CA2242833A1 - Parallel file system and method using tokens and metadata nodes - Google Patents
Parallel file system and method using tokens and metadata nodesInfo
- Publication number
- CA2242833A1 CA2242833A1 CA002242833A CA2242833A CA2242833A1 CA 2242833 A1 CA2242833 A1 CA 2242833A1 CA 002242833 A CA002242833 A CA 002242833A CA 2242833 A CA2242833 A CA 2242833A CA 2242833 A1 CA2242833 A1 CA 2242833A1
- Authority
- CA
- Canada
- Prior art keywords
- file
- file system
- parallel
- metadata
- tokens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract 3
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
Abstract
A computer system having a shared disk file system running on multiple computers each having their own instance of an operating system and being coupled for parallel data sharing access to files residing on network attached shared disks. Methods are provided for use as a parallel file system in a shared disk environment by use of a scalable directory service for the system with a stable cursor, a segmented allocation map. Dynamic prefetch and cached balance pools for multiple accesses improve the system. Extended file attributes and attribute value sharing are used for implementation of access control lists in a parallel file system. A metadata node manages file metadata for parallel read and write actions. For our system, tokens are used for metadata node selection and identification. Enhanced