* THE SOFTWARE.
*/
+#include "qemu/osdep.h"
#include "sysemu/block-backend.h"
#include "sysemu/blockdev.h"
#include "hw/block/block.h"
#include "trace.h"
#include "sysemu/arch_init.h"
+static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states =
+ QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states);
+
static const char *const if_name[IF_COUNT] = {
[IF_NONE] = "none",
[IF_IDE] = "ide",
BlockDriverState *bs;
} BDRVPutRefBH;
-static void bdrv_put_ref_bh(void *opaque)
-{
- BDRVPutRefBH *s = opaque;
-
- bdrv_unref(s->bs);
- qemu_bh_delete(s->bh);
- g_free(s);
-}
-
-/*
- * Release a BDS reference in a BH
- *
- * It is not safe to use bdrv_unref() from a callback function when the callers
- * still need the BlockDriverState. In such cases we schedule a BH to release
- * the reference.
- */
-static void bdrv_put_ref_bh_schedule(BlockDriverState *bs)
-{
- BDRVPutRefBH *s;
-
- s = g_new(BDRVPutRefBH, 1);
- s->bh = qemu_bh_new(bdrv_put_ref_bh, s);
- s->bs = bs;
- qemu_bh_schedule(s->bh);
-}
-
static int parse_block_error_action(const char *buf, bool is_read, Error **errp)
{
if (!strcmp(buf, "ignore")) {
}
}
-static bool check_throttle_config(ThrottleConfig *cfg, Error **errp)
+static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals,
+ Error **errp)
{
- if (throttle_conflicting(cfg)) {
- error_setg(errp, "bps/iops/max total values and read/write values"
- " cannot be used at the same time");
- return false;
- }
+ const QListEntry *entry;
+ for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) {
+ switch (qobject_type(entry->value)) {
+
+ case QTYPE_QSTRING: {
+ unsigned long long length;
+ const char *str = qstring_get_str(qobject_to_qstring(entry->value));
+ if (parse_uint_full(str, &length, 10) == 0 &&
+ length > 0 && length <= UINT_MAX) {
+ block_acct_add_interval(stats, (unsigned) length);
+ } else {
+ error_setg(errp, "Invalid interval length: %s", str);
+ return false;
+ }
+ break;
+ }
- if (!throttle_is_valid(cfg)) {
- error_setg(errp, "bps/iops/maxs values must be 0 or greater");
- return false;
- }
+ case QTYPE_QINT: {
+ int64_t length = qint_get_int(qobject_to_qint(entry->value));
+ if (length > 0 && length <= UINT_MAX) {
+ block_acct_add_interval(stats, (unsigned) length);
+ } else {
+ error_setg(errp, "Invalid interval length: %" PRId64, length);
+ return false;
+ }
+ break;
+ }
- if (throttle_max_is_missing_limit(cfg)) {
- error_setg(errp, "bps_max/iops_max require corresponding"
- " bps/iops values");
- return false;
+ default:
+ error_setg(errp, "The specification of stats-intervals is invalid");
+ return false;
+ }
}
-
return true;
}
}
}
- if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true)) {
- *bdrv_flags |= BDRV_O_CACHE_WB;
- }
- if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_DIRECT, false)) {
- *bdrv_flags |= BDRV_O_NOCACHE;
- }
- if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, false)) {
- *bdrv_flags |= BDRV_O_NO_FLUSH;
- }
-
if ((aio = qemu_opt_get(opts, "aio")) != NULL) {
if (!strcmp(aio, "native")) {
*bdrv_flags |= BDRV_O_NATIVE_AIO;
}
if (throttle_cfg) {
- memset(throttle_cfg, 0, sizeof(*throttle_cfg));
+ throttle_config_init(throttle_cfg);
throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg =
qemu_opt_get_number(opts, "throttling.bps-total", 0);
throttle_cfg->buckets[THROTTLE_BPS_READ].avg =
throttle_cfg->buckets[THROTTLE_OPS_WRITE].max =
qemu_opt_get_number(opts, "throttling.iops-write-max", 0);
+ throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length =
+ qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1);
+ throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length =
+ qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1);
+ throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length =
+ qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1);
+ throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length =
+ qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1);
+ throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length =
+ qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1);
+ throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length =
+ qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1);
+
throttle_cfg->op_size =
qemu_opt_get_number(opts, "throttling.iops-size", 0);
- if (!check_throttle_config(throttle_cfg, errp)) {
+ if (!throttle_is_valid(throttle_cfg, errp)) {
return;
}
}
*detect_zeroes =
qapi_enum_parse(BlockdevDetectZeroesOptions_lookup,
qemu_opt_get(opts, "detect-zeroes"),
- BLOCKDEV_DETECT_ZEROES_OPTIONS_MAX,
+ BLOCKDEV_DETECT_ZEROES_OPTIONS__MAX,
BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF,
&local_error);
if (local_error) {
const char *buf;
int bdrv_flags = 0;
int on_read_error, on_write_error;
+ bool account_invalid, account_failed;
BlockBackend *blk;
BlockDriverState *bs;
ThrottleConfig cfg;
int snapshot = 0;
Error *error = NULL;
QemuOpts *opts;
+ QDict *interval_dict = NULL;
