for (i = 0; i < BLOCK_OP_TYPE_MAX; i++) {
QLIST_INIT(&bs->op_blockers[i]);
}
- bdrv_iostatus_disable(bs);
notifier_list_init(&bs->close_notifiers);
notifier_with_return_list_init(&bs->before_write_notifiers);
qemu_co_queue_init(&bs->throttled_reqs[0]);
bs_dest->enable_write_cache = bs_src->enable_write_cache;
- /* r/w error */
- bs_dest->on_read_error = bs_src->on_read_error;
- bs_dest->on_write_error = bs_src->on_write_error;
-
- /* i/o status */
- bs_dest->iostatus_enabled = bs_src->iostatus_enabled;
- bs_dest->iostatus = bs_src->iostatus;
-
/* dirty bitmap */
bs_dest->dirty_bitmaps = bs_src->dirty_bitmaps;
}
*nb_sectors_ptr = nb_sectors < 0 ? 0 : nb_sectors;
}
-void bdrv_set_on_error(BlockDriverState *bs, BlockdevOnError on_read_error,
- BlockdevOnError on_write_error)
-{
- bs->on_read_error = on_read_error;
- bs->on_write_error = on_write_error;
-}
-
-BlockdevOnError bdrv_get_on_error(BlockDriverState *bs, bool is_read)
-{
- return is_read ? bs->on_read_error : bs->on_write_error;
-}
-
-BlockErrorAction bdrv_get_error_action(BlockDriverState *bs, bool is_read, int error)
-{
- BlockdevOnError on_err = is_read ? bs->on_read_error : bs->on_write_error;
-
- switch (on_err) {
- case BLOCKDEV_ON_ERROR_ENOSPC:
- return (error == ENOSPC) ?
- BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT;
- case BLOCKDEV_ON_ERROR_STOP:
- return BLOCK_ERROR_ACTION_STOP;
- case BLOCKDEV_ON_ERROR_REPORT:
- return BLOCK_ERROR_ACTION_REPORT;
- case BLOCKDEV_ON_ERROR_IGNORE:
- return BLOCK_ERROR_ACTION_IGNORE;
- default:
- abort();
- }
-}
-
-static void send_qmp_error_event(BlockDriverState *bs,
- BlockErrorAction action,
- bool is_read, int error)
-{
- IoOperationType optype;
-
- optype = is_read ? IO_OPERATION_TYPE_READ : IO_OPERATION_TYPE_WRITE;
- qapi_event_send_block_io_error(bdrv_get_device_name(bs), optype, action,
- bdrv_iostatus_is_enabled(bs),
- error == ENOSPC, strerror(error),
- &error_abort);
-}
-
-/* This is done by device models because, while the block layer knows
- * about the error, it does not know whether an operation comes from
- * the device or the block layer (from a job, for example).
- */
-void bdrv_error_action(BlockDriverState *bs, BlockErrorAction action,
- bool is_read, int error)
-{
- assert(error >= 0);
-
- if (action == BLOCK_ERROR_ACTION_STOP) {
- /* First set the iostatus, so that "info block" returns an iostatus
- * that matches the events raised so far (an additional error iostatus
- * is fine, but not a lost one).
- */
- bdrv_iostatus_set_err(bs, error);
-
- /* Then raise the request to stop the VM and the event.
- * qemu_system_vmstop_request_prepare has two effects. First,
- * it ensures that the STOP event always comes after the
- * BLOCK_IO_ERROR event. Second, it ensures that even if management
- * can observe the STOP event and do a "cont" before the STOP
- * event is issued, the VM will not stop. In this case, vm_start()
- * also ensures that the STOP/RESUME pair of events is emitted.
- */
- qemu_system_vmstop_request_prepare();
- send_qmp_error_event(bs, action, is_read, error);
- qemu_system_vmstop_request(RUN_STATE_IO_ERROR);
- } else {
- send_qmp_error_event(bs, action, is_read, error);
- }
-}
-
int bdrv_is_read_only(BlockDriverState *bs)
{
return bs->read_only;
return true;
}
-void bdrv_iostatus_enable(BlockDriverState *bs)
-{
- bs->iostatus_enabled = true;
- bs->iostatus = BLOCK_DEVICE_IO_STATUS_OK;
-}
-
-/* The I/O status is only enabled if the drive explicitly
- * enables it _and_ the VM is configured to stop on errors */
-bool bdrv_iostatus_is_enabled(const BlockDriverState *bs)
-{
- return (bs->iostatus_enabled &&
- (bs->on_write_error == BLOCKDEV_ON_ERROR_ENOSPC ||
- bs->on_write_error == BLOCKDEV_ON_ERROR_STOP ||
- bs->on_read_error == BLOCKDEV_ON_ERROR_STOP));
-}
-
-void bdrv_iostatus_disable(BlockDriverState *bs)
-{
- bs->iostatus_enabled = false;
-}
-
-void bdrv_iostatus_reset(BlockDriverState *bs)
-{
- if (bdrv_iostatus_is_enabled(bs)) {
- bs->iostatus = BLOCK_DEVICE_IO_STATUS_OK;
- if (bs->job) {
- block_job_iostatus_reset(bs->job);
- }
- }
-}
-
-void bdrv_iostatus_set_err(BlockDriverState *bs, int error)
-{
- assert(bdrv_iostatus_is_enabled(bs));
- if (bs->iostatus == BLOCK_DEVICE_IO_STATUS_OK) {
- bs->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE :
- BLOCK_DEVICE_IO_STATUS_FAILED;
- }
-}
-
void bdrv_img_create(const char *filename, const char *fmt,
const char *base_filename, const char *base_fmt,
char *options, uint64_t img_size, int flags,
#include "block/blockjob.h"
#include "qapi/qmp/qerror.h"
#include "qemu/ratelimit.h"
+#include "sysemu/block-backend.h"
#define BACKUP_CLUSTER_BITS 16
#define BACKUP_CLUSTER_SIZE (1 << BACKUP_CLUSTER_BITS)
{
BackupBlockJob *s = container_of(job, BackupBlockJob, common);
- bdrv_iostatus_reset(s->target);
+ if (s->target->blk) {
+ blk_iostatus_reset(s->target->blk);
+ }
}
static const BlockJobDriver backup_job_driver = {
job->bitmap = hbitmap_alloc(end, 0);
bdrv_set_enable_write_cache(target, true);
- bdrv_set_on_error(target, on_target_error, on_target_error);
- bdrv_iostatus_enable(target);
+ if (target->blk) {
+ blk_set_on_error(target->blk, on_target_error, on_target_error);
+ blk_iostatus_enable(target->blk);
+ }
bdrv_add_before_write_notifier(bs, &before_write);
}
hbitmap_free(job->bitmap);
- bdrv_iostatus_disable(target);
+ if (target->blk) {
+ blk_iostatus_disable(target->blk);
+ }
bdrv_op_unblock_all(target, job->common.blocker);
data = g_malloc(sizeof(*data));
if ((on_source_error == BLOCKDEV_ON_ERROR_STOP ||
on_source_error == BLOCKDEV_ON_ERROR_ENOSPC) &&
- !bdrv_iostatus_is_enabled(bs)) {
+ (!bs->blk || !blk_iostatus_is_enabled(bs->blk))) {
error_setg(errp, QERR_INVALID_PARAMETER, "on-source-error");
return;
}
#include "sysemu/block-backend.h"
#include "block/block_int.h"
+#include "block/blockjob.h"
#include "sysemu/blockdev.h"
+#include "sysemu/sysemu.h"
#include "qapi-event.h"
/* Number of coroutines to reserve per attached device model */
/* I/O stats (display with "info blockstats"). */
BlockAcctStats stats;
+
+ BlockdevOnError on_read_error, on_write_error;
+ bool iostatus_enabled;
+ BlockDeviceIoStatus iostatus;
};
typedef struct BlockBackendAIOCB {
}
blk_ref(blk);
blk->dev = dev;
- bdrv_iostatus_reset(blk->bs);
+ blk_iostatus_reset(blk);
return 0;
}
void blk_iostatus_enable(BlockBackend *blk)
{
- bdrv_iostatus_enable(blk->bs);
+ blk->iostatus_enabled = true;
+ blk->iostatus = BLOCK_DEVICE_IO_STATUS_OK;
+}
+
+/* The I/O status is only enabled if the drive explicitly
+ * enables it _and_ the VM is configured to stop on errors */
+bool blk_iostatus_is_enabled(const BlockBackend *blk)
+{
+ return (blk->iostatus_enabled &&
+ (blk->on_write_error == BLOCKDEV_ON_ERROR_ENOSPC ||
+ blk->on_write_error == BLOCKDEV_ON_ERROR_STOP ||
+ blk->on_read_error == BLOCKDEV_ON_ERROR_STOP));
+}
+
+BlockDeviceIoStatus blk_iostatus(const BlockBackend *blk)
+{
+ return blk->iostatus;
+}
+
+void blk_iostatus_disable(BlockBackend *blk)
+{
+ blk->iostatus_enabled = false;
+}
+
+void blk_iostatus_reset(BlockBackend *blk)
+{
+ if (blk_iostatus_is_enabled(blk)) {
+ blk->iostatus = BLOCK_DEVICE_IO_STATUS_OK;
+ if (blk->bs && blk->bs->job) {
+ block_job_iostatus_reset(blk->bs->job);
+ }
+ }
+}
+
+void blk_iostatus_set_err(BlockBackend *blk, int error)
+{
+ assert(blk_iostatus_is_enabled(blk));
+ if (blk->iostatus == BLOCK_DEVICE_IO_STATUS_OK) {
+ blk->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE :
+ BLOCK_DEVICE_IO_STATUS_FAILED;
+ }
}
static int blk_check_byte_request(BlockBackend *blk, int64_t offset,
bdrv_drain_all();
}
+void blk_set_on_error(BlockBackend *blk, BlockdevOnError on_read_error,
+ BlockdevOnError on_write_error)
+{
+ blk->on_read_error = on_read_error;
+ blk->on_write_error = on_write_error;
+}
+
BlockdevOnError blk_get_on_error(BlockBackend *blk, bool is_read)
{
- return bdrv_get_on_error(blk->bs, is_read);
+ return is_read ? blk->on_read_error : blk->on_write_error;
}
BlockErrorAction blk_get_error_action(BlockBackend *blk, bool is_read,
int error)
{
- return bdrv_get_error_action(blk->bs, is_read, error);
+ BlockdevOnError on_err = blk_get_on_error(blk, is_read);
+
+ switch (on_err) {
+ case BLOCKDEV_ON_ERROR_ENOSPC:
+ return (error == ENOSPC) ?
+ BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT;
+ case BLOCKDEV_ON_ERROR_STOP:
+ return BLOCK_ERROR_ACTION_STOP;
+ case BLOCKDEV_ON_ERROR_REPORT:
+ return BLOCK_ERROR_ACTION_REPORT;
+ case BLOCKDEV_ON_ERROR_IGNORE:
+ return BLOCK_ERROR_ACTION_IGNORE;
+ default:
+ abort();
+ }
}
+static void send_qmp_error_event(BlockBackend *blk,
+ BlockErrorAction action,
+ bool is_read, int error)
+{
+ IoOperationType optype;
+
+ optype = is_read ? IO_OPERATION_TYPE_READ : IO_OPERATION_TYPE_WRITE;
+ qapi_event_send_block_io_error(blk_name(blk), optype, action,
+ blk_iostatus_is_enabled(blk),
+ error == ENOSPC, strerror(error),
+ &error_abort);
+}
+
+/* This is done by device models because, while the block layer knows
+ * about the error, it does not know whether an operation comes from
+ * the device or the block layer (from a job, for example).
+ */
void blk_error_action(BlockBackend *blk, BlockErrorAction action,
bool is_read, int error)
{
- bdrv_error_action(blk->bs, action, is_read, error);
+ assert(error >= 0);
+
+ if (action == BLOCK_ERROR_ACTION_STOP) {
+ /* First set the iostatus, so that "info block" returns an iostatus
+ * that matches the events raised so far (an additional error iostatus
+ * is fine, but not a lost one).
+ */
+ blk_iostatus_set_err(blk, error);
+
+ /* Then raise the request to stop the VM and the event.
+ * qemu_system_vmstop_request_prepare has two effects. First,
+ * it ensures that the STOP event always comes after the
+ * BLOCK_IO_ERROR event. Second, it ensures that even if management
+ * can observe the STOP event and do a "cont" before the STOP
+ * event is issued, the VM will not stop. In this case, vm_start()
+ * also ensures that the STOP/RESUME pair of events is emitted.
+ */
+ qemu_system_vmstop_request_prepare();
+ send_qmp_error_event(blk, action, is_read, error);
+ qemu_system_vmstop_request(RUN_STATE_IO_ERROR);
+ } else {
+ send_qmp_error_event(blk, action, is_read, error);
+ }
}
int blk_is_read_only(BlockBackend *blk)
#include "block/blockjob.h"
#include "qapi/qmp/qerror.h"
#include "qemu/ratelimit.h"
+#include "sysemu/block-backend.h"
enum {
/*
if ((on_error == BLOCKDEV_ON_ERROR_STOP ||
on_error == BLOCKDEV_ON_ERROR_ENOSPC) &&
- !bdrv_iostatus_is_enabled(bs)) {
+ (!bs->blk || !blk_iostatus_is_enabled(bs->blk))) {
error_setg(errp, "Invalid parameter combination");
return;
}
#include "trace.h"
#include "block/blockjob.h"
#include "block/block_int.h"
+#include "sysemu/block-backend.h"
#include "qapi/qmp/qerror.h"
#include "qemu/ratelimit.h"
#include "qemu/bitmap.h"
g_free(s->cow_bitmap);
g_free(s->in_flight_bitmap);
bdrv_release_dirty_bitmap(bs, s->dirty_bitmap);
- bdrv_iostatus_disable(s->target);
+ if (s->target->blk) {
+ blk_iostatus_disable(s->target->blk);
+ }
data = g_malloc(sizeof(*data));
data->ret = ret;
{
MirrorBlockJob *s = container_of(job, MirrorBlockJob, common);
- bdrv_iostatus_reset(s->target);
+ if (s->target->blk) {
+ blk_iostatus_reset(s->target->blk);
+ }
}
static void mirror_complete(BlockJob *job, Error **errp)
if ((on_source_error == BLOCKDEV_ON_ERROR_STOP ||
on_source_error == BLOCKDEV_ON_ERROR_ENOSPC) &&
- !bdrv_iostatus_is_enabled(bs)) {
+ (!bs->blk || !blk_iostatus_is_enabled(bs->blk))) {
error_setg(errp, QERR_INVALID_PARAMETER, "on-source-error");
return;
}
return;
}
bdrv_set_enable_write_cache(s->target, true);
- bdrv_set_on_error(s->target, on_target_error, on_target_error);
- bdrv_iostatus_enable(s->target);
+ if (s->target->blk) {
+ blk_set_on_error(s->target->blk, on_target_error, on_target_error);
+ blk_iostatus_enable(s->target->blk);
+ }
s->common.co = qemu_coroutine_create(mirror_run);
trace_mirror_start(bs, s, s->common.co, opaque);
qemu_coroutine_enter(s->common.co, s);
info->tray_open = blk_dev_is_tray_open(blk);
}
- if (bdrv_iostatus_is_enabled(bs)) {
+ if (blk_iostatus_is_enabled(blk)) {
info->has_io_status = true;
- info->io_status = bs->iostatus;
+ info->io_status = blk_iostatus(blk);
}
if (!QLIST_EMPTY(&bs->dirty_bitmaps)) {
#include "block/blockjob.h"
#include "qapi/qmp/qerror.h"
#include "qemu/ratelimit.h"
+#include "sysemu/block-backend.h"
enum {
/*
if ((on_error == BLOCKDEV_ON_ERROR_STOP ||
on_error == BLOCKDEV_ON_ERROR_ENOSPC) &&
- !bdrv_iostatus_is_enabled(bs)) {
+ (!bs->blk || !blk_iostatus_is_enabled(bs->blk))) {
error_setg(errp, QERR_INVALID_PARAMETER, "on-error");
return;
}
bs->detect_zeroes = detect_zeroes;
- bdrv_set_on_error(bs, on_read_error, on_write_error);
+ blk_set_on_error(blk, on_read_error, on_write_error);
/* disk I/O throttling */
if (throttle_enabled(&cfg)) {
if (blk_get_attached_dev(blk)) {
blk_hide_on_behalf_of_hmp_drive_del(blk);
/* Further I/O must not pause the guest */
- bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT,
- BLOCKDEV_ON_ERROR_REPORT);
+ blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT,
+ BLOCKDEV_ON_ERROR_REPORT);
} else {
blk_unref(blk);
}
#include "block/block.h"
#include "block/blockjob.h"
#include "block/block_int.h"
+#include "sysemu/block-backend.h"
#include "qapi/qmp/qerror.h"
#include "qapi/qmp/qjson.h"
