/* Queue extents, if any, for reopen() */ static int vmdk_reopen_prepare(BDRVReopenState *state, BlockReopenQueue *queue, Error **errp) { BDRVVmdkState *s; int ret = -1; int i; VmdkExtent *e; assert(state != NULL); assert(state->bs != NULL); if (queue == NULL) { error_set(errp, ERROR_CLASS_GENERIC_ERROR, "No reopen queue for VMDK extents"); goto exit; } s = state->bs->opaque; assert(s != NULL); for (i = 0; i < s->num_extents; i++) { e = &s->extents[i]; if (e->file != state->bs->file) { bdrv_reopen_queue(queue, e->file, state->flags); } } ret = 0; exit: return ret; }
void commit_start(BlockDriverState *bs, BlockDriverState *base, BlockDriverState *top, int64_t speed, BlockErrorAction on_error, BlockDriverCompletionFunc *cb, void *opaque, Error **errp) { CommitBlockJob *s; BlockReopenQueue *reopen_queue = NULL; int orig_overlay_flags; int orig_base_flags; BlockDriverState *overlay_bs; Error *local_err = NULL; if ((on_error == BLOCK_ERR_STOP_ANY || on_error == BLOCK_ERR_STOP_ENOSPC) && !bdrv_iostatus_is_enabled(bs)) { error_set(errp, QERR_INVALID_PARAMETER_COMBINATION); return; } /* Once we support top == active layer, remove this check */ if (top == bs) { error_set(errp, QERR_TOP_IS_ACTIVE); return; } if (top == base) { error_set(errp, QERR_TOP_AND_BASE_IDENTICAL); return; } overlay_bs = bdrv_find_overlay(bs, top); if (overlay_bs == NULL) { error_set(errp, QERR_TOP_NOT_FOUND, top->filename); return; } orig_base_flags = bdrv_get_flags(base); orig_overlay_flags = bdrv_get_flags(overlay_bs); /* convert base & overlay_bs to r/w, if necessary */ if (!(orig_base_flags & BDRV_O_RDWR)) { reopen_queue = bdrv_reopen_queue(reopen_queue, base, orig_base_flags | BDRV_O_RDWR); } if (!(orig_overlay_flags & BDRV_O_RDWR)) { reopen_queue = bdrv_reopen_queue(reopen_queue, overlay_bs, orig_overlay_flags | BDRV_O_RDWR); } if (reopen_queue) { bdrv_reopen_multiple(reopen_queue, &local_err); if (local_err != NULL) { error_propagate(errp, local_err); return; } } s = block_job_create(&commit_job_type, bs, speed, cb, opaque); if (!s) { error_set(errp, QERR_DEVICE_IN_USE, bs->device_name); return; } s->base = base; s->top = top; s->active = bs; s->base_flags = orig_base_flags; s->orig_overlay_flags = orig_overlay_flags; s->on_error = on_error; s->common.co = qemu_coroutine_create(commit_run); trace_commit_start(bs, base, top, s, s->common.co, opaque); qemu_coroutine_enter(s->common.co, s); }
void commit_start(BlockDriverState *bs, BlockDriverState *base, BlockDriverState *top, int64_t speed, BlockdevOnError on_error, BlockDriverCompletionFunc *cb, void *opaque, Error **errp) { CommitBlockJob *s; BlockReopenQueue *reopen_queue = NULL; int orig_overlay_flags; int orig_base_flags; BlockDriverState *overlay_bs; Error *local_err = NULL; if ((on_error == BLOCKDEV_ON_ERROR_STOP || on_error == BLOCKDEV_ON_ERROR_ENOSPC) && !bdrv_iostatus_is_enabled(bs)) { error_set(errp, QERR_INVALID_PARAMETER_COMBINATION); return; } /* Once we support top == active layer, remove this check */ if (top == bs) { error_setg(errp, "Top image as the active layer is currently unsupported"); return; } if (top == base) { error_setg(errp, "Invalid files for merge: top and base are the same"); return; } overlay_bs = bdrv_find_overlay(bs, top); if (overlay_bs == NULL) { error_setg(errp, "Could not find overlay image for %s:", top->filename); return; } orig_base_flags = bdrv_get_flags(base); orig_overlay_flags = bdrv_get_flags(overlay_bs); /* convert base & overlay_bs to r/w, if necessary */ if (!(orig_base_flags & BDRV_O_RDWR)) { reopen_queue = bdrv_reopen_queue(reopen_queue, base, orig_base_flags | BDRV_O_RDWR); } if (!(orig_overlay_flags & BDRV_O_RDWR)) { reopen_queue = bdrv_reopen_queue(reopen_queue, overlay_bs, orig_overlay_flags | BDRV_O_RDWR); } if (reopen_queue) { bdrv_reopen_multiple(reopen_queue, &local_err); if (local_err != NULL) { error_propagate(errp, local_err); return; } } s = block_job_create(&commit_job_type, bs, speed, cb, opaque, errp); if (!s) { return; } s->base = base; s->top = top; s->active = bs; s->base_flags = orig_base_flags; s->orig_overlay_flags = orig_overlay_flags; s->on_error = on_error; s->common.co = qemu_coroutine_create(commit_run); trace_commit_start(bs, base, top, s, s->common.co, opaque); qemu_coroutine_enter(s->common.co, s); }