METHOD AND APPARATUS FOR MASTER VOLUME ACCESS DURING COLUME COPY
First Claim
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1. A volume copy method, comprising:
- receiving a command to create a volume copy of a volume copy source;
creating a volume copy target;
copying data from a snapshot associated with the volume copy source to the volume copy target; and
allowing host access to at least one of the volume copy source and volume copy target while the copying data step is occurring.
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Abstract
A method and device for performing a volume copy is provided. The volume copy method allows access to both the Volume Copy Source and Volume Copy Target while the volume copy process is occurring. This allows a system administrator to initiate a volume copy without worrying that host access to the Volume Copy Source and Volume Copy Target will be interrupted.
134 Citations
20 Claims
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1. A volume copy method, comprising:
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receiving a command to create a volume copy of a volume copy source;
creating a volume copy target;
copying data from a snapshot associated with the volume copy source to the volume copy target; and
allowing host access to at least one of the volume copy source and volume copy target while the copying data step is occurring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for controlling a storage system, comprising:
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a snapshot application comprising a volume copy module operable to copy data from a snapshot associated with a volume copy source to a volume copy target; and
an Input/Output (I/O) application operable to execute read and write commands from at least one of the volume copy source and volume copy target while the volume copy module is copying data from the snapshot to the volume copy source. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A data storage system, comprising:
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at least one data storage device that includes;
a volume copy source;
a snapshot associated with the volume copy source; and
a volume copy target;
a controller operable to execute at least one of a read and write command with respect to at least one of the volume copy source and volume copy target while copying data from the snapshot to the volume copy target. - View Dependent Claims (19, 20)
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Specification