#include "module.h"
#include <zlib.h>
#include "aes.h"
+#include "migration.h"
/**************************************************************/
/* QEMU COW block driver with compression and encryption support */
AES_KEY aes_encrypt_key;
AES_KEY aes_decrypt_key;
CoMutex lock;
+ Error *migration_blocker;
} BDRVQcowState;
static int decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset);
bs->backing_file[len] = '\0';
}
+ /* Disable migration when qcow images are used */
+ error_set(&s->migration_blocker,
+ QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED,
+ "qcow", bs->device_name, "live migration");
+ migrate_add_blocker(s->migration_blocker);
+
qemu_co_mutex_init(&s->lock);
return 0;
return cluster_offset;
}
-static int qcow_is_allocated(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors, int *pnum)
+static int coroutine_fn qcow_co_is_allocated(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors, int *pnum)
{
BDRVQcowState *s = bs->opaque;
int index_in_cluster, n;
uint64_t cluster_offset;
+ qemu_co_mutex_lock(&s->lock);
cluster_offset = get_cluster_offset(bs, sector_num << 9, 0, 0, 0, 0);
+ qemu_co_mutex_unlock(&s->lock);
index_in_cluster = sector_num & (s->cluster_sectors - 1);
n = s->cluster_sectors - index_in_cluster;
if (n > nb_sectors)
return 0;
}
-static int qcow_co_readv(BlockDriverState *bs, int64_t sector_num,
+static coroutine_fn int qcow_co_readv(BlockDriverState *bs, int64_t sector_num,
int nb_sectors, QEMUIOVector *qiov)
{
BDRVQcowState *s = bs->opaque;
goto done;
}
-static int qcow_co_writev(BlockDriverState *bs, int64_t sector_num,
+static coroutine_fn int qcow_co_writev(BlockDriverState *bs, int64_t sector_num,
int nb_sectors, QEMUIOVector *qiov)
{
BDRVQcowState *s = bs->opaque;
static void qcow_close(BlockDriverState *bs)
{
BDRVQcowState *s = bs->opaque;
+
g_free(s->l1_table);
g_free(s->l2_cache);
g_free(s->cluster_cache);
g_free(s->cluster_data);
+
+ migrate_del_blocker(s->migration_blocker);
+ error_free(s->migration_blocker);
}
static int qcow_create(const char *filename, QEMUOptionParameter *options)
.bdrv_co_readv = qcow_co_readv,
.bdrv_co_writev = qcow_co_writev,
.bdrv_co_flush_to_disk = qcow_co_flush,
- .bdrv_is_allocated = qcow_is_allocated,
+ .bdrv_co_is_allocated = qcow_co_is_allocated,
.bdrv_set_key = qcow_set_key,
.bdrv_make_empty = qcow_make_empty,