+ QList *interval_list = NULL;
const char *id;
- bool has_driver_specific_opts;
BlockdevDetectZeroesOptions detect_zeroes =
BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF;
const char *throttling_group = NULL;
qdict_del(bs_opts, "id");
}
- has_driver_specific_opts = !!qdict_size(bs_opts);
-
/* extract parameters */
snapshot = qemu_opt_get_bool(opts, "snapshot", 0);
+ account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true);
+ account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true);
+
+ qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals.");
+ qdict_array_split(interval_dict, &interval_list);
+
+ if (qdict_size(interval_dict) != 0) {
+ error_setg(errp, "Invalid option stats-intervals.%s",
+ qdict_first(interval_dict)->key);
+ goto early_err;
+ }
+
extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg,
&detect_zeroes, &error);
if (error) {
}
if (snapshot) {
- /* always use cache=unsafe with snapshot */
- bdrv_flags &= ~BDRV_O_CACHE_MASK;
- bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH);
+ bdrv_flags |= BDRV_O_SNAPSHOT;
}
/* init */
- if ((!file || !*file) && !has_driver_specific_opts) {
+ if ((!file || !*file) && !qdict_size(bs_opts)) {
BlockBackendRootState *blk_rs;
blk = blk_new(qemu_opts_id(opts), errp);
file = NULL;
}
+ /* bdrv_open() defaults to the values in bdrv_flags (for compatibility
+ * with other callers) rather than what we want as the real defaults.
+ * Apply the defaults here instead. */
+ qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_WB, "on");
+ qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off");
+ qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off");
+
+ if (snapshot) {
+ /* always use cache=unsafe with snapshot */
+ qdict_put(bs_opts, BDRV_OPT_CACHE_WB, qstring_from_str("on"));
+ qdict_put(bs_opts, BDRV_OPT_CACHE_DIRECT, qstring_from_str("off"));
+ qdict_put(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, qstring_from_str("on"));
+ }
+
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ bdrv_flags |= BDRV_O_INACTIVE;
+ }
+
blk = blk_new_open(qemu_opts_id(opts), file, NULL, bs_opts, bdrv_flags,
errp);
if (!blk) {
if (bdrv_key_required(bs)) {
autostart = 0;
}
+
+ block_acct_init(blk_get_stats(blk), account_invalid, account_failed);
+
+ if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) {
+ blk_unref(blk);
+ blk = NULL;
+ goto err_no_bs_opts;
+ }
}
blk_set_on_error(blk, on_read_error, on_write_error);
err_no_bs_opts:
qemu_opts_del(opts);
+ QDECREF(interval_dict);
+ QDECREF(interval_list);
return blk;
early_err:
qemu_opts_del(opts);
+ QDECREF(interval_dict);
+ QDECREF(interval_list);
err_no_opts:
QDECREF(bs_opts);
return NULL;
goto fail;
}
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ bdrv_flags |= BDRV_O_INACTIVE;
+ }
+
bs = NULL;
ret = bdrv_open(&bs, NULL, NULL, bs_opts, bdrv_flags, errp);
if (ret < 0) {
return NULL;
}
+void blockdev_close_all_bdrv_states(void)
+{
+ BlockDriverState *bs, *next_bs;
+
+ QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) {
+ AioContext *ctx = bdrv_get_aio_context(bs);
+
+ aio_context_acquire(ctx);
+ bdrv_unref(bs);
+ aio_context_release(ctx);
+ }
+}
+
static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to,
Error **errp)
{
}
}
-static void blockdev_do_action(TransactionActionKind type, void *data,
- Error **errp)
+static void blockdev_do_action(TransactionAction *action, Error **errp)
{
- TransactionAction action;
TransactionActionList list;
- action.type = type;
- action.u.data = data;
- list.value = &action;
+ list.value = action;
list.next = NULL;
- qmp_transaction(&list, errp);
+ qmp_transaction(&list, false, NULL, errp);
}
void qmp_blockdev_snapshot_sync(bool has_device, const char *device,
.has_mode = has_mode,
.mode = mode,
};
- blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC,
- &snapshot, errp);
+ TransactionAction action = {
+ .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC,
+ .u.blockdev_snapshot_sync = &snapshot,
+ };
+ blockdev_do_action(&action, errp);
}
void qmp_blockdev_snapshot(const char *node, const char *overlay,
.node = (char *) node,
.overlay = (char *) overlay
};
-
- blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT,
- &snapshot_data, errp);
+ TransactionAction action = {
+ .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT,
+ .u.blockdev_snapshot = &snapshot_data,
+ };
+ blockdev_do_action(&action, errp);
}
void qmp_blockdev_snapshot_internal_sync(const char *device,
.device = (char *) device,
.name = (char *) name
};
-
- blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC,
- &snapshot, errp);
+ TransactionAction action = {
+ .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC,
+ .u.blockdev_snapshot_internal_sync = &snapshot,
+ };
+ blockdev_do_action(&action, errp);
}
SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device,
*
* @action: QAPI-defined enum identifying which Action to perform.
