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Conference Paper
Supporting Extended UNIX Remove Semantics in the OASIS Cluster Filesystem
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- Authors
- Sang Min Lee, Hong-Yeon Kim, Young-Kyun Kim, June Kim, Myoung-Joon Kim
- Issue Date
- 2007-08
- Citation
- International Conference on Computational Science and its Applications (ICCSA) 2007 (LNCS 4705), v.4705, pp.178-188
- Publisher
- Springer
- Language
- English
- Type
- Conference Paper
- Abstract
- Using the standard Object-based Storage Device, OASIS has been developed as a cluster filesystem. Like the most of existing out-of-band cluster filesystems using ODSs, the OASIS could not support the extended remove UNIX semantics to defer the remove of an inode until the uses of the inode in all client nodes are finished. This nonsupport generates the problems that it does not protect users to make use of the deleted inode and does share an inode of a deleted directory entry with a newly created entry, which is due to client node's VFS to support the remove UNIX semantics. To resolve these problems, this paper proposes the re-designed OASIS to perform an inode deletion until its uses are finished by extending the existing lock table for cache coherence. The suggested approach can support the remove UNIX semantics in the distributed environment and easily be adopted in the existing out-of-band cluster filesystems if using their locking mechanism. © Springer-Verlag Berlin Heidelberg 2007.
- KSP Keywords
- Cache coherence, Distributed Environment, Lock table, Locking mechanism, Storage device, object-based storage, out-of-band