);
+ rv = _conn_request_state(connection, mask, val, flags);
+ spin_unlock_irq(&connection->req_lock);
return rv;
}
projects / deliverable / linux.git / blobdiff