* @ops: Table of ActionOps this Action can perform.
+ * @block_job_txn: Transaction which this action belongs to.
* @entry: List membership for all Actions in this Transaction.
*
* This structure must be arranged as first member in a subclassed type,
struct BlkActionState {
TransactionAction *action;
const BlkActionOps *ops;
+ BlockJobTxn *block_job_txn;
+ TransactionProperties *txn_props;
QSIMPLEQ_ENTRY(BlkActionState) entry;
};
bool created;
} InternalSnapshotState;
+
+static int action_check_completion_mode(BlkActionState *s, Error **errp)
+{
+ if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) {
+ error_setg(errp,
+ "Action '%s' does not support Transaction property "
+ "completion-mode = %s",
+ TransactionActionKind_lookup[s->action->type],
+ ActionCompletionMode_lookup[s->txn_props->completion_mode]);
+ return -1;
+ }
+ return 0;
+}
+
static void internal_snapshot_prepare(BlkActionState *common,
Error **errp)
{
name = internal->name;
/* 2. check for validation */
+ if (action_check_completion_mode(common, errp) < 0) {
+ return;
+ }
+
blk = blk_by_name(device);
if (!blk) {
error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
}
if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) {
- error_report("Failed to delete snapshot with id '%s' and name '%s' on "
- "device '%s' in abort: %s",
- sn->id_str,
- sn->name,
- bdrv_get_device_name(bs),
- error_get_pretty(local_error));
- error_free(local_error);
+ error_reportf_err(local_error,
+ "Failed to delete snapshot with id '%s' and "
+ "name '%s' on device '%s' in abort: ",
+ sn->id_str, sn->name,
+ bdrv_get_device_name(bs));
}
}
}
/* start processing */
+ if (action_check_completion_mode(common, errp) < 0) {
+ return;
+ }
+
state->old_bs = bdrv_lookup_bs(device, node_name, errp);
if (!state->old_bs) {
return;
BlockJob *job;
} DriveBackupState;
+static void do_drive_backup(const char *device, const char *target,
+ bool has_format, const char *format,
+ enum MirrorSyncMode sync,
+ bool has_mode, enum NewImageMode mode,
+ bool has_speed, int64_t speed,
+ bool has_bitmap, const char *bitmap,
+ bool has_on_source_error,
+ BlockdevOnError on_source_error,
+ bool has_on_target_error,
+ BlockdevOnError on_target_error,
+ BlockJobTxn *txn, Error **errp);
+
static void drive_backup_prepare(BlkActionState *common, Error **errp)
{
DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
bdrv_drained_begin(blk_bs(blk));
state->bs = blk_bs(blk);
- qmp_drive_backup(backup->device, backup->target,
- backup->has_format, backup->format,
- backup->sync,
- backup->has_mode, backup->mode,
- backup->has_speed, backup->speed,
- backup->has_bitmap, backup->bitmap,
- backup->has_on_source_error, backup->on_source_error,
- backup->has_on_target_error, backup->on_target_error,
- &local_err);
+ do_drive_backup(backup->device, backup->target,
+ backup->has_format, backup->format,
+ backup->sync,
+ backup->has_mode, backup->mode,
+ backup->has_speed, backup->speed,
+ backup->has_bitmap, backup->bitmap,
+ backup->has_on_source_error, backup->on_source_error,
+ backup->has_on_target_error, backup->on_target_error,
+ common->block_job_txn, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
AioContext *aio_context;
} BlockdevBackupState;
+static void do_blockdev_backup(const char *device, const char *target,
+ enum MirrorSyncMode sync,
+ bool has_speed, int64_t speed,
+ bool has_on_source_error,
+ BlockdevOnError on_source_error,
+ bool has_on_target_error,
+ BlockdevOnError on_target_error,
+ BlockJobTxn *txn, Error **errp);
+
static void blockdev_backup_prepare(BlkActionState *common, Error **errp)
{
BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
state->bs = blk_bs(blk);
bdrv_drained_begin(state->bs);
- qmp_blockdev_backup(backup->device, backup->target,
- backup->sync,
- backup->has_speed, backup->speed,
- backup->has_on_source_error, backup->on_source_error,
- backup->has_on_target_error, backup->on_target_error,
- &local_err);
+ do_blockdev_backup(backup->device, backup->target,
+ backup->sync,
+ backup->has_speed, backup->speed,
