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| Content Provider | ACM Digital Library |
|---|---|
| Author | Kish, Bill Mohindra, Ajay Devarakonda, Murthy |
| Copyright Year | 1996 |
| Abstract | This article presents the deign and implementation of the recovery scheme in Calypso. Calypso is a cluster-optimized, distributed file system for UNIX clusters. As in Sprite and AFS, Calypso servers are stateful and scale well to a large number of clients. The recovery scheme in Calypso is nondisruptive, meaning that open files remain open, client modified data are saved, and in-flight operations are properly handled across server recover. The scheme uses distributed state amount the clients to reconstruct the server state on a backup node if disks are multiported or on the rebooted server node. It guarantees data consistency during recovery and provides congestion control. Measurements show that the state reconstruction can be quite fast: for example, in a 32-node cluster, when an average node contains state for about 420 files, the reconstruction time is about 3.3 seconds. However, the time to update a file system after a failure can be a major factor in the overall recovery time, even when using journaling techniques. |
| Starting Page | 287 |
| Ending Page | 310 |
| Page Count | 24 |
| File Format | |
| ISSN | 07342071 |
| e-ISSN | 15577333 |
| DOI | 10.1145/233557.233560 |
| Volume Number | 14 |
| Issue Number | 3 |
| Journal | ACM Transactions on Computer Systems (TOCS) |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1996-08-01 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Calypso Cluster systems Distributed state State reconstruction |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Science |
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