X-Git-Url: https://git.proxmox.com/?p=mirror_qemu.git;a=blobdiff_plain;f=blockdev.c;h=4775a07d930351c4f32d4b6d8fd8807c19ed6314;hp=877e3a26d4bb22cd2dbfb7f13d47e9b9e789fd1f;hb=HEAD;hpb=302823854b078f0525cf1babcc4fc9ff7b7d5f71 diff --git a/blockdev.c b/blockdev.c index 877e3a26d4..08eccc9052 100644 --- a/blockdev.c +++ b/blockdev.c @@ -255,13 +255,13 @@ void drive_check_orphaned(void) * Ignore default drives, because we create certain default * drives unconditionally, then leave them unclaimed. Not the * users fault. - * Ignore IF_VIRTIO, because it gets desugared into -device, - * so we can leave failing to -device. + * Ignore IF_VIRTIO or IF_XEN, because it gets desugared into + * -device, so we can leave failing to -device. * Ignore IF_NONE, because leaving unclaimed IF_NONE remains * available for device_add is a feature. */ if (dinfo->is_default || dinfo->type == IF_VIRTIO - || dinfo->type == IF_NONE) { + || dinfo->type == IF_XEN || dinfo->type == IF_NONE) { continue; } if (!blk_get_attached_dev(blk)) { @@ -662,7 +662,6 @@ err_no_opts: /* Takes the ownership of bs_opts */ BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) { - BlockDriverState *bs; int bdrv_flags = 0; GLOBAL_STATE_CODE(); @@ -677,11 +676,7 @@ BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) bdrv_flags |= BDRV_O_INACTIVE; } - aio_context_acquire(qemu_get_aio_context()); - bs = bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp); - aio_context_release(qemu_get_aio_context()); - - return bs; + return bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp); } void blockdev_close_all_bdrv_states(void) @@ -690,11 +685,7 @@ void blockdev_close_all_bdrv_states(void) GLOBAL_STATE_CODE(); 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); } } @@ -977,6 +968,15 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type, qemu_opt_set(devopts, "driver", "virtio-blk", &error_abort); qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), &error_abort); + } else if (type == IF_XEN) { + QemuOpts *devopts; + devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, + &error_abort); + qemu_opt_set(devopts, "driver", + (media == MEDIA_CDROM) ? "xen-cdrom" : "xen-disk", + &error_abort); + qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), + &error_abort); } filename = qemu_opt_get(legacy_opts, "file"); @@ -1039,7 +1039,6 @@ fail: static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp) { BlockDriverState *bs; - AioContext *aio_context; GRAPH_RDLOCK_GUARD_MAINLOOP(); @@ -1053,16 +1052,11 @@ static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp) return NULL; } - aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(aio_context); - if (!bdrv_is_inserted(bs)) { error_setg(errp, "Device has no medium"); bs = NULL; } - aio_context_release(aio_context); - return bs; } @@ -1132,7 +1126,6 @@ SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, Error **errp) { BlockDriverState *bs; - AioContext *aio_context; QEMUSnapshotInfo sn; Error *local_err = NULL; SnapshotInfo *info = NULL; @@ -1145,39 +1138,35 @@ SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, if (!bs) { return NULL; } - aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(aio_context); if (!id && !name) { error_setg(errp, "Name or id must be provided"); - goto out_aio_context; + return NULL; } if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { - goto out_aio_context; + return NULL; } ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); if (local_err) { error_propagate(errp, local_err); - goto out_aio_context; + return NULL; } if (!ret) { error_setg(errp, "Snapshot with id '%s' and name '%s' does not exist on " "device '%s'", STR_OR_NULL(id), STR_OR_NULL(name), device); - goto out_aio_context; + return NULL; } bdrv_snapshot_delete(bs, id, name, &local_err); if (local_err) { error_propagate(errp, local_err); - goto out_aio_context; + return NULL; } - aio_context_release(aio_context); - info = g_new0(SnapshotInfo, 1); info->id = g_strdup(sn.id_str); info->name = g_strdup(sn.name); @@ -1192,10 +1181,6 @@ SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, } return info; - -out_aio_context: - aio_context_release(aio_context); - return NULL; } /* internal snapshot private data */ @@ -1223,7 +1208,6 @@ static void internal_snapshot_action(BlockdevSnapshotInternal *internal, bool ret; int64_t rt; InternalSnapshotState *state = g_new0(InternalSnapshotState, 