+ backup->has_on_source_error, backup->on_source_error,
+ backup->has_on_target_error, backup->on_target_error,
+ common->block_job_txn, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState,
common, common);
+ if (action_check_completion_mode(common, errp) < 0) {
+ return;
+ }
+
action = common->action->u.block_dirty_bitmap_add;
/* AIO context taken and released within qmp_block_dirty_bitmap_add */
qmp_block_dirty_bitmap_add(action->node, action->name,
common, common);
BlockDirtyBitmap *action;
+ if (action_check_completion_mode(common, errp) < 0) {
+ return;
+ }
+
action = common->action->u.block_dirty_bitmap_clear;
state->bitmap = block_dirty_bitmap_lookup(action->node,
action->name,
.prepare = external_snapshot_prepare,
.commit = external_snapshot_commit,
.abort = external_snapshot_abort,
+ .clean = external_snapshot_clean,
},
[TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = {
.instance_size = sizeof(ExternalSnapshotState),
}
};
+/**
+ * Allocate a TransactionProperties structure if necessary, and fill
+ * that structure with desired defaults if they are unset.
+ */
+static TransactionProperties *get_transaction_properties(
+ TransactionProperties *props)
+{
+ if (!props) {
+ props = g_new0(TransactionProperties, 1);
+ }
+
+ if (!props->has_completion_mode) {
+ props->has_completion_mode = true;
+ props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL;
+ }
+
+ return props;
+}
+
/*
* 'Atomic' group operations. The operations are performed as a set, and if
* any fail then we roll back all operations in the group.
*/
-void qmp_transaction(TransactionActionList *dev_list, Error **errp)
+void qmp_transaction(TransactionActionList *dev_list,
+ bool has_props,
+ struct TransactionProperties *props,
+ Error **errp)
{
TransactionActionList *dev_entry = dev_list;
+ BlockJobTxn *block_job_txn = NULL;
BlkActionState *state, *next;
Error *local_err = NULL;
QSIMPLEQ_HEAD(snap_bdrv_states, BlkActionState) snap_bdrv_states;
QSIMPLEQ_INIT(&snap_bdrv_states);
+ /* Does this transaction get canceled as a group on failure?
+ * If not, we don't really need to make a BlockJobTxn.
+ */
+ props = get_transaction_properties(props);
+ if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) {
+ block_job_txn = block_job_txn_new();
+ }
+
/* drain all i/o before any operations */
bdrv_drain_all();
state = g_malloc0(ops->instance_size);
state->ops = ops;
state->action = dev_info;
+ state->block_job_txn = block_job_txn;
+ state->txn_props = props;
QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry);
state->ops->prepare(state, &local_err);
}
g_free(state);
}
+ if (!has_props) {
+ qapi_free_TransactionProperties(props);
+ }
+ block_job_txn_unref(block_job_txn);
}
void qmp_eject(const char *device, bool has_force, bool force, Error **errp)
return;
}
- qmp_blockdev_remove_medium(device, errp);
+ qmp_x_blockdev_remove_medium(device, errp);
}
void qmp_block_passwd(bool has_device, const char *device,
return;
}
+ if (!blk_dev_has_tray(blk)) {
+ /* Ignore this command on tray-less devices */
+ return;
+ }
+
if (blk_dev_is_tray_open(blk)) {
return;
}
return;
}
+ if (!blk_dev_has_tray(blk)) {
+ /* Ignore this command on tray-less devices */
+ return;
+ }
+
if (!blk_dev_is_tray_open(blk)) {
return;
}
blk_dev_change_media_cb(blk, true);
}
-void qmp_blockdev_remove_medium(const char *device, Error **errp)
+void qmp_x_blockdev_remove_medium(const char *device, Error **errp)
{
BlockBackend *blk;
BlockDriverState *bs;
return;
}
- if (has_device && !blk_dev_is_tray_open(blk)) {
+ if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) {
error_setg(errp, "Tray of device '%s' is not open", device);
return;
}
/* This follows the convention established by bdrv_make_anon() */
if (bs->device_list.tqe_prev) {
- QTAILQ_REMOVE(&bdrv_states, bs, device_list);
- bs->device_list.tqe_prev = NULL;
+ bdrv_device_remove(bs);
}
blk_remove_bs(blk);
+ if (!blk_dev_has_tray(blk)) {
+ /* For tray-less devices, blockdev-open-tray is a no-op (or may not be
+ * called at all); therefore, the medium needs to be ejected here.
+ * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load
+ * value passed here (i.e. false). */
+ blk_dev_change_media_cb(blk, false);
+ }
+
out:
aio_context_release(aio_context);
}
return;
}
- if (has_device && !blk_dev_is_tray_open(blk)) {
+ if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) {
error_setg(errp, "Tray of device '%s' is not open", device);
return;
}
blk_insert_bs(blk, bs);
QTAILQ_INSERT_TAIL(&bdrv_states, bs, device_list);
+
+ if (!blk_dev_has_tray(blk)) {
+ /* For tray-less devices, blockdev-close-tray is a no-op (or may not be
+ * called at all); therefore, the medium needs to be pushed into the
+ * slot here.
+ * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load
+ * value passed here (i.e. true). */
+ blk_dev_change_media_cb(blk, true);
+ }
}
-void qmp_blockdev_insert_medium(const char *device, const char *node_name,
- Error **errp)
+void qmp_x_blockdev_insert_medium(const char *device, const char *node_name,
+ Error **errp)
{
BlockDriverState *bs;
}
bdrv_flags = blk_get_open_flags_from_root_state(blk);
+ bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING |
+ BDRV_O_PROTOCOL);
if (!has_read_only) {
read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN;
goto fail;
}
- qmp_blockdev_remove_medium(device, &err);
+ qmp_x_blockdev_remove_medium(device, &err);
if (err) {
error_propagate(errp, err);
goto fail;
int64_t iops_rd_max,
bool has_iops_wr_max,
int64_t iops_wr_max,
+ bool has_bps_max_length,
+ int64_t bps_max_length,
+ bool has_bps_rd_max_length,
+ int64_t bps_rd_max_length,
+ bool has_bps_wr_max_length,
+ int64_t bps_wr_max_length,
+ bool has_iops_max_length,
+ int64_t iops_max_length,
+ bool has_iops_rd_max_length,
+ int64_t iops_rd_max_length,
+ bool has_iops_wr_max_length,
+ int64_t iops_wr_max_length,
bool has_iops_size,
int64_t iops_size,
bool has_group,
goto out;
}
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps;
cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd;
cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr;
cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max;
}
+ if (has_bps_max_length) {
+ cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = bps_max_length;
+ }
+ if (has_bps_rd_max_length) {
+ cfg.buckets[THROTTLE_BPS_READ].burst_length = bps_rd_max_length;
+ }
+ if (has_bps_wr_max_length) {
+ cfg.buckets[THROTTLE_BPS_WRITE].burst_length = bps_wr_max_length;
+ }
+ if (has_iops_max_length) {
+ cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = iops_max_length;
+ }
+ if (has_iops_rd_max_length) {
+ cfg.buckets[THROTTLE_OPS_READ].burst_length = iops_rd_max_length;
+ }
+ if (has_iops_wr_max_length) {
+ cfg.buckets[THROTTLE_OPS_WRITE].burst_length = iops_wr_max_length;
+ }
+
if (has_iops_size) {
cfg.op_size = iops_size;
}
- if (!check_throttle_config(&cfg, errp)) {
+ if (!throttle_is_valid(&cfg, errp)) {
goto out;
}
return;
}
- bdrv_close(bs);
+ blk_remove_bs(blk);
}
/* if we have a device attached to this BlockDriverState
} else {
block_job_event_completed(bs->job, msg);
}
-
- bdrv_put_ref_bh_schedule(bs);
}
void qmp_block_stream(const char *device,
aio_context_release(aio_context);
}
-void qmp_drive_backup(const char *device, const char *target,
- bool has_format, const char *format,
- enum MirrorSyncMode sync,
- bool has_mode, enum NewImageMode mode,
- bool has_speed, int64_t speed,
- bool has_bitmap, const char *bitmap,
- bool has_on_source_error, BlockdevOnError on_source_error,
- bool has_on_target_error, BlockdevOnError on_target_error,