#include "qemu/coroutine.h"
job->user_paused = true;
block_job_pause(job);
block_job_iostatus_set_err(job, error);
- if (bs != job->bs) {
- bdrv_iostatus_set_err(bs, error);
+ if (bs->blk && bs != job->bs) {
+ blk_iostatus_set_err(bs->blk, error);
}
}
return action;
BLOCK_OP_TYPE_MAX,
} BlockOpType;
-void bdrv_iostatus_enable(BlockDriverState *bs);
-void bdrv_iostatus_reset(BlockDriverState *bs);
-void bdrv_iostatus_disable(BlockDriverState *bs);
-bool bdrv_iostatus_is_enabled(const BlockDriverState *bs);
-void bdrv_iostatus_set_err(BlockDriverState *bs, int error);
void bdrv_info_print(Monitor *mon, const QObject *data);
void bdrv_info(Monitor *mon, QObject **ret_data);
void bdrv_stats_print(Monitor *mon, const QObject *data);
int bdrv_is_allocated_above(BlockDriverState *top, BlockDriverState *base,
int64_t sector_num, int nb_sectors, int *pnum);
-void bdrv_set_on_error(BlockDriverState *bs, BlockdevOnError on_read_error,
- BlockdevOnError on_write_error);
-BlockdevOnError bdrv_get_on_error(BlockDriverState *bs, bool is_read);
-BlockErrorAction bdrv_get_error_action(BlockDriverState *bs, bool is_read, int error);
-void bdrv_error_action(BlockDriverState *bs, BlockErrorAction action,
- bool is_read, int error);
int bdrv_is_read_only(BlockDriverState *bs);
int bdrv_is_sg(BlockDriverState *bs);
int bdrv_enable_write_cache(BlockDriverState *bs);
/* do we need to tell the quest if we have a volatile write cache? */
int enable_write_cache;
- /* NOTE: the following infos are only hints for real hardware
- drivers. They are not used by the block driver */
- BlockdevOnError on_read_error, on_write_error;
- bool iostatus_enabled;
- BlockDeviceIoStatus iostatus;
-
/* the following member gives a name to every node on the bs graph. */
char node_name[32];
/* element of the list of named nodes building the graph */
void blk_hide_on_behalf_of_hmp_drive_del(BlockBackend *blk);
void blk_iostatus_enable(BlockBackend *blk);
+bool blk_iostatus_is_enabled(const BlockBackend *blk);
+BlockDeviceIoStatus blk_iostatus(const BlockBackend *blk);
+void blk_iostatus_disable(BlockBackend *blk);
+void blk_iostatus_reset(BlockBackend *blk);
+void blk_iostatus_set_err(BlockBackend *blk, int error);
int blk_attach_dev(BlockBackend *blk, void *dev);
void blk_attach_dev_nofail(BlockBackend *blk, void *dev);
void blk_detach_dev(BlockBackend *blk, void *dev);
int blk_flush_all(void);
void blk_drain(BlockBackend *blk);
void blk_drain_all(void);
+void blk_set_on_error(BlockBackend *blk, BlockdevOnError on_read_error,
+ BlockdevOnError on_write_error);
BlockdevOnError blk_get_on_error(BlockBackend *blk, bool is_read);
BlockErrorAction blk_get_error_action(BlockBackend *blk, bool is_read,
int error);
#include "sysemu/arch_init.h"
#include "hw/qdev.h"
#include "sysemu/blockdev.h"
+#include "sysemu/block-backend.h"
#include "qom/qom-qobject.h"
#include "qapi/qmp/qerror.h"
#include "qapi/qmp/qobject.h"
void qmp_cont(Error **errp)
{
Error *local_err = NULL;
+ BlockBackend *blk;
BlockDriverState *bs;
if (runstate_needs_reset()) {
return;
}
- for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) {
- bdrv_iostatus_reset(bs);
+ for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
+ blk_iostatus_reset(blk);
}
for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) {
bdrv_add_key(bs, NULL, &local_err);