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System and method for transfering volume ownership in net-worked storage

  • US 7,296,068 B1
  • Filed: 12/21/2001
  • Issued: 11/13/2007
  • Est. Priority Date: 12/21/2001
  • Status: Active Grant
First Claim
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1. A method of transferring ownership of a volume having a plurality of disks from a source server to a destination server, the method comprising the steps of:

  • changing a first attribute of ownership from source server ownership to an un-owned state by writing the change to a log data structure and rewriting the first attribute of ownership on the disk, where the first attribute is a predetermined ownership sector on each disk;

    changing a second attribute of ownership from source ownership to an un-owned state by writing the change to a second log data structure and rewriting the second attribute of ownership on the disk, where the second attribute is small computer systems interface (SCSI) reservation;

    changing the first attribute of ownership from the un-owned state of ownership to destination server ownership by writing the change to a third log data structure and rewriting the first attribute of ownership on the disk; and

    changing the second attribute of ownership from the un-owned state to destination server ownership by writing the change to a fourth log data structure and rewriting the second attribute of ownership on the disk.

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