diff options
Diffstat (limited to 'blockdev.c')
| -rw-r--r-- | blockdev.c | 182 |
1 files changed, 158 insertions, 24 deletions
diff --git a/blockdev.c b/blockdev.c index 99828ad2bd..a068a4b669 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1056,20 +1056,6 @@ void qmp_block_resize(const char *device, int64_t size, Error **errp) } } -static QObject *qobject_from_block_job(BlockJob *job) -{ - return qobject_from_jsonf("{ 'type': %s," - "'device': %s," - "'len': %" PRId64 "," - "'offset': %" PRId64 "," - "'speed': %" PRId64 " }", - job->job_type->job_type, - bdrv_get_device_name(job->bs), - job->len, - job->offset, - job->speed); -} - static void block_job_cb(void *opaque, int ret) { BlockDriverState *bs = opaque; @@ -1157,16 +1143,6 @@ void qmp_block_commit(const char *device, error_set(errp, QERR_DEVICE_NOT_FOUND, device); return; } - if (base && has_base) { - base_bs = bdrv_find_backing_image(bs, base); - } else { - base_bs = bdrv_find_base(bs); - } - - if (base_bs == NULL) { - error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); - return; - } /* default top_bs is the active layer */ top_bs = bs; @@ -1182,6 +1158,17 @@ void qmp_block_commit(const char *device, return; } + if (has_base && base) { + base_bs = bdrv_find_backing_image(top_bs, base); + } else { + base_bs = bdrv_find_base(top_bs); + } + + if (base_bs == NULL) { + error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); + return; + } + commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, &local_err); if (local_err != NULL) { @@ -1194,6 +1181,140 @@ void qmp_block_commit(const char *device, drive_get_ref(drive_get_by_blockdev(bs)); } +void qmp_drive_mirror(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_on_source_error, BlockdevOnError on_source_error, + bool has_on_target_error, BlockdevOnError on_target_error, + Error **errp) +{ + BlockDriverInfo bdi; + BlockDriverState *bs; + BlockDriverState *source, *target_bs; + BlockDriver *proto_drv; + BlockDriver *drv = NULL; + Error *local_err = NULL; + int flags; + uint64_t size; + int ret; + + if (!has_speed) { + speed = 0; + } + if (!has_on_source_error) { + on_source_error = BLOCKDEV_ON_ERROR_REPORT; + } + if (!has_on_target_error) { + on_target_error = BLOCKDEV_ON_ERROR_REPORT; + } + if (!has_mode) { + mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; + } + + bs = bdrv_find(device); + if (!bs) { + error_set(errp, QERR_DEVICE_NOT_FOUND, device); + return; + } + + if (!bdrv_is_inserted(bs)) { + error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); + return; + } + + if (!has_format) { + format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; + } + if (format) { + drv = bdrv_find_format(format); + if (!drv) { + error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); + return; + } + } + + if (bdrv_in_use(bs)) { + error_set(errp, QERR_DEVICE_IN_USE, device); + return; + } + + flags = bs->open_flags | BDRV_O_RDWR; + source = bs->backing_hd; + if (!source && sync == MIRROR_SYNC_MODE_TOP) { + sync = MIRROR_SYNC_MODE_FULL; + } + + proto_drv = bdrv_find_protocol(target); + if (!proto_drv) { + error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); + return; + } + + if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) { + /* create new image w/o backing file */ + assert(format && drv); + bdrv_get_geometry(bs, &size); + size *= 512; + ret = bdrv_img_create(target, format, + NULL, NULL, NULL, size, flags); + } else { + switch (mode) { + case NEW_IMAGE_MODE_EXISTING: + ret = 0; + break; + case NEW_IMAGE_MODE_ABSOLUTE_PATHS: + /* create new image with backing file */ + ret = bdrv_img_create(target, format, + source->filename, + source->drv->format_name, + NULL, -1, flags); + break; + default: + abort(); + } + } + + if (ret) { + error_set(errp, QERR_OPEN_FILE_FAILED, target); + return; + } + + target_bs = bdrv_new(""); + ret = bdrv_open(target_bs, target, flags | BDRV_O_NO_BACKING, drv); + + if (ret < 0) { + bdrv_delete(target_bs); + error_set(errp, QERR_OPEN_FILE_FAILED, target); + return; + } + + /* We need a backing file if we will copy parts of a cluster. */ + if (bdrv_get_info(target_bs, &bdi) >= 0 && bdi.cluster_size != 0 && + bdi.cluster_size >= BDRV_SECTORS_PER_DIRTY_CHUNK * 512) { + ret = bdrv_open_backing_file(target_bs); + if (ret < 0) { + bdrv_delete(target_bs); + error_set(errp, QERR_OPEN_FILE_FAILED, target); + return; + } + } + + mirror_start(bs, target_bs, speed, sync, on_source_error, on_target_error, + block_job_cb, bs, &local_err); + if (local_err != NULL) { + bdrv_delete(target_bs); + error_propagate(errp, local_err); + return; + } + + /* Grab a reference so hotplug does not delete the BlockDriverState from + * underneath us. + */ + drive_get_ref(drive_get_by_blockdev(bs)); +} + static BlockJob *find_block_job(const char *device) { BlockDriverState *bs; @@ -1265,6 +1386,19 @@ void qmp_block_job_resume(const char *device, Error **errp) block_job_resume(job); } +void qmp_block_job_complete(const char *device, Error **errp) +{ + BlockJob *job = find_block_job(device); + + if (!job) { + error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); + return; + } + + trace_qmp_block_job_complete(job); + block_job_complete(job, errp); +} + static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) { BlockJobInfoList **prev = opaque; |