Exemplo n.º 1
0
/*
 * __meta_track_apply --
 *	Apply the changes in a metadata tracking record.
 */
static int
__meta_track_apply(WT_SESSION_IMPL *session, WT_META_TRACK *trk)
{
	WT_BM *bm;
	WT_BTREE *btree;
	WT_DECL_RET;

	switch (trk->op) {
	case WT_ST_EMPTY:	/* Unused slot */
		break;
	case WT_ST_CHECKPOINT:	/* Checkpoint, see above */
		btree = trk->dhandle->handle;
		bm = btree->bm;
		WT_WITH_DHANDLE(session, trk->dhandle,
		    ret = bm->checkpoint_resolve(bm, session));
		break;
	case WT_ST_DROP_COMMIT:
		if ((ret =
		    __wt_block_manager_drop(session, trk->a, false)) != 0)
			__wt_err(session, ret,
			    "metadata remove dropped file %s", trk->a);
		break;
	case WT_ST_LOCK:
		WT_WITH_DHANDLE(session, trk->dhandle,
		    ret = __wt_session_release_btree(session));
		break;
	case WT_ST_FILEOP:
	case WT_ST_REMOVE:
	case WT_ST_SET:
		break;
	}

	__meta_track_clear(session, trk);
	return (ret);
}
Exemplo n.º 2
0
/*
 * __meta_track_apply --
 *	Apply the changes in a metadata tracking record.
 */
static int
__meta_track_apply(WT_SESSION_IMPL *session, WT_META_TRACK *trk, int unroll)
{
	WT_BM *bm;
	WT_BTREE *btree;
	WT_DECL_RET;
	int tret;

	/*
	 * Unlock handles and complete checkpoints regardless of whether we are
	 * unrolling.
	 */
	if (!unroll && trk->op != WT_ST_CHECKPOINT && trk->op != WT_ST_LOCK)
		goto free;

	switch (trk->op) {
	case WT_ST_EMPTY:	/* Unused slot */
		break;
	case WT_ST_CHECKPOINT:	/* Checkpoint, see above */
		if (!unroll) {
			btree = trk->dhandle->handle;
			bm = btree->bm;
			WT_WITH_DHANDLE(session, trk->dhandle,
			    WT_TRET(bm->checkpoint_resolve(bm, session)));
		}
		break;
	case WT_ST_LOCK:	/* Handle lock, see above */
		if (unroll && trk->created)
			F_SET(trk->dhandle, WT_DHANDLE_DISCARD);
		WT_WITH_DHANDLE(session, trk->dhandle,
		    WT_TRET(__wt_session_release_btree(session)));
		break;
	case WT_ST_FILEOP:	/* File operation */
		/*
		 * For renames, both a and b are set.
		 * For creates, a is NULL.
		 * For removes, b is NULL.
		 */
		if (trk->a != NULL && trk->b != NULL &&
		    (tret = __wt_rename(session,
		    trk->b + strlen("file:"),
		    trk->a + strlen("file:"))) != 0) {
			__wt_err(session, tret,
			    "metadata unroll rename %s to %s",
			    trk->b, trk->a);
			WT_TRET(tret);
		} else if (trk->a == NULL) {
			if ((tret = __wt_remove(session,
			    trk->b + strlen("file:"))) != 0) {
				__wt_err(session, tret,
				    "metadata unroll create %s",
				    trk->b);
				WT_TRET(tret);
			}
		}
		/*
		 * We can't undo removes yet: that would imply
		 * some kind of temporary rename and remove in
		 * roll forward.
		 */
		break;
	case WT_ST_REMOVE:	/* Remove trk.a */
		if ((tret = __wt_metadata_remove(session, trk->a)) != 0) {
			__wt_err(session, tret,
			    "metadata unroll remove: %s",
			    trk->a);
			WT_TRET(tret);
		}
		break;
	case WT_ST_SET:		/* Set trk.a to trk.b */
		if ((tret = __wt_metadata_update(
		    session, trk->a, trk->b)) != 0) {
			__wt_err(session, tret,
			    "metadata unroll update %s to %s",
			    trk->a, trk->b);
			WT_TRET(tret);
		}
		break;
	WT_ILLEGAL_VALUE(session);
	}

free:	trk->op = WT_ST_EMPTY;
	__wt_free(session, trk->a);
	__wt_free(session, trk->b);
	trk->dhandle = NULL;

	return (ret);
}
Exemplo n.º 3
0
/*
 * __meta_track_unroll --
 *	Undo the changes in a metadata tracking record.
 */
static int
__meta_track_unroll(WT_SESSION_IMPL *session, WT_META_TRACK *trk)
{
	WT_BM *bm;
	WT_BTREE *btree;
	WT_DECL_RET;

	switch (trk->op) {
	case WT_ST_EMPTY:	/* Unused slot */
		break;
	case WT_ST_CHECKPOINT:	/* Checkpoint, see above */
		btree = trk->dhandle->handle;
		bm = btree->bm;
		WT_WITH_DHANDLE(session, trk->dhandle,
		    ret = bm->checkpoint_resolve(bm, session, true));
		break;
	case WT_ST_DROP_COMMIT:
		break;
	case WT_ST_LOCK:	/* Handle lock, see above */
		if (trk->created)
			F_SET(trk->dhandle, WT_DHANDLE_DISCARD);
		WT_WITH_DHANDLE(session, trk->dhandle,
		    ret = __wt_session_release_dhandle(session));
		break;
	case WT_ST_FILEOP:	/* File operation */
		/*
		 * For renames, both a and b are set.
		 * For creates, a is NULL.
		 * For removes, b is NULL.
		 */
		if (trk->a != NULL && trk->b != NULL &&
		    (ret = __wt_fs_rename(session,
		    trk->b + strlen("file:"), trk->a + strlen("file:"),
		    true)) != 0)
			__wt_err(session, ret,
			    "metadata unroll rename %s to %s", trk->b, trk->a);

		if (trk->a == NULL &&
		    (ret = __wt_fs_remove(session,
		    trk->b + strlen("file:"), false)) != 0)
			__wt_err(session, ret,
			    "metadata unroll create %s", trk->b);

		/*
		 * We can't undo removes yet: that would imply
		 * some kind of temporary rename and remove in
		 * roll forward.
		 */
		break;
	case WT_ST_REMOVE:	/* Remove trk.a */
		if ((ret = __wt_metadata_remove(session, trk->a)) != 0)
			__wt_err(session, ret,
			    "metadata unroll remove: %s", trk->a);
		break;
	case WT_ST_SET:		/* Set trk.a to trk.b */
		if ((ret = __wt_metadata_update(session, trk->a, trk->b)) != 0)
			__wt_err(session, ret,
			    "metadata unroll update %s to %s", trk->a, trk->b);
		break;
	}

	__meta_track_clear(session, trk);
	return (ret);
}