Restarting method using a snapshot
First Claim
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1. A server restarting method for a computing system comprising:
- a plurality of active servers connected to a disk device comprising a plurality of storage areas;
at least one backup server connected to said disk device; and
an administration server to which each of said active servers and said backup server are connected, said administration server storing a snapshot containing memory content of said each active server in said storage areas,the method comprising said administration server performing steps of;
receiving an alert from a first active server;
determining whether said alert corresponds to a predetermined condition;
issuing an instruction to said first active server to obtain an additional snapshot in addition to a previous snapshot obtained by said first active server when it is determined that said alert corresponds to said predetermined condition;
storing said additional snapshot in a storage area different from a storage area that stores said previous snapshot; and
storing information in a disk management storage area that relates together said additional snapshot, said storage area that stores said additional snapshot, and said predetermined condition,wherein when a failure occurs in one of said active servers, designated a failed active server, then;
extracting a plurality of storage areas in which a snapshot corresponding to said failed active server is stored based on said information in said disk management storage area;
selecting a storage area corresponding to said predetermined condition from among said extracted storage areas using said information in said disk management storage area; and
starting up said backup server.
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Abstract
The active server A101 notifies its own operating status to the administration server 106, and the administration server 106 acquires a snapshot and copies a disk according to the policy established by a user. When the active server A101 or the active disk 113 fails, the administration server 106 chooses a backup server A104 and a status storage disk A114 to be booted and restarts them by using the snapshot according to the policy.
48 Citations
18 Claims
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1. A server restarting method for a computing system comprising:
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a plurality of active servers connected to a disk device comprising a plurality of storage areas; at least one backup server connected to said disk device; and an administration server to which each of said active servers and said backup server are connected, said administration server storing a snapshot containing memory content of said each active server in said storage areas, the method comprising said administration server performing steps of; receiving an alert from a first active server; determining whether said alert corresponds to a predetermined condition; issuing an instruction to said first active server to obtain an additional snapshot in addition to a previous snapshot obtained by said first active server when it is determined that said alert corresponds to said predetermined condition; storing said additional snapshot in a storage area different from a storage area that stores said previous snapshot; and storing information in a disk management storage area that relates together said additional snapshot, said storage area that stores said additional snapshot, and said predetermined condition, wherein when a failure occurs in one of said active servers, designated a failed active server, then; extracting a plurality of storage areas in which a snapshot corresponding to said failed active server is stored based on said information in said disk management storage area; selecting a storage area corresponding to said predetermined condition from among said extracted storage areas using said information in said disk management storage area; and starting up said backup server. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A computing system comprising:
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a plurality of active servers connected to a disk device comprising a plurality of storage areas; at least one backup server connected to the disk device; and an administration server to which each of said active servers and said backup server are connected, said administration server storing a snapshot containing memory content of said each active server in said storage areas, each active server configured to store a snapshot containing memory content of said each active server in said storage areas, said administration server configured to; receive an alert from a first active server; determine whether said alert corresponds to a predetermined condition; issue an instruction to said first active server to obtain an additional snapshot in addition to a previous snapshot obtained by said first active server when it is determined that said alert corresponds to said predetermined condition; store said additional snapshot in a storage area different from a storage area that stores said previous snapshot; and store information in a disk management storage area that relates together said additional snapshot, said storage area that stores said additional snapshot, and said predetermined condition, wherein when a failure occurs in one of said active servers, designated a failed active server, then; extract a plurality of storage areas in which a snapshot corresponding to said failed active server is stored based on said information in said disk management storage area; select a storage area corresponding to said predetermined condition from among said extracted storage areas using said information in said disk management storage area; and start up said backup server. - View Dependent Claims (15, 16, 17, 18)
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Specification