*
*/
-#include "qemu-timer.h"
+#include "qemu/timer.h"
#include "trace.h"
#include "qed.h"
-#include "qerror.h"
-#include "migration.h"
+#include "qapi/qmp/qerror.h"
+#include "migration/migration.h"
static void qed_aio_cancel(BlockDriverAIOCB *blockacb)
{
}
}
-static AIOPool qed_aio_pool = {
+static const AIOCBInfo qed_aiocb_info = {
.aiocb_size = sizeof(QEDAIOCB),
.cancel = qed_aio_cancel,
};
le->backing_filename_size = cpu_to_le32(cpu->backing_filename_size);
}
-static int qed_write_header_sync(BDRVQEDState *s)
+int qed_write_header_sync(BDRVQEDState *s)
{
QEDHeader le;
int ret;
qemu_del_timer(s->need_check_timer);
}
+static void bdrv_qed_rebind(BlockDriverState *bs)
+{
+ BDRVQEDState *s = bs->opaque;
+ s->bs = bs;
+}
+
static int bdrv_qed_open(BlockDriverState *bs, int flags)
{
BDRVQEDState *s = bs->opaque;
* feature is no longer valid.
*/
if ((s->header.autoclear_features & ~QED_AUTOCLEAR_FEATURE_MASK) != 0 &&
- !bdrv_is_read_only(bs->file)) {
+ !bdrv_is_read_only(bs->file) && !(flags & BDRV_O_INCOMING)) {
s->header.autoclear_features &= QED_AUTOCLEAR_FEATURE_MASK;
ret = qed_write_header_sync(s);
}
/* If image was not closed cleanly, check consistency */
- if (s->header.features & QED_F_NEED_CHECK) {
+ if (!(flags & BDRV_O_CHECK) && (s->header.features & QED_F_NEED_CHECK)) {
/* Read-only images cannot be fixed. There is no risk of corruption
* since write operations are not possible. Therefore, allow
* potentially inconsistent images to be opened read-only. This can
* aid data recovery from an otherwise inconsistent image.
*/
- if (!bdrv_is_read_only(bs->file)) {
+ if (!bdrv_is_read_only(bs->file) &&
+ !(flags & BDRV_O_INCOMING)) {
BdrvCheckResult result = {0};
ret = qed_check(s, &result, true);
if (ret) {
goto out;
}
- if (!result.corruptions && !result.check_errors) {
- /* Ensure fixes reach storage before clearing check bit */
- bdrv_flush(s->bs);
-
- s->header.features &= ~QED_F_NEED_CHECK;
- qed_write_header_sync(s);
- }
}
}
s->need_check_timer = qemu_new_timer_ns(vm_clock,
qed_need_check_timer_cb, s);
- error_set(&s->migration_blocker,
- QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED,
- "qed", bs->device_name, "live migration");
- migrate_add_blocker(s->migration_blocker);
-
-
out:
if (ret) {
qed_free_l2_cache(&s->l2_cache);
return ret;
}
+/* We have nothing to do for QED reopen, stubs just return
+ * success */
+static int bdrv_qed_reopen_prepare(BDRVReopenState *state,
+ BlockReopenQueue *queue, Error **errp)
+{
+ return 0;
+}
+
static void bdrv_qed_close(BlockDriverState *bs)
{
BDRVQEDState *s = bs->opaque;
- migrate_del_blocker(s->migration_blocker);
- error_free(s->migration_blocker);
-
qed_cancel_need_check_timer(s);
qemu_free_timer(s->need_check_timer);
/* Zero all sectors if reading beyond the end of the backing file */
if (pos >= backing_length ||
pos + qiov->size > backing_length) {
- qemu_iovec_memset(qiov, 0, qiov->size);
+ qemu_iovec_memset(qiov, 0, 0, qiov->size);
}
/* Complete now if there are no backing file sectors to read */
/* If the read straddles the end of the backing file, shorten it */
size = MIN((uint64_t)backing_length - pos, qiov->size);
- BLKDBG_EVENT(s->bs->file, BLKDBG_READ_BACKING);
+ BLKDBG_EVENT(s->bs->file, BLKDBG_READ_BACKING_AIO);
bdrv_aio_readv(s->bs->backing_hd, pos / BDRV_SECTOR_SIZE,
qiov, size / BDRV_SECTOR_SIZE, cb, opaque);
}
acb->cur_nclusters = qed_bytes_to_clusters(s,
qed_offset_into_cluster(s, acb->cur_pos) + len);
