Storage system and method for connectivity checking
First Claim
1. A connectivity checking method for checking connectivity between a plurality of initiator computers and a plurality of target computers in a storage system, said storage system comprising a plurality of connecting ports for connecting to an Internet Protocol network, and said target computers providing prescribed storage volumes via any of said plurality of connecting ports to said initiator computers connected to said network, said connectivity checking method comprising:
- configuring at least one data communication path between said target computers and said initiator computers via said connecting ports, and for each said at least one data communication path, storing in a path configuration table a target name that identifies a target computer of the plurality of target computers, an initiator name that identifies an initiator computer of the plurality of initiator computers, and a port name that identifies a prescribed connecting port of the plurality of connecting ports;
transmitting an echo request based on an Internet Control Message Protocol from said target computer identified by said stored target name to said initiator computer identified by said stored initiator name via said prescribed connecting port identified by said stored port name of said at least one communication path;
determining said connectivity via said at least one data communication path having said prescribed connecting port based on a reachable status of an echo reply in said target computer, said echo reply being transmitted from said initiator computer in response to said transmitted echo request;
configuring a new data communication path between said initiator computer and said target computer via a connecting port other than said prescribed connecting port;
checking connectivity for said new data communication path; and
registering said new data communication path in said path configuration table if it is determined that said connectivity via said new data communication path is normal.
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Accused Products
Abstract
The invention is intended to provide a connectivity checking technology to make it easier to check the connectivity of data communication paths in an IP storage system. The target computer 20 of the storage system 10 transmits an ICMP echo request to an initiator computer 70 through a prescribed IP port 110 in the storage system 10, and determines whether or not the connectivity is normal between the target computer 20 and initiator computer 70 through the prescribed IP port 110 based on a reachable status of the ICMP echo reply from the initiator computer 70.
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Citations
24 Claims
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1. A connectivity checking method for checking connectivity between a plurality of initiator computers and a plurality of target computers in a storage system, said storage system comprising a plurality of connecting ports for connecting to an Internet Protocol network, and said target computers providing prescribed storage volumes via any of said plurality of connecting ports to said initiator computers connected to said network, said connectivity checking method comprising:
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configuring at least one data communication path between said target computers and said initiator computers via said connecting ports, and for each said at least one data communication path, storing in a path configuration table a target name that identifies a target computer of the plurality of target computers, an initiator name that identifies an initiator computer of the plurality of initiator computers, and a port name that identifies a prescribed connecting port of the plurality of connecting ports; transmitting an echo request based on an Internet Control Message Protocol from said target computer identified by said stored target name to said initiator computer identified by said stored initiator name via said prescribed connecting port identified by said stored port name of said at least one communication path; determining said connectivity via said at least one data communication path having said prescribed connecting port based on a reachable status of an echo reply in said target computer, said echo reply being transmitted from said initiator computer in response to said transmitted echo request; configuring a new data communication path between said initiator computer and said target computer via a connecting port other than said prescribed connecting port; checking connectivity for said new data communication path; and registering said new data communication path in said path configuration table if it is determined that said connectivity via said new data communication path is normal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A storage system comprising:
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a plurality of connecting ports for connecting to an Internet Protocol network; a plurality of target computers for providing a prescribed storage volume via any of said plurality of connecting ports to a plurality of initiator computers connected to said network, wherein at lest one data communication path between said target computers and said initiator computers is configured; a path configuration table that stores, for each said at least one data communication path, a target name that identifies a target computer of the plurality of target computers, an initiator name that identifies an initiator computer of the plurality of initiator computers, and a port name that identifies a prescribed connecting port of the plurality of connecting ports; an echo request unit that transmits an echo request based on an Internet Control Message Protocol from said target computer identified by said stored target name to said initiator computer identified by said stored initiator name via said prescribed connecting port of said at least one data communication path; and a connectivity checking unit that determines connectivity between said target computer and said initiator computer via said at least one data communication path including said prescribed connecting port based on a reachable status of an echo reply in said target computer, said echo reply being transmitted from said initiator computer in response to said transmitted echo request, wherein a new data communication path between said initiator computer and said target computer is configured via a connecting port other than said prescribed connecting port, and wherein when it is determined that connectivity via said new data communication path including said prescribed connecting port is normal, a configuration of said new data communication path is registered in said path configuration table. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification