公开(公告)号：WO2014158213A1

公开(公告)日：2014-10-02

申请号：PCT/US2013/058834

申请日：2013-09-09

Applicant: MICROSOFT CORPORATION

Inventor： GARSON, Matt ,  CHRISTIANSEN, Neal ,  HAVEWALA, Sarosh ,  RAJPAL, Shiv ,  MEHRA, Karan ,  VERMA, Surendra ,  CHAN, Daniel

IPC: G06F3/06

CPC classification number: G06F3/0619 ,  G06F3/0608 ,  G06F3/0631 ,  G06F3/0643 ,  G06F3/0665 ,  G06F3/067 ,  G06F3/0683 ,  G06F12/02 ,  G06F12/023 ,  G06F12/08 ,  G06F17/30138

Abstract: A thinly provisioned storage system detects whether physical storage capacity is available when there is a request to allocate storage capacity, prior to data being written to the storage system. In particular, at the time when the file system allocates storage, such as when creating a file or performing an extending write (append) operation, allocating storage to an unallocated region of a sparse file, defragmenting a file, and the like, a storage system can verify that actual physical storage capacity is available. Thus, if there is insufficient actual physical capacity at the time when a storage allocation is attempted, then an error message can be sent and remedial action can be taken.

Abstract translation: 在数据被写入存储系统之前，当存在分配存储容量的请求时，精简配置的存储系统检测物理存储容量是否可用。 特别地，在文件系统分配存储时，例如在创建文件或执行扩展写（附加）操作时，将分配存储到稀疏文件的未分配区域，对文件进行碎片整理等等，存储器 系统可以验证实际物理存储容量是否可用。 因此，如果在尝试存储分配时实际物理容量不足，则可以发送错误消息并且可以采取补救措施。