N. Hutchinson, S. Manley, M. Federwisch, G. Harris, D. Hitz, S. Kleiman, and S. O'Malley. Logical vs. physical file system backup. In Proceedings of the Third USENIX Symposium on Operating System Design and Implementation, February 1999.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....into their own internal format. An alternative approach is block level or physical backup, in which the disk blocks that make up the file system are directly copied without interpretation. Physical backup has a number of benefits including simplicity and potentially much higher throughput [8]. A physical backup utility for file systems that stores the resulting data on Venti appears attractive, though we have not yet implemented such an application. The simplest form of physical backup is to copy the raw contents of one or mores disk drives to Venti. The backup also includes a tree ....

Norman C. Hutchinson, Stephen Manley, Mike Federwisch, Guy Harris, Dave Hitz, Steven Kleiman, and Sean O'Malley. Logical vs. physical file system backup. In Proceedings of the 3 USENIX Symposium on Operating Systems Design and Implementation (OSDI), 1999.

....front side bus. All machines are equipped with 9 GB Ultra2 Cheetah SCSI hard disk drives which can read and write a data stream with more than 20 MB s 1 . Partition cloning is similar to general backup and restore operations. The differences between logical and physical backup are examined in [6]. We wanted our tool to remain operating system and filesystem independent and therefore we work with raw disk partitions ignoring their filesystems and their content. Another previous study of software distribution [7] presents a protocol and a tool to distribute data to a large number of ....

Hutchinson NC, Manley S, Federwisch M, Harris G, Hitz D, Kleiman S, Malley SO. Logical vs. physical file system backup. Proceedings of the 3rd Symposium on Operating Systems Design and Implementation, New Orleans, Louisiana, February 1999. The USENIX Association, 1999; 239--249.

....will be tested in future work. 7 Related work Considerable work has been done in the area of increasing the reliability of traditional filesystems. Some of this work has focused on data backup. A survey of current backup techniques is presented by Chervenak et al. in [3] and Hutchinson et al. [16] discuss the nature of the backup snapshot. Traditional strategies often require human intervention to mount magnetic tape, run the backup, and store backup tapes in a coherent way. Recently, systems designed to better automate this process have been introduced by IBM [5, 17] and UniTree ....

Norman C. Huchinson, Stephen Manley, Mike Federwisch, Guy Harris, Dave Hitz, Steven Kleiman, and Sean O'Malley. Logical vs. physical file system backup. In Proceedings of the Third USENIX Symposium on Operating Systems Design and Implementation (OSDI), 1999. 21

....is the large amount of data required to store the different OS installations and incremental versions, especially once multiple operating systems are used on the same set of machines in a cluster. This problem is addressed in our paper. A previous study in this area by Hutchinson et al. [2] compares the speed of physical vs. logical backups of secondary storage devices to tertiary storage. The authors use a different terminology and misleadingly denote logical backups (i.e. filewise backups) as operating system independent, because the files could be restored on any operating ....

....configurations and software installations automatically after the initial OS is installed. Scripted installs have some disadvantages however: 1) They are OS dependent as the OS must support scripting languages and be configurable by scripts. 2) They are slow since the file system must be used. [2] describes how the direct physical access of the disk is much faster than using the logical file system, while [5] shows that fast network based installations on clusters are in fact possible with raw disk accesses) 3) The removal of software packages with a script is not as clean as restoring ....

Norman C. Hutchinson, Stephen Manley, Mike Federwisch, Guy Harris, Dave Hitz, Steven Kleiman, and Sean O Malley. Logical vs. Physical File System Backup. In Proceedings of the 3rd Symposium on Operating Systems Design and Implementation, New Orleans, Louisiana, pages 239--249. The USENIX Association, February 1999.

....MHz front side bus. All machines are equipped with 9 GB Ultra2 Cheetah SCSI harddisk drives which can read and write a data stream with more than 20 MByte s. Partition cloning is similar to general backup and restore operations. The differences between logical and physical backup are examined in [8]. We wanted our tool to remain operating system and file system independent and therefore we work with raw disk partitions ignoring their filesystems and their content. Another previous study of software distribution [9] presents a protocol and a tool to distribute data to a large number of ....

Norman C. Hutchinson, Stephen Manley, Mike Federwisch, Guy Harris, Dave Hitz, Steven Kleiman, and Sean O Malley. Logical vs. Physical File System Backup. In Proceedings of the 3rd Symposium on Operating Systems Design and Implementation, New Orleans, Louisiana, pages 239--249. The USENIX Association, February 1999.

....have investigated implementation issues, although they have focused on different archive architectures than the SAV design we discuss here. The archiving problem is related to the problem of increasing the reliability of file systems. A few investigators have looked at ways to perform file backup [3, 12]. Another approach is to redesign the file system itself to incorporate more reliability features. One idea is to use Redundant Arrays of Inexpensive Disks (RAID) 15] so that disk failures can be overcome. Others have suggested using logs to improve many aspects of the file system, including the ....

Norman C. Hutchinson, Stephen Manley, Mike Federwisch, Guy Harris, Dave Hitz, Steven Kleiman, and Sean O'Malley. Logical vs. physical file system backup. In Proceedings of the Third USENIX Symposium on Operating Systems Design and Implementation (OSDI), 1999.

....have investigated implementation issues, although they have focused on different archive architectures than the SAV design we discuss here. The archiving problem is related to the problem of increasing the reliability of file systems. A few investigators have looked at ways to perform file backup [3, 13]. Another approach is to redesign the file system itself to incorporate more reliability features. One idea is to use Redundant Arrays of Inexpensive Disks (RAID) 16] so that disk failures can be overcome. Others have suggested using logs to improve many aspects of the file system, including the ....

Norman C. Hutchinson, Stephen Manley, Mike Federwisch, Guy Harris, Dave Hitz, Steven Kleiman, and Sean O'Malley. Logical vs. physical file system backup. In Proceedings of the Third USENIX Symposium on Operating Systems Design and Implementation (OSDI), 1999.

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N. Hutchinson, S. Manley, M. Federwisch, G. Harris, D. Hitz, S. Kleiman, and S. O'Malley. Logical vs. physical file system backup. In Proceedings of the Third USENIX Symposium on Operating System Design and Implementation, February 1999.

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N. Hutchinson, S. Manley, M. Federwisch, G. Harris, D. Hitz, S. Kleiman, and S. O'Malley. Logical vs. physical file system backup. In Proceedings of the Third USENIX Symposium on Operating System Design and Implementation, February 1999.

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N. C. Hutchinson, S. Manley, M. Federwisch, G. Harris, D. Hitz, S. Kleiman, and S. O'Malley. Logical vs. physical file system backup. In 3rd Symposium on Operating System Design and Implementation Proceedings (OSDI), February 1999. 54

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N.C. Hutchinson, S. Manley, M. Feder- wisch, G. Harris, D. Hitz, S. Kleiman, S. O'Malley. Logical vs. Physical File System Backup. Proceedings Third Symposium on Operating System Design and Implementation. February 1999.

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N. C. Hutchinson, S. Manley, M. Federwisch, G. Harris, D. Hitz, S. Kleiman, and S. O'Malley. Logical vs. physical file system backup. In 3rd Symposium on Operating System Design and Implementation Proceedings (OSDI), pages 239--250, February 1999.

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N. C. Hutchinson, S. Manley, M. Federwisch, G. Harris, D. Hitz, S. Kleiman, and S. O'Malley. Logical vs. Physical File System Backup. In Proc. of the 3rd USENIX Symposium on Operating Systems Design and Impl. (OSDI99), Feb. 1999.

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