1); - AioContext *aio_context; int ret1; GLOBAL_STATE_CODE(); @@ -1239,33 +1223,30 @@ static void internal_snapshot_action(BlockdevSnapshotInternal *internal, return; } - aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(aio_context); - state->bs = bs; /* Paired with .clean() */ bdrv_drained_begin(bs); if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { - goto out; + return; } if (bdrv_is_read_only(bs)) { error_setg(errp, "Device '%s' is read only", device); - goto out; + return; } if (!bdrv_can_snapshot(bs)) { error_setg(errp, "Block format '%s' used by device '%s' " "does not support internal snapshots", bs->drv->format_name, device); - goto out; + return; } if (!strlen(name)) { error_setg(errp, "Name is empty"); - goto out; + return; } /* check whether a snapshot with name exist */ @@ -1273,12 +1254,12 @@ static void internal_snapshot_action(BlockdevSnapshotInternal *internal, &local_err); if (local_err) { error_propagate(errp, local_err); - goto out; + return; } else if (ret) { error_setg(errp, "Snapshot with name '%s' already exists on device '%s'", name, device); - goto out; + return; } /* 3. take the snapshot */ @@ -1299,14 +1280,11 @@ static void internal_snapshot_action(BlockdevSnapshotInternal *internal, error_setg_errno(errp, -ret1, "Failed to create snapshot '%s' on device '%s'", name, device); - goto out; + return; } /* 4. succeed, mark a snapshot is created */ state->created = true; - -out: - aio_context_release(aio_context); } static void internal_snapshot_abort(void *opaque) @@ -1314,7 +1292,6 @@ static void internal_snapshot_abort(void *opaque) InternalSnapshotState *state = opaque; BlockDriverState *bs = state->bs; QEMUSnapshotInfo *sn = &state->sn; - AioContext *aio_context; Error *local_error = NULL; GLOBAL_STATE_CODE(); @@ -1324,9 +1301,6 @@ static void internal_snapshot_abort(void *opaque) return; } - aio_context = bdrv_get_aio_context(state->bs); - aio_context_acquire(aio_context); - if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { error_reportf_err(local_error, "Failed to delete snapshot with id '%s' and " @@ -1334,25 +1308,17 @@ static void internal_snapshot_abort(void *opaque) sn->id_str, sn->name, bdrv_get_device_name(bs)); } - - aio_context_release(aio_context); } static void internal_snapshot_clean(void *opaque) { g_autofree InternalSnapshotState *state = opaque; - AioContext *aio_context; if (!state->bs) { return; } - aio_context = bdrv_get_aio_context(state->bs); - aio_context_acquire(aio_context); - bdrv_drained_end(state->bs); - - aio_context_release(aio_context); } /* external snapshot private data */ @@ -1386,7 +1352,6 @@ static void external_snapshot_action(TransactionAction *action, /* File name of the new image (for 'blockdev-snapshot-sync') */ const char *new_image_file; ExternalSnapshotState *state = g_new0(ExternalSnapshotState, 1); - AioContext *aio_context; uint64_t perm, shared; /* TODO We'll eventually have to take a writer lock in this function */ @@ -1426,26 +1391,24 @@ static void external_snapshot_action(TransactionAction *action, return; } - aio_context = bdrv_get_aio_context(state->old_bs); - aio_context_acquire(aio_context); - /* Paired with .clean() */ bdrv_drained_begin(state->old_bs); if (!bdrv_is_inserted(state->old_bs)) { - error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); - goto out; + error_setg(errp, "Device '%s' has no medium", + bdrv_get_device_or_node_name(state->old_bs)); + return; } if (bdrv_op_is_blocked(state->old_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { - goto out; + return; } if (!bdrv_is_read_only(state->old_bs)) { if (bdrv_flush(state->old_bs)) { error_setg(errp, QERR_IO_ERROR); - goto out; + return; } } @@ -1457,13 +1420,13 @@ static void external_snapshot_action(TransactionAction *action, if (node_name && !snapshot_node_name) { error_setg(errp, "New overlay node-name missing"); - goto out; + return; } if (snapshot_node_name && bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { error_setg(errp, "New overlay node-name already in use"); - goto out; + return; } flags = state->old_bs->open_flags; @@ -1476,20 +1439,18 @@ static void external_snapshot_action(TransactionAction *action, int64_t size = bdrv_getlength(state->old_bs); if (size < 0) { error_setg_errno(errp, -size, "bdrv_getlength failed"); - goto