chunk文件的自动扩展

设置chunk文件自动扩展：

EXECUTE FUNCTION task("modify chunk extendable", "chunk number");

禁用chunk文件自动扩展：

EXECUTE FUNCTION task("modify chunk extendable off", "chunk number");

创建一个存储池：

EXECUTE FUNCTION task("storagepool add", "path", "begin_offset", "total_size", "chunk size",priority");

EXECUTE FUNCTION task("storagepool add", "/inst/dbspaces", "0", "0", "50000","1");

修改一个存储池：

EXECUTE FUNCTION task("storagepool modify", "storage_pool_entry_id", "new_total_size","new_chunk size", "new_priority");

EXECUTE FUNCTION task("storagepool modify", "8", "10 GB", "10000", "2");

删除存储池的一个：

EXECUTE FUNCTION task("storagepool delete", "storage_pool_entry_id");

EXECUTE FUNCTION task("storagepool delete", "7");

删除存储池的所有条目：

EXECUTE FUNCTION task("storagepool purge all");

删除所有装满的存储池条目：

EXECUTE FUNCTION task("storagepool purge full");

删除具有错误的存储池条目：

EXECUTE FUNCTION task("storagepool purge errors");

将区块12扩大5000KB：

EXECUTE FUNCTION task("modify chunk extend", "12", "5000");