- Error **errp)
+static void do_drive_backup(const char *device, const char *target,
+ bool has_format, const char *format,
+ enum MirrorSyncMode sync,
+ bool has_mode, enum NewImageMode mode,
+ bool has_speed, int64_t speed,
+ bool has_bitmap, const char *bitmap,
+ bool has_on_source_error,
+ BlockdevOnError on_source_error,
+ bool has_on_target_error,
+ BlockdevOnError on_target_error,
+ BlockJobTxn *txn, Error **errp)
{
BlockBackend *blk;
BlockDriverState *bs;
bmap = bdrv_find_dirty_bitmap(bs, bitmap);
if (!bmap) {
error_setg(errp, "Bitmap '%s' could not be found", bitmap);
+ bdrv_unref(target_bs);
goto out;
}
}
backup_start(bs, target_bs, speed, sync, bmap,
on_source_error, on_target_error,
- block_job_cb, bs, &local_err);
+ block_job_cb, bs, txn, &local_err);
if (local_err != NULL) {
bdrv_unref(target_bs);
error_propagate(errp, local_err);
aio_context_release(aio_context);
}
+void qmp_drive_backup(const char *device, const char *target,
+ bool has_format, const char *format,
+ enum MirrorSyncMode sync,
+ bool has_mode, enum NewImageMode mode,
+ bool has_speed, int64_t speed,
+ bool has_bitmap, const char *bitmap,
+ bool has_on_source_error, BlockdevOnError on_source_error,
+ bool has_on_target_error, BlockdevOnError on_target_error,
+ Error **errp)
+{
+ return do_drive_backup(device, target, has_format, format, sync,
+ has_mode, mode, has_speed, speed,
+ has_bitmap, bitmap,
+ has_on_source_error, on_source_error,
+ has_on_target_error, on_target_error,
+ NULL, errp);
+}
+
BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp)
{
return bdrv_named_nodes_list(errp);
}
-void qmp_blockdev_backup(const char *device, const char *target,
+void do_blockdev_backup(const char *device, const char *target,
enum MirrorSyncMode sync,
bool has_speed, int64_t speed,
bool has_on_source_error,
BlockdevOnError on_source_error,
bool has_on_target_error,
BlockdevOnError on_target_error,
- Error **errp)
+ BlockJobTxn *txn, Error **errp)
{
BlockBackend *blk, *target_blk;
BlockDriverState *bs;
bdrv_ref(target_bs);
bdrv_set_aio_context(target_bs, aio_context);
backup_start(bs, target_bs, speed, sync, NULL, on_source_error,
- on_target_error, block_job_cb, bs, &local_err);
+ on_target_error, block_job_cb, bs, txn, &local_err);
if (local_err != NULL) {
bdrv_unref(target_bs);
error_propagate(errp, local_err);
aio_context_release(aio_context);
}
-void qmp_drive_mirror(const char *device, const char *target,
- bool has_format, const char *format,
- bool has_node_name, const char *node_name,
- bool has_replaces, const char *replaces,
- enum MirrorSyncMode sync,
- bool has_mode, enum NewImageMode mode,
- bool has_speed, int64_t speed,
- bool has_granularity, uint32_t granularity,
- bool has_buf_size, int64_t buf_size,
- bool has_on_source_error, BlockdevOnError on_source_error,
- bool has_on_target_error, BlockdevOnError on_target_error,
- bool has_unmap, bool unmap,
- Error **errp)
+void qmp_blockdev_backup(const char *device, const char *target,
+ enum MirrorSyncMode sync,
+ bool has_speed, int64_t speed,
+ bool has_on_source_error,
+ BlockdevOnError on_source_error,
+ bool has_on_target_error,
+ BlockdevOnError on_target_error,
+ Error **errp)
+{
+ do_blockdev_backup(device, target, sync, has_speed, speed,
+ has_on_source_error, on_source_error,
+ has_on_target_error, on_target_error,
+ NULL, errp);
+}
+
+/* Parameter check and block job starting for drive mirroring.
+ * Caller should hold @device and @target's aio context (must be the same).
+ **/
+static void blockdev_mirror_common(BlockDriverState *bs,
+ BlockDriverState *target,
+ bool has_replaces, const char *replaces,
+ enum MirrorSyncMode sync,
+ bool has_speed, int64_t speed,
+ bool has_granularity, uint32_t granularity,
+ bool has_buf_size, int64_t buf_size,
+ bool has_on_source_error,
+ BlockdevOnError on_source_error,
+ bool has_on_target_error,
+ BlockdevOnError on_target_error,
+ bool has_unmap, bool unmap,
+ Error **errp)
{
- BlockBackend *blk;
- BlockDriverState *bs;
- BlockDriverState *source, *target_bs;
- AioContext *aio_context;
- Error *local_err = NULL;
- QDict *options;
- int flags;
- int64_t size;
- int ret;
if (!has_speed) {
speed = 0;
if (!has_on_target_error) {
on_target_error = BLOCKDEV_ON_ERROR_REPORT;
}
- if (!has_mode) {
- mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
- }
if (!has_granularity) {
granularity = 0;
}
return;
}
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) {
+ return;
+ }
+ if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) {
+ return;
+ }
+ if (target->blk) {
+ error_setg(errp, "Cannot mirror to an attached block device");
+ return;
+ }
+
+ if (!bs->backing && sync == MIRROR_SYNC_MODE_TOP) {
+ sync = MIRROR_SYNC_MODE_FULL;
+ }
+
+ /* pass the node name to replace to mirror start since it's loose coupling
+ * and will allow to check whether the node still exist at mirror completion
+ */
+ mirror_start(bs, target,
+ has_replaces ? replaces : NULL,
+ speed, granularity, buf_size, sync,
+ on_source_error, on_target_error, unmap,
+ block_job_cb, bs, errp);
+}
+
+void qmp_drive_mirror(const char *device, const char *target,
+ bool has_format, const char *format,
+ bool has_node_name, const char *node_name,
+ bool has_replaces, const char *replaces,
+ enum MirrorSyncMode sync,
+ bool has_mode, enum NewImageMode mode,
+ bool has_speed, int64_t speed,
+ bool has_granularity, uint32_t granularity,
+ bool has_buf_size, int64_t buf_size,
+ bool has_on_source_error, BlockdevOnError on_source_error,
+ bool has_on_target_error, BlockdevOnError on_target_error,
+ bool has_unmap, bool unmap,
+ Error **errp)
+{
+ BlockDriverState *bs;
+ BlockBackend *blk;
+ BlockDriverState *source, *target_bs;
+ AioContext *aio_context;
+ Error *local_err = NULL;
+ QDict *options = NULL;
+ int flags;
+ int64_t size;
+ int ret;
+
blk = blk_by_name(device);
if (!blk) {
error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
goto out;
}
bs = blk_bs(blk);
+ if (!has_mode) {
+ mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
+ }
if (!has_format) {
format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name;
}
- if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR, errp)) {
- goto out;
- }
-
flags = bs->open_flags | BDRV_O_RDWR;
source = backing_bs(bs);
if (!source && sync == MIRROR_SYNC_MODE_TOP) {
bdrv_set_aio_context(target_bs, aio_context);
- /* pass the node name to replace to mirror start since it's loose coupling
- * and will allow to check whether the node still exist at mirror completion
- */
- mirror_start(bs, target_bs,
- has_replaces ? replaces : NULL,
- speed, granularity, buf_size, sync,
- on_source_error, on_target_error,
- unmap,
- block_job_cb, bs, &local_err);
- if (local_err != NULL) {
+ blockdev_mirror_common(bs, target_bs,
+ has_replaces, replaces, sync,
+ has_speed, speed,
+ has_granularity, granularity,
+ has_buf_size, buf_size,
+ has_on_source_error, on_source_error,
+ has_on_target_error, on_target_error,
+ has_unmap, unmap,
+ &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
bdrv_unref(target_bs);
+ }
+out:
+ aio_context_release(aio_context);
+}
+
+void qmp_blockdev_mirror(const char *device, const char *target,
+ bool has_replaces, const char *replaces,
+ MirrorSyncMode sync,
+ bool has_speed, int64_t speed,
+ bool has_granularity, uint32_t granularity,
+ bool has_buf_size, int64_t buf_size,
+ bool has_on_source_error,
+ BlockdevOnError on_source_error,
+ bool has_on_target_error,
+ BlockdevOnError on_target_error,
+ Error **errp)
+{
+ BlockDriverState *bs;
+ BlockBackend *blk;
+ BlockDriverState *target_bs;
+ AioContext *aio_context;
+ Error *local_err = NULL;
+
+ blk = blk_by_name(device);
+ if (!blk) {