out; + return; } bdrv_refresh_filename(state->old_bs); - aio_context_release(aio_context); bdrv_img_create(new_image_file, format, state->old_bs->filename, state->old_bs->drv->format_name, NULL, size, flags, false, &local_err); - aio_context_acquire(aio_context); if (local_err) { error_propagate(errp, local_err); - goto out; + return; } } @@ -1499,20 +1460,15 @@ static void external_snapshot_action(TransactionAction *action, } qdict_put_str(options, "driver", format); } - aio_context_release(aio_context); - aio_context_acquire(qemu_get_aio_context()); state->new_bs = bdrv_open(new_image_file, snapshot_ref, options, flags, errp); - aio_context_release(qemu_get_aio_context()); /* We will manually add the backing_hd field to the bs later */ if (!state->new_bs) { return; } - aio_context_acquire(aio_context); - /* * Allow attaching a backing file to an overlay that's already in use only * if the parents don't assume that they are already seeing a valid image. @@ -1521,41 +1477,34 @@ static void external_snapshot_action(TransactionAction *action, bdrv_get_cumulative_perm(state->new_bs, &perm, &shared); if (perm & BLK_PERM_CONSISTENT_READ) { error_setg(errp, "The overlay is already in use"); - goto out; + return; } if (state->new_bs->drv->is_filter) { error_setg(errp, "Filters cannot be used as overlays"); - goto out; + return; } if (bdrv_cow_child(state->new_bs)) { error_setg(errp, "The overlay already has a backing image"); - goto out; + return; } if (!state->new_bs->drv->supports_backing) { error_setg(errp, "The overlay does not support backing images"); - goto out; + return; } ret = bdrv_append(state->new_bs, state->old_bs, errp); if (ret < 0) { - goto out; + return; } state->overlay_appended = true; - -out: - aio_context_release(aio_context); } static void external_snapshot_commit(void *opaque) { ExternalSnapshotState *state = opaque; - AioContext *aio_context; - - aio_context = bdrv_get_aio_context(state->old_bs); - aio_context_acquire(aio_context); /* We don't need (or want) to use the transactional * bdrv_reopen_multiple() across all the entries at once, because we @@ -1563,8 +1512,6 @@ static void external_snapshot_commit(void *opaque) if (!qatomic_read(&state->old_bs->copy_on_read)) { bdrv_reopen_set_read_only(state->old_bs, true, NULL); } - - aio_context_release(aio_context); } static void external_snapshot_abort(void *opaque) @@ -1577,7 +1524,6 @@ static void external_snapshot_abort(void *opaque) int ret; aio_context = bdrv_get_aio_context(state->old_bs); - aio_context_acquire(aio_context); bdrv_ref(state->old_bs); /* we can't let bdrv_set_backind_hd() close state->old_bs; we need it */ @@ -1590,21 +1536,18 @@ static void external_snapshot_abort(void *opaque) */ tmp_context = bdrv_get_aio_context(state->old_bs); if (aio_context != tmp_context) { - aio_context_release(aio_context); - aio_context_acquire(tmp_context); - ret = bdrv_try_change_aio_context(state->old_bs, aio_context, NULL, NULL); assert(ret == 0); - - aio_context_release(tmp_context); - aio_context_acquire(aio_context); } + bdrv_drained_begin(state->new_bs); + bdrv_graph_wrlock(); bdrv_replace_node(state->new_bs, state->old_bs, &error_abort); - bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */ + bdrv_graph_wrunlock(); + bdrv_drained_end(state->new_bs); - aio_context_release(aio_context); + bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */ } } } @@ -1612,19 +1555,13 @@ static void external_snapshot_abort(void *opaque) static void external_snapshot_clean(void *opaque) { g_autofree ExternalSnapshotState *state = opaque; - AioContext *aio_context; if (!state->old_bs) { return; } - aio_context = bdrv_get_aio_context(state->old_bs); - aio_context_acquire(aio_context); - bdrv_drained_end(state->old_bs); bdrv_unref(state->new_bs); - - aio_context_release(aio_context); } typedef struct DriveBackupState { @@ -1656,7 +1593,6 @@ static void drive_backup_action(DriveBackup *backup, BlockDriverState *target_bs; BlockDriverState *source = NULL; AioContext *aio_context; - AioContext *old_context; const char *format; QDict *options; Error *local_err = NULL; @@ -1684,7 +1620,6 @@ static void drive_backup_action(DriveBackup *backup, } aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(aio_context); state->bs = bs; /* Paired with .clean() */ @@ -1699,9 +1634,8 @@ static void drive_backup_action(DriveBackup *backup, bdrv_graph_rdlock_main_loop(); if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { bdrv_graph_rdunlock_main_loop(); - goto out; + return; } - bdrv_graph_rdunlock_main_loop(); flags = bs->open_flags | BDRV_O_RDWR; @@ -1726,21 +1660,22 @@ static void drive_backup_action(DriveBackup *backup, flags |= BDRV_O_NO_BACKING; set_backing_hd = true; } + bdrv_graph_rdunlock_main_loop(); size = bdrv_getlength(bs); if (size < 0) { error_setg_errno(errp, -size, "bdrv_getlength failed"); - goto out; + return; } if (backup->mode != NEW_IMAGE_MODE_EXISTING) { assert(format); if (source) { /* Implicit filters should not appear in the filename */ - BlockDriverState *explicit_backing = - bdrv_skip_implicit_filters(source); + BlockDriverState *explicit_backing; bdrv_graph_rdlock_main_loop(); + explicit_backing = bdrv_skip_implicit_filters(source); bdrv_refresh_filename(explicit_backing); bdrv_graph_rdunlock_main_loop(); @@ -1756,7 +1691,7 @@ static void drive_backup_action(DriveBackup *backup, if (local_err) { error_propagate(errp, local_err); - goto out; + return; } options = qdict_new(); @@ -1765,30 +1700,18 @@ static void drive_backup_action(DriveBackup *backup, if (format) { qdict_put_str(options, "driver", format); } - aio_context_release(aio_context); - aio_context_acquire(qemu_get_aio_context()); target_bs = bdrv_open(backup->target, NULL, options, flags, errp); - aio_context_release(qemu_get_aio_context()); - if (!target_bs) { return; } - /* Honor bdrv_try_change_aio_context() context acquisition requirements. */ - old_context = bdrv_get_aio_context(target_bs); - aio_context_acquire(old_context); - ret = bdrv_try_change_aio_context(target_bs, aio_context, NULL, errp); if (ret < 0) { bdrv_unref(target_bs); - aio_context_release(old_context); return; } - aio_context_release(old_context); - aio_context_acquire(aio_context); - if (set_backing_hd) { if (bdrv_set_backing_hd(target_bs, source, errp) < 0) { goto unref; @@ -1801,22 +1724,14 @@ static void drive_backup_action(DriveBackup *backup, unref: bdrv_unref(target_bs); -out: - aio_context_release(aio_context); } static void drive_backup_commit(void *opaque) { DriveBackupState *state = opaque; - AioContext *aio_context; - - aio_context = bdrv_get_aio_context(state->bs); - aio_context_acquire(aio_context); assert(state->job); job_start(&state->job->job); - - aio_context_release(aio_context); } static void drive_backup_abort(void *opaque) @@ -1831,18 +1746,12 @@ static void drive_backup_abort(void *opaque) static void drive_backup_clean(void *opaque) { g_autofree DriveBackupState *state = opaque; - AioContext *aio_context; if (!state->bs) { return; } - aio_context = bdrv_get_aio_context(state->bs); - aio_context_acquire(aio_context); - bdrv_drained_end(state->bs); - - aio_context_release(aio_context); } typedef struct BlockdevBackupState { @@ -1867,7 +1776,6 @@ static void blockdev_backup_action(BlockdevBackup *backup, BlockDriverState *bs; BlockDriverState *target_bs; AioContext *aio_context; - AioContext *old_context; int ret; tran_add(tran, &blockdev_backup_drv, state); @@ -1884,17 +1792,12 @@ static void blockdev_backup_action(BlockdevBackup *backup, /* Honor bdrv_try_change_aio_context() context acquisition requirements. */ aio_context = bdrv_get_aio_context(bs); - old_context = bdrv_get_aio_context(target_bs); - aio_context_acquire(old_context); ret = bdrv_try_change_aio_context(target_bs, aio_context, NULL, errp); if (ret < 0) { - aio_context_release(old_context); return; } - aio_context_release(old_context); - aio_context_acquire(aio_context); state->bs = bs; /* Paired with .clean() */ @@ -1903,22 +1806,14 @@ static void blockdev_backup_action(BlockdevBackup *backup, state->job = do_backup_common(qapi_BlockdevBackup_base(backup), bs, target_bs, aio_context, block_job_txn, errp); - - aio_context_release(aio_context); } static void blockdev_backup_commit(void *opaque) { BlockdevBackupState *state = opaque; - AioContext *aio_context; - - aio_context = bdrv_get_aio_context(state->bs); - aio_context_acquire(aio_context); assert(state->job); job_start(&state->job->job); - - aio_context_release(aio_context); } static void blockdev_backup_abort(void *opaque) @@ -1933,18 +1828,12 @@ static void blockdev_backup_abort(void *opaque) static void blockdev_backup_clean(void *opaque) { g_autofree BlockdevBackupState *state = opaque; - AioContext *aio_context; if (!state->bs) { return; } - aio_context = bdrv_get_aio_context(state->bs); - aio_context_acquire(aio_context); - bdrv_drained_end(state->bs); - - aio_context_release(aio_context); } typedef struct BlockDirtyBitmapState { @@ -2364,8 +2253,7 @@ void coroutine_fn qmp_block_resize(const char *device, const char *node_name, } bdrv_graph_co_rdlock(); - if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { - error_setg(errp, QERR_DEVICE_IN_USE, device); + if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, errp)) { bdrv_graph_co_rdunlock(); return; } @@ -2376,24 +2264,22 @@ void coroutine_fn qmp_block_resize(const char *device, const char *node_name, return; } - bdrv_co_lock(bs); bdrv_drained_begin(bs); - bdrv_co_unlock(bs); old_ctx = bdrv_co_enter(bs); blk_co_truncate(blk, size, false, PREALLOC_MODE_OFF, 0, errp); bdrv_co_leave(bs, old_ctx); - bdrv_co_lock(bs); bdrv_drained_end(bs); blk_co_unref(blk); - bdrv_co_unlock(bs); } void qmp_block_stream(const char *job_id, const char *device, const char *base, const char *base_node, const char *backing_file, + bool has_backing_mask_protocol, + bool backing_mask_protocol, const char *bottom, bool has_speed, int64_t speed, bool has_on_error, BlockdevOnError on_error, @@ -2429,6 +2315,10 @@ void qmp_block_stream(const char *job_id, const char *device, return; } + if (!has_backing_mask_protocol) { + backing_mask_protocol = false; + } + if (!has_on_error) { on_error = BLOCKDEV_ON_ERROR_REPORT; } @@ -2439,13 +2329,13 @@ void qmp_block_stream(const char *job_id, const char *device, } aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(aio_context); + bdrv_graph_rdlock_main_loop(); if (base) { base_bs = bdrv_find_backing_image(bs, base); if (base_bs == NULL) { error_setg(errp, "Can't find '%s' in the backing chain", base); - goto out; + goto out_rdlock; } assert(bdrv_get_aio_context(base_bs) == aio_context); } @@ -2453,38 +2343,36 @@ void qmp_block_stream(const char *job_id, const char *device, if (base_node) { base_bs = bdrv_lookup_bs(NULL, base_node, errp); if (!base_bs) { - goto out; + goto out_rdlock; } if (bs == base_bs || !bdrv_chain_contains(bs, base_bs)) { error_setg(errp, "Node '%s' is not a backing image of '%s'", base_node, device); - goto out; + goto out_rdlock; } assert(bdrv_get_aio_context(base_bs) == aio_context); - bdrv_graph_rdlock_main_loop(); bdrv_refresh_filename(base_bs); - bdrv_graph_rdunlock_main_loop(); } if (bottom) { bottom_bs = bdrv_lookup_bs(NULL, bottom, errp); if (!bottom_bs) { - goto out; + goto out_rdlock; } if (!bottom_bs->drv) { error_setg(errp, "Node '%s' is not open", bottom); - goto out; + goto out_rdlock; } if (bottom_bs->drv->is_filter) { error_setg(errp, "Node '%s' is a filter, use a non-filter node " "as 'bottom'", bottom); - goto out; + goto out_rdlock; } if (!bdrv_chain_contains(bs, bottom_bs)) { error_setg(errp, "Node '%s' is not in a chain starting from '%s'", bottom, device); - goto out; + goto out_rdlock; } assert(bdrv_get_aio_context(bottom_bs) == aio_context); } @@ -2493,13 +2381,11 @@ void qmp_block_stream(const char *job_id, const char *device, * Check for op blockers in the whole chain between bs and base (or bottom) */ iter_end = bottom ? bdrv_filter_or_cow_bs(bottom_bs) : base_bs; - bdrv_graph_rdlock_main_loop(); for (iter = bs; iter && iter != iter_end; iter = bdrv_filter_or_cow_bs(iter)) { if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_STREAM, errp)) { - bdrv_graph_rdunlock_main_loop(); - goto out; + goto out_rdlock; } } bdrv_graph_rdunlock_main_loop(); @@ -2509,7 +2395,7 @@ void qmp_block_stream(const char *job_id, const char *device, if (!base_bs && backing_file) { error_setg(errp, "backing file specified, but streaming the " "entire chain"); - goto out; + return; } if (has_auto_finalize && !auto_finalize) { @@ -2520,17 +2406,19 @@ void qmp_block_stream(const char *job_id, const char *device, } stream_start(job_id, bs, base_bs, backing_file, + backing_mask_protocol, bottom_bs, job_flags, has_speed ? speed : 0, on_error, filter_node_name, &local_err); if (local_err) { error_propagate(errp, local_err); - goto out; + return; } trace_qmp_block_stream(bs); + return; -out: - aio_context_release(aio_context); +out_rdlock: + bdrv_graph_rdunlock_main_loop(); } void qmp_block_commit(const char *job_id, const char *device, @@ -2539,6 +2427,8 @@ void qmp_block_commit(const char *job_id, const char *device, const char *top_node, const char *top, const char *backing_file, + bool has_backing_mask_protocol, + bool backing_mask_protocol, bool has_speed, int64_t speed, bool has_on_error, BlockdevOnError on_error, const char *filter_node_name, @@ -2569,6 +2459,9 @@ void qmp_block_commit(const char *job_id, const char *device, if (has_auto_dismiss && !auto_dismiss) { job_flags |= JOB_MANUAL_DISMISS; } + if (!has_backing_mask_protocol) { + backing_mask_protocol = false; + } /* Important Note: * libvirt relies on the DeviceNotFound error class in order to probe for @@ -2589,10 +2482,9 @@ void qmp_block_commit(const char *job_id, const char *device, } aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(aio_context); if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { - goto out; + return; } /* default top_bs is the active layer */ @@ -2600,16 +2492,16 @@ void qmp_block_commit(const char *job_id, const char *device, if (top_node && top) { error_setg(errp, "'top-node' and 'top' are mutually exclusive"); - goto out; + return; } else if (top_node) { top_bs = bdrv_lookup_bs(NULL, top_node, errp); if (top_bs == NULL) { - goto out; + return; } if (!bdrv_chain_contains(bs, top_bs)) { error_setg(errp, "'%s' is not in this backing file chain", top_node); - goto out; + return; } } else if (top) { /* This strcmp() is just a shortcut, there is no need to @@ -2623,35 +2515,35 @@ void qmp_block_commit(const char *job_id, const char *device, if (top_bs == NULL) { error_setg(errp, "Top image file %s not found", top ? top : "NULL"); - goto out; + return; } assert(bdrv_get_aio_context(top_bs) == aio_context); if (base_node && base) { error_setg(errp, "'base-node' and 'base' are mutually exclusive"); - goto out; + return; } else if (base_node) { base_bs = bdrv_lookup_bs(NULL, base_node, errp); if (base_bs == NULL) { - goto out; + return; } if (!bdrv_chain_contains(top_bs, base_bs)) { error_setg(errp, "'%s' is not in this backing file chain", base_node); - goto out; + return; } } else if (base) { base_bs = bdrv_find_backing_image(top_bs, base); if (base_bs == NULL) { error_setg(errp, "Can't find '%s' in the backing chain", base); - goto out; + return; } } else { base_bs = bdrv_find_base(top_bs); if (base_bs == NULL) { error_setg(errp, "There is no backimg image"); - goto out; + return; } } @@ -2661,14 +2553,14 @@ void qmp_block_commit(const char *job_id, const char *device, iter = bdrv_filter_or_cow_bs(iter)) { if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { - goto out; + return; } } /* Do not allow attempts to commit an image into itself */ if (top_bs == base_bs) { error_setg(errp, "cannot commit an image into itself"); - goto out; + return; } /* @@ -2691,7 +2583,7 @@ void qmp_block_commit(const char *job_id, const char *device, error_setg(errp, "'backing-file' specified, but 'top' has a " "writer on it"); } - goto out; + return; } if (!job_id) { /* @@ -2707,19 +2599,17 @@ void qmp_block_commit(const char *job_id, const char *device, } else { BlockDriverState *overlay_bs = bdrv_find_overlay(bs, top_bs); if (bdrv_op_is_blocked(overlay_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { - goto out; + return; } commit_start(job_id, bs, base_bs, top_bs, job_flags, speed, on_error, backing_file, + backing_mask_protocol, filter_node_name, &local_err); } if (local_err != NULL) { error_propagate(errp, local_err); - goto out; + return; } - -out: - aio_context_release(aio_context); } /* Common QMP interface for drive-backup and blockdev-backup */ @@ -2968,8 +2858,6 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs, if (replaces) { BlockDriverState *to_replace_bs; - AioContext *aio_context; - AioContext *replace_aio_context; int64_t bs_size, replace_size; bs_size = bdrv_getlength(bs); @@ -2983,19 +2871,7 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs, return; } - aio_context = bdrv_get_aio_context(bs); - replace_aio_context = bdrv_get_aio_context(to_replace_bs); - /* - * bdrv_getlength() is a co-wrapper and uses AIO_WAIT_WHILE. Be sure not - * to acquire the same AioContext twice. - */ - if (replace_aio_context != aio_context) { - aio_context_acquire(replace_aio_context); - } replace_size = bdrv_getlength(to_replace_bs); - if (replace_aio_context != aio_context) { - aio_context_release(replace_aio_context); - } if (replace_size < 0) { error_setg_errno(errp, -replace_size, @@ -3024,7 +2900,6 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp) BlockDriverState *bs; BlockDriverState *target_backing_bs, *target_bs; AioContext *aio_context; - AioContext *old_context; BlockMirrorBackingMode backing_mode; Error *local_err = NULL; QDict *options = NULL; @@ -3045,10 +2920,8 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp) bdrv_graph_rdunlock_main_loop(); return; } - bdrv_graph_rdunlock_main_loop(); aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(aio_context); if (!arg->has_mode) { arg->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; @@ -3067,18 +2940,19 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp) if (arg->sync == MIRROR_SYNC_MODE_NONE) { target_backing_bs = bs; } + bdrv_graph_rdunlock_main_loop(); size = bdrv_getlength(bs); if (size < 0) { error_setg_errno(errp, -size, "bdrv_getlength failed"); - goto out; + return; } if (arg->replaces) { if (!arg->node_name) { error_setg(errp, "a node-name must be provided when replacing a" " named node of the graph"); - goto out; + return; } } @@ -3099,16 +2973,18 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp) bdrv_img_create(arg->target, format, NULL, NULL, NULL, size, flags, false, &local_err); } else { - /* Implicit filters should not appear in the filename */ - BlockDriverState *explicit_backing = - bdrv_skip_implicit_filters(target_backing_bs); + BlockDriverState *explicit_backing; switch (arg->mode) { case NEW_IMAGE_MODE_EXISTING: break; case NEW_IMAGE_MODE_ABSOLUTE_PATHS: - /* create new image with backing file */ + /* + * Create new image with backing file. + * Implicit filters should not appear in the filename. + */ bdrv_graph_rdlock_main_loop(); + explicit_backing = bdrv_skip_implicit_filters(target_backing_bs); bdrv_refresh_filename(explicit_backing); bdrv_graph_rdunlock_main_loop(); @@ -3124,7 +3000,7 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp) if (local_err) { error_propagate(errp, local_err); - goto out; + return; } options = qdict_new(); @@ -3134,38 +3010,28 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp) if (format) { qdict_put_str(options, "driver", format); } - aio_context_release(aio_context); /* Mirroring takes care of copy-on-write using the source's backing * file. */ - aio_context_acquire(qemu_get_aio_context()); target_bs = bdrv_open(arg->target, NULL, options, flags, errp); - aio_context_release(qemu_get_aio_context()); - if (!target_bs) { return; } + bdrv_graph_rdlock_main_loop(); zero_target = (arg->sync == MIRROR_SYNC_MODE_FULL && (arg->mode == NEW_IMAGE_MODE_EXISTING || !bdrv_has_zero_init(target_bs))); + bdrv_graph_rdunlock_main_loop(); - /* Honor bdrv_try_change_aio_context() context acquisition requirements. */ - old_context = bdrv_get_aio_context(target_bs); - aio_context_acquire(old_context); - ret = bdrv_try_change_aio_context(target_bs, aio_context, NULL, errp); if (ret < 0) { bdrv_unref(target_bs); - aio_context_release(old_context); return; } - aio_context_release(old_context); - aio_context_acquire(aio_context); - blockdev_mirror_common(arg->job_id, bs, target_bs, arg->replaces, arg->sync, backing_mode, zero_target, @@ -3181,8 +3047,6 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp) arg->has_auto_dismiss, arg->auto_dismiss, errp); bdrv_unref(target_bs); -out: - aio_context_release(aio_context); } void qmp_blockdev_mirror(const char *job_id, @@ -3205,7 +3069,6 @@ void qmp_blockdev_mirror(const char *job_id, BlockDriverState *bs; BlockDriverState *target_bs; AioContext *aio_context; - AioContext *old_context; BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN; bool zero_target; int ret; @@ -3222,18 +3085,11 @@ void qmp_blockdev_mirror(const char *job_id, zero_target = (sync == MIRROR_SYNC_MODE_FULL); - /* Honor bdrv_try_change_aio_context() context acquisition requirements. */ - old_context = bdrv_get_aio_context(target_bs); aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(old_context); ret = bdrv_try_change_aio_context(target_bs, aio_context, NULL, errp); - - aio_context_release(old_context); - aio_context_acquire(aio_context); - if (ret < 0) { - goto out; + return; } blockdev_mirror_common(job_id, bs, target_bs, @@ -3248,8 +3104,6 @@ void qmp_blockdev_mirror(const char *job_id, has_auto_finalize, auto_finalize, has_auto_dismiss, auto_dismiss, errp); -out: - aio_context_release(aio_context); } /* @@ -3392,13 +3246,26 @@ void qmp_block_job_dismiss(const char *id, Error **errp) job_dismiss_locked(&job, errp); } +void qmp_block_job_change(BlockJobChangeOptions *opts, Error **errp) +{ + BlockJob *job; + + JOB_LOCK_GUARD(); + job = find_block_job_locked(opts->id, errp); + + if (!job) { + return; + } + + block_job_change_locked(job, opts, errp); +} + void qmp_change_backing_file(const char *device, const char *image_node_name, const char *backing_file, Error **errp) { BlockDriverState *bs = NULL; - AioContext *aio_context; BlockDriverState *image_bs = NULL; Error *local_err = NULL; bool ro; @@ -3409,48 +3276,45 @@ void qmp_change_backing_file(const char *device, return; } - aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(aio_context); + bdrv_graph_rdlock_main_loop(); image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); if (local_err) { error_propagate(errp, local_err); - goto out; + goto out_rdlock; } if (!image_bs) { error_setg(errp, "image file not found"); - goto out; + goto out_rdlock; } if (bdrv_find_base(image_bs) == image_bs) { error_setg(errp, "not allowing backing file change on an image " "without a backing file"); - goto out; + goto out_rdlock; } /* even though we are not necessarily operating on bs, we need it to * determine if block ops are currently prohibited on the chain */ - bdrv_graph_rdlock_main_loop(); if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { - bdrv_graph_rdunlock_main_loop(); - goto out; + goto out_rdlock; } - bdrv_graph_rdunlock_main_loop(); /* final sanity check */ if (!bdrv_chain_contains(bs, image_bs)) { error_setg(errp, "'%s' and image file are not in the same chain", device); - goto out; + goto out_rdlock; } + bdrv_graph_rdunlock_main_loop(); /* if not r/w, reopen to make r/w */ ro = bdrv_is_read_only(image_bs); if (ro) { if (bdrv_reopen_set_read_only(image_bs, false, errp) != 0) { - goto out; + return; } } @@ -3468,9 +3332,10 @@ void qmp_change_backing_file(const char *device, if (ro) { bdrv_reopen_set_read_only(image_bs, true, errp); } + return; -out: - aio_context_release(aio_context); +out_rdlock: + bdrv_graph_rdunlock_main_loop(); } void qmp_blockdev_add(BlockdevOptions *options, Error **errp) @@ -3510,7 +3375,6 @@ void qmp_blockdev_reopen(BlockdevOptionsList *reopen_list, Error **errp) for (; reopen_list != NULL; reopen_list = reopen_list->next) { BlockdevOptions *options = reopen_list->value; BlockDriverState *bs; - AioContext *ctx; QObject *obj; Visitor *v; QDict *qdict; @@ -3538,12 +3402,7 @@ void qmp_blockdev_reopen(BlockdevOptionsList *reopen_list, Error **errp) qdict_flatten(qdict); - ctx = bdrv_get_aio_context(bs); - aio_context_acquire(ctx); - queue = bdrv_reopen_queue(queue, bs, qdict, false); - - aio_context_release(ctx); } /* Perform the reopen operation */ @@ -3556,7 +3415,6 @@ fail: void qmp_blockdev_del(const char *node_name, Error **errp) { - AioContext *aio_context; BlockDriverState *bs; GLOBAL_STATE_CODE(); @@ -3571,30 +3429,25 @@ void qmp_blockdev_del(const char *node_name, Error **errp) error_setg(errp, "Node %s is in use", node_name); return; } - aio_context = bdrv_get_aio_context(bs); - aio_context_acquire(aio_context); if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { - goto out; + return; } if (!QTAILQ_IN_USE(bs, monitor_list)) { error_setg(errp, "Node %s is not owned by the monitor", bs->node_name); - goto out; + return; } if (bs->refcnt > 1) { error_setg(errp, "Block device %s is in use", bdrv_get_device_or_node_name(bs)); - goto out; + return; } QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); bdrv_unref(bs); - -out: - aio_context_release(aio_context); } static BdrvChild * GRAPH_RDLOCK @@ -3617,7 +3470,7 @@ void qmp_x_blockdev_change(const char *parent, const char *child, BlockDriverState *parent_bs, *new_bs = NULL; BdrvChild *p_child; - bdrv_graph_wrlock(NULL); + bdrv_graph_wrlock(); parent_bs = bdrv_lookup_bs(parent, parent, errp); if (!parent_bs) { @@ -3684,7 +3537,6 @@ BlockJobInfoList *qmp_query_block_jobs(Error **errp) void qmp_x_blockdev_set_iothread(const char *node_name, StrOrNull *iothread, bool has_force, bool force, Error **errp) { - AioContext *old_context; AioContext *new_context; BlockDriverState *bs; @@ -3716,12 +3568,7 @@ void qmp_x_blockdev_set_iothread(const char *node_name, StrOrNull *iothread, new_context = qemu_get_aio_context(); } - old_context = bdrv_get_aio_context(bs); - aio_context_acquire(old_context); - bdrv_try_change_aio_context(bs, new_context, NULL, errp); - - aio_context_release(old_context); } QemuOptsList qemu_common_drive_opts = {