Apparatus for supporting creation of access path from host to logical volume
AssigneeHitachi, Ltd.
InventorNaoto Kawasaki
Life of this patent
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Abstract
A path creation support apparatus acquires either a portion of the parameters required for path creation or parameter decision information for deciding this portion of the parameters from a storage system or a host. The path creation support apparatus decides the portion of the parameters based on the parameter decision information. Upon receiving an access path creation start request, the path creation support apparatus sends an access path creation indication to the host and the storage system which specifies the parameters together with the access path creation start request, and either the parameters acquired beforehand or the acquired parameters decided based on the parameter decision information.
Claims12
A path creation support apparatus for supporting the creation of an access path from a host to a logical volume in a storage system, a plurality of the access paths being grouped together on the basis of the type of operating system (OS) of the host that utilizes the access path, the path creation support apparatus comprising:
- a group information acquisition unit for acquiring group information from the storage system, the group information showing the group to which the access path utilized by the host belongs;
- a group information storage unit for storing the acquired group information and the type of OS of the host, which is associated with the acquired group information;
- a path creation indication unit configured to:
- receive an access path creation start request;
- acquire group information from the group information storage unit, the group information associated with the type of OS of the host which is to carry out the access path creation;
- and
- send an access path creation indication to the host and the storage system, the access path creation indication specifying a parameter together with the access path creation start request and the acquired group information;
- a logical volume information acquisition unit for acquiring logical volume information from the storage system, the logical volume information showing respective logical volumes that can be provided to the host by the storage system and the residual capacities of the respective logical volumes;
- a logical volume information storage unit for storing the acquired logical volume information and the residual capacities of the logical volumes associated with the acquired logical volume information;
- and
- a host storage domain (HSD) device configured to acquire and save HSD information and application program operational information used in an access path change process.
A path creation support method for supporting the creation of an access path from a host to a logical volume in a storage system, a plurality of the access paths being grouped together on the basis of the type of operating system (OS) of the host that utilizes the access path, the path creation support method comprising the steps of:
- acquiring group information from the storage system, the group information showing the group to which the access path utilized by the host belongs;
- storing the acquired group information and the type of OS of the host, which is associated with the acquired group information;
- upon receipt of an access path creation start request:
- acquiring group information associated with the type of OS of the host which is to carry out the access path creation;
- and
- sending an access path creation indication to the host and the storage system, the access path creation indication specifying a parameter together with the access path creation start request and the acquired group information;
- acquiring logical volume information from the storage system, the logical volume information showing respective logical volumes that can be provided to the host by the storage system and the residual capacities of the respective logical volumes;
- storing the acquired logical volume information and the residual capacities of the logical volumes associated with the acquired logical volume information;
- acquiring host storage domain (HSD) information and application program operational information;
- and
- storing the acquired HSD information and application program operational information.
Dependencies are inferred from the claim text.