+ error_setg(errp, "Device '%s' not found", device);
+ return;
+ }
+ bs = blk_bs(blk);
+
+ if (!bs) {
+ error_setg(errp, "Device '%s' has no media", device);
+ return;
+ }
+
+ target_bs = bdrv_lookup_bs(target, target, errp);
+ if (!target_bs) {
+ return;
+ }
+
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
+
+ bdrv_ref(target_bs);
+ bdrv_set_aio_context(target_bs, aio_context);
+
+ blockdev_mirror_common(bs, target_bs,
+ has_replaces, replaces, sync,
+ has_speed, speed,
+ has_granularity, granularity,
+ has_buf_size, buf_size,
+ has_on_source_error, on_source_error,
+ has_on_target_error, on_target_error,
+ true, true,
+ &local_err);
+ if (local_err) {
error_propagate(errp, local_err);
- goto out;
+ bdrv_unref(target_bs);
}
-out:
aio_context_release(aio_context);
}
}
}
- visit_type_BlockdevOptions(qmp_output_get_visitor(ov),
- &options, NULL, &local_err);
+ visit_type_BlockdevOptions(qmp_output_get_visitor(ov), NULL, &options,
+ &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto fail;
if (!bs) {
goto fail;
}
+
+ QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list);
}
if (bs && bdrv_key_required(bs)) {
if (blk) {
blk_unref(blk);
} else {
+ QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list);
bdrv_unref(bs);
}
error_setg(errp, "blockdev-add doesn't support encrypted devices");
goto out;
}
- if (bs->refcnt > 1 || !QLIST_EMPTY(&bs->parents)) {
+ if (!blk && !bs->monitor_list.tqe_prev) {
+ error_setg(errp, "Node %s is not owned by the monitor",
+ bs->node_name);
+ goto out;
+ }
+
+ if (bs->refcnt > 1) {
error_setg(errp, "Block device %s is in use",
bdrv_get_device_or_node_name(bs));
goto out;
if (blk) {
blk_unref(blk);
} else {
+ QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list);
bdrv_unref(bs);
}
.name = "discard",
.type = QEMU_OPT_STRING,
.help = "discard operation (ignore/off, unmap/on)",
- },{
- .name = BDRV_OPT_CACHE_WB,
- .type = QEMU_OPT_BOOL,
- .help = "enables writeback mode for any caches",
- },{
- .name = BDRV_OPT_CACHE_DIRECT,
- .type = QEMU_OPT_BOOL,
- .help = "enables use of O_DIRECT (bypass the host page cache)",
- },{
- .name = BDRV_OPT_CACHE_NO_FLUSH,
- .type = QEMU_OPT_BOOL,
- .help = "ignore any flush requests for the device",
},{
.name = "aio",
.type = QEMU_OPT_STRING,
.name = "throttling.bps-write-max",
.type = QEMU_OPT_NUMBER,
.help = "total bytes write burst",
+ },{
+ .name = "throttling.iops-total-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the iops-total-max burst period, in seconds",
+ },{
+ .name = "throttling.iops-read-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the iops-read-max burst period, in seconds",
+ },{
+ .name = "throttling.iops-write-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the iops-write-max burst period, in seconds",
+ },{
+ .name = "throttling.bps-total-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the bps-total-max burst period, in seconds",
+ },{
+ .name = "throttling.bps-read-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the bps-read-max burst period, in seconds",
+ },{
+ .name = "throttling.bps-write-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the bps-write-max burst period, in seconds",
},{
.name = "throttling.iops-size",
.type = QEMU_OPT_NUMBER,
.name = "detect-zeroes",
.type = QEMU_OPT_STRING,
.help = "try to optimize zero writes (off, on, unmap)",
+ },{
+ .name = "stats-account-invalid",
+ .type = QEMU_OPT_BOOL,
+ .help = "whether to account for invalid I/O operations "
+ "in the statistics",
+ },{
+ .name = "stats-account-failed",
+ .type = QEMU_OPT_BOOL,
+ .help = "whether to account for failed I/O operations "
+ "in the statistics",
},
{ /* end of list */ }
},
.name = "discard",
.type = QEMU_OPT_STRING,
.help = "discard operation (ignore/off, unmap/on)",
- },{
- .name = "cache.writeback",
- .type = QEMU_OPT_BOOL,
- .help = "enables writeback mode for any caches",
- },{
- .name = "cache.direct",
- .type = QEMU_OPT_BOOL,
- .help = "enables use of O_DIRECT (bypass the host page cache)",
- },{
- .name = "cache.no-flush",
- .type = QEMU_OPT_BOOL,
- .help = "ignore any flush requests for the device",
},{
.name = "aio",
.type = QEMU_OPT_STRING,
projects / mirror_qemu.git / blobdiff