2026-09-19T00:37:16Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/775382022-01-13T07:54:29Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Farshid Eslami-Sarab and M. Frans Kaashock.
Zehender, Nicholas (Nicholas G.)
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2013-03-01T15:27:31Z
2013-03-01T15:27:31Z
2011
2011
http://hdl.handle.net/1721.1/77538
826644630
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 63-64).
This thesis reports on the design and implementation of Network Assisted NFSCK (or NAN), an extension to NFSCK, a research project about checking file system consistency at NetApp. NFSCK requires disk space to store temporary files, but sometimes insufficient disk space is available, and NFSCK cannot be used. NAN allows NFSCK to use an NFS server to store these temporary files. Tests were run to compare the total running time of NAN and NFSCK on various machines and data sets. Results showed that CPU was the limiting factor for NAN's performance. On machines with four CPUs, the running time of NAN was within 1% of the running time of NFSCK. On machines with two CPUs, running time was up to 6% worse with a large file data set, and up to 22% worse with a small file data set.
by Nicholas Zehender.
M.Eng.
64 p.
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Electrical Engineering and Computer Science.
Network assisted file system consistency checking
Network-assisted consistency checking for WAFL
Network-assisted consistency checking for Write Anywhere File Layout
Thesis
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<Abstract>This thesis reports on the design and implementation of Network Assisted NFSCK (or NAN), an extension to NFSCK, a research project about checking file system consistency at NetApp. NFSCK requires disk space to store temporary files, but sometimes insufficient disk space is available, and NFSCK cannot be used. NAN allows NFSCK to use an NFS server to store these temporary files. Tests were run to compare the total running time of NAN and NFSCK on various machines and data sets. Results showed that CPU was the limiting factor for NAN's performance. On machines with four CPUs, the running time of NAN was within 1% of the running time of NFSCK. On machines with two CPUs, running time was up to 6% worse with a large file data set, and up to 22% worse with a small file data set.</Abstract>
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