- qemu_iovec_copy(&acb->cur_qiov, acb->qiov, acb->qiov_offset, len);
+ qemu_iovec_concat(&acb->cur_qiov, acb->qiov, acb->qiov_offset, len);
if (acb->flags & QED_AIOCB_ZERO) {
/* Skip ahead if the clusters are already zero */
/* Calculate the I/O vector */
acb->cur_cluster = offset;
- qemu_iovec_copy(&acb->cur_qiov, acb->qiov, acb->qiov_offset, len);
+ qemu_iovec_concat(&acb->cur_qiov, acb->qiov, acb->qiov_offset, len);
/* Do the actual write */
qed_aio_write_main(acb, 0);
goto err;
}
- qemu_iovec_copy(&acb->cur_qiov, acb->qiov, acb->qiov_offset, len);
+ qemu_iovec_concat(&acb->cur_qiov, acb->qiov, acb->qiov_offset, len);
/* Handle zero cluster and backing file reads */
if (ret == QED_CLUSTER_ZERO) {
- qemu_iovec_memset(&acb->cur_qiov, 0, acb->cur_qiov.size);
+ qemu_iovec_memset(&acb->cur_qiov, 0, 0, acb->cur_qiov.size);
qed_aio_next_io(acb, 0);
return;
} else if (ret != QED_CLUSTER_FOUND) {
BlockDriverCompletionFunc *cb,
void *opaque, int flags)
{
- QEDAIOCB *acb = qemu_aio_get(&qed_aio_pool, bs, cb, opaque);
+ QEDAIOCB *acb = qemu_aio_get(&qed_aiocb_info, bs, cb, opaque);
trace_qed_aio_setup(bs->opaque, acb, sector_num, nb_sectors,
opaque, flags);
opaque, QED_AIOCB_WRITE);
}
-static BlockDriverAIOCB *bdrv_qed_aio_flush(BlockDriverState *bs,
- BlockDriverCompletionFunc *cb,
- void *opaque)
-{
- return bdrv_aio_flush(bs->file, cb, opaque);
-}
-
typedef struct {
Coroutine *co;
int ret;
int nb_sectors)
{
BlockDriverAIOCB *blockacb;
+ BDRVQEDState *s = bs->opaque;
QEDWriteZeroesCB cb = { .done = false };
QEMUIOVector qiov;
struct iovec iov;
+ /* Refuse if there are untouched backing file sectors */
+ if (bs->backing_hd) {
+ if (qed_offset_into_cluster(s, sector_num * BDRV_SECTOR_SIZE) != 0) {
+ return -ENOTSUP;
+ }
+ if (qed_offset_into_cluster(s, nb_sectors * BDRV_SECTOR_SIZE) != 0) {
+ return -ENOTSUP;
+ }
+ }
+
/* Zero writes start without an I/O buffer. If a buffer becomes necessary
* then it will be allocated during request processing.
*/
memset(bdi, 0, sizeof(*bdi));
bdi->cluster_size = s->header.cluster_size;
+ bdi->is_dirty = s->header.features & QED_F_NEED_CHECK;
return 0;
}
return ret;
}
-static int bdrv_qed_check(BlockDriverState *bs, BdrvCheckResult *result)
+static void bdrv_qed_invalidate_cache(BlockDriverState *bs)
+{
+ BDRVQEDState *s = bs->opaque;
+
+ bdrv_qed_close(bs);
+ memset(s, 0, sizeof(BDRVQEDState));
+ bdrv_qed_open(bs, bs->open_flags);
+}
+
+static int bdrv_qed_check(BlockDriverState *bs, BdrvCheckResult *result,
+ BdrvCheckMode fix)
{
BDRVQEDState *s = bs->opaque;
- return qed_check(s, result, false);
+ return qed_check(s, result, !!fix);
}
static QEMUOptionParameter qed_create_options[] = {
.create_options = qed_create_options,
.bdrv_probe = bdrv_qed_probe,
+ .bdrv_rebind = bdrv_qed_rebind,
.bdrv_open = bdrv_qed_open,
.bdrv_close = bdrv_qed_close,
+ .bdrv_reopen_prepare = bdrv_qed_reopen_prepare,
.bdrv_create = bdrv_qed_create,
.bdrv_co_is_allocated = bdrv_qed_co_is_allocated,
.bdrv_make_empty = bdrv_qed_make_empty,
.bdrv_aio_readv = bdrv_qed_aio_readv,
.bdrv_aio_writev = bdrv_qed_aio_writev,
- .bdrv_aio_flush = bdrv_qed_aio_flush,
.bdrv_co_write_zeroes = bdrv_qed_co_write_zeroes,
.bdrv_truncate = bdrv_qed_truncate,
.bdrv_getlength = bdrv_qed_getlength,
.bdrv_get_info = bdrv_qed_get_info,
.bdrv_change_backing_file = bdrv_qed_change_backing_file,
+ .bdrv_invalidate_cache = bdrv_qed_invalidate_cache,
.bdrv_check = bdrv_qed_check,
};
projects / qemu.git / blobdiff