Session management method for computer system
First Claim
1. An iSCSI session management method for a computer system including an initiator, and a storage system coupled to the initiator via a network,the initiator including a first interface coupled to the network, a first processor coupled to the first interface, and a first memory coupled to the first processor,the storage system including a second interface coupled to the network, a second memory coupled to the second interface, and a second processor coupled to the second memory,the iSCSI session management method comprising the steps of:
- executing, by the initiator, health check for diagnosing a status of an iSCSI session, whose session ID is a first session ID, established between the initiator and the storage system, by sending an iSCSI command for health check, when an iSCSI command queue of the iSCSI session is empty for a first predetermined period; and
executing, by the initiator, logout from the iSCSI session and then login to the iSCSI session so that the session ID of the iSCSI session is changed from the first session ID to a second session ID which is different from the first session ID, at a timing of executing the health check, when the iSCSI command queue of the iSCSI session is empty for a second predetermined period which is longer than the first predetermined period.
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Abstract
There is provided a session management method for a computer system including an initiator, and a storage system coupled to the initiator via a network. The initiator includes an interface coupled to the network, a processor and a memory. The storage system includes an interface coupled to the network, a memory and a processor. The session management method comprising the steps of: executing, by the initiator, health check for diagnosing a status of a session established between the initiator and the storage system in the case of which no data is input/output to/from the storage device for a first predetermined period; and cutting off and re-establishing, by the initiator, the session with the storage system at a timing of executing the health check in the case of which no data is input/output to/from the storage system for a second predetermined period.
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Citations
15 Claims
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1. An iSCSI session management method for a computer system including an initiator, and a storage system coupled to the initiator via a network,
the initiator including a first interface coupled to the network, a first processor coupled to the first interface, and a first memory coupled to the first processor, the storage system including a second interface coupled to the network, a second memory coupled to the second interface, and a second processor coupled to the second memory, the iSCSI session management method comprising the steps of: -
executing, by the initiator, health check for diagnosing a status of an iSCSI session, whose session ID is a first session ID, established between the initiator and the storage system, by sending an iSCSI command for health check, when an iSCSI command queue of the iSCSI session is empty for a first predetermined period; and executing, by the initiator, logout from the iSCSI session and then login to the iSCSI session so that the session ID of the iSCSI session is changed from the first session ID to a second session ID which is different from the first session ID, at a timing of executing the health check, when the iSCSI command queue of the iSCSI session is empty for a second predetermined period which is longer than the first predetermined period. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A storage system coupled to another storage system via a network, comprising:
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an interface coupled to the network; a memory coupled to the interface; and a processor coupled to the memory, wherein the processor is configured to; execute health check for diagnosing a status of an iSCSI session, whose session ID is a first session ID, established between the storage system and the another storage system, when an iSCSI command queue of the iSCSI session is empty for a first predetermined period; and execute logout from the iSCSI session and then login to the iSCSI session so that the session ID of the iSCSI session is changed from the first session ID to a second session ID which is different from the first session ID, at a timing of executing the health check, when the iSCSI command queue of the iSCSI session is empty for a second predetermined period which is longer than the first predetermined period. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A computer system comprising:
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an initiator; and a storage system coupled to the initiator via a network, wherein; the initiator includes a first interface coupled to the network, a first processor coupled to the first interface, and a first memory coupled to the first processor; the storage system includes a second interface coupled to the network, a second memory coupled to the second interface, and a second processor coupled to the second memory; and the initiator is configured to; execute health check for diagnosing a status of an iSCSI session, whose session ID is a first session ID, established between the initiator and the storage system, when an iSCSI command queue of the iSCSI session is empty for a first predetermined period; and executing, by the initiator, logout from the iSCSI session and then login to the iSCSI session so that the session ID of the iSCSI session is changed from the first session ID to a second session ID which is different from the first session ID, at a timing of executing the health check, when the iSCSI command queue of the iSCSI session is empty for a second predetermined period which is longer than the first predetermined period.
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Specification