公开(公告)号：WO2007126513A3

公开(公告)日：2007-11-08

申请号：PCT/US2007/005048

申请日：2007-02-26

Applicant: NETWORK APPLIANCE, INC.

Inventor： GOLE, Abhijeet ,  SARMA, Joydeep, Sen

IPC: G06F12/00

Abstract: A filer converts a traditional volume to a flexible volume by: creating an aggregate on storage devices other than the storage devices of the traditional volume; on the aggregate, creating a flexible volume large enough to store metadata describing files residing on the traditional volume; on the flexible volume, creating metadata structures that describe the files of the traditional volume, except that the metadata indicates that data blocks and indirect blocks are absent and must be fetched from another location. As the filer handles I/O requests directed to the flexible volume, the filer calculates physical volume block number (PVBN) addresses where the requested blocks would be located in the aggregate and replaces the absent pointers with the calculated addresses. After the absent pointers have been replaced, the filer adds the storage devices of the traditional volume.

公开(公告)号：WO2007078645A2

公开(公告)日：2007-07-12

申请号：PCT/US2006/047131

申请日：2006-12-08

Applicant: NETWORK APPLIANCE, INC. ,  SARMA, Joydeep, Sen ,  GOLE, Abhijeet, P.

Inventor： SARMA, Joydeep, Sen ,  GOLE, Abhijeet, P.

CPC classification number: G06F17/30067 ,  Y10S707/99952

Abstract: Data storage methods and apparatus combining read-only and read-write storage are described. Data may be located by information maintained in a filesystem; each data block is stored in either the read-only storage or the read-write storage.

Abstract translation: 描述了将只读存储和读写存储组合在一起的数据存储方法和装置。 数据可以通过在文件系统中维护的信息来定位; 每个数据块都存储在只读存储器或读写存储器中。

公开(公告)号：EP2013735A2

公开(公告)日：2009-01-14

申请号：EP07751782.9

申请日：2007-02-26

Applicant: Network Appliance, Inc.

Inventor： GOLE, Abhijeet ,  SARMA, Joydeep, Sen

IPC: G06F12/00

CPC classification number: G06F3/0665 ,  G06F3/0605 ,  G06F3/0608 ,  G06F3/0644 ,  G06F3/0683

Abstract: A filer converts a traditional volume to a flexible volume by: creating an aggregate on storage devices other than the storage devices of the traditional volume; on the aggregate, creating a flexible volume large enough to store metadata describing files residing on the traditional volume; on the flexible volume, creating metadata structures that describe the files of the traditional volume, except that the metadata indicates that data blocks and indirect blocks are absent and must be fetched from another location. As the filer handles I/O requests directed to the flexible volume, the filer calculates physical volume block number (PVBN) addresses where the requested blocks would be located in the aggregate and replaces the absent pointers with the calculated addresses. After the absent pointers have been replaced, the filer adds the storage devices of the traditional volume.