A multi-tasking hierarchical file system for VM/CMS using virtual machine communication

dc.contributor.committeeMemberRusinkiewicz, Marek
dc.contributor.committeeMemberCzejdo, Bogdan
dc.contributor.committeeMemberBao, David
dc.creatorDate, Shashank Prabhakar
dc.description.abstractA UNIX-like multiuser file system is designed for VM/CMS. A tree structured hierarchical file system, with protection of each file, multi-tasking and concurrency control is implemented. The multiuser file system consists of at least two virtual machines. One, called the file server, owns all the files, handles all the commands, controls the concurrency and supports multi-tasking. The other virtual machines support the user interface in the form of CMS commands. The system allows many users to send commands simultaneously to the file server. Communication between the file server and the user utilizes the Virtual Machine Communication Facility (VMCF) software, provided in the VM Control Program (CP). The multiuser file system multi-threads the commands, so that the processing of the next command can start before the previous command gets completed. Two modes of file server operation are available. One mode, quiesce mode, notifies the user if the file server is being used by another process. The other mode, queuing mode, places the commands in the queue and services them in a multi-tasking fashion.
dc.description.departmentComputer Science, Department of
dc.format.digitalOriginreformatted digital
dc.rightsThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.
dc.subjectVirtual computer systems
dc.titleA multi-tasking hierarchical file system for VM/CMS using virtual machine communication
thesis.degree.collegeCollege of Natural Sciences and Mathematics
thesis.degree.departmentComputer Science, Department of
thesis.degree.disciplineComputer Science
thesis.degree.grantorUniversity of Houston
thesis.degree.nameMaster of Science


Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
1.85 MB
Adobe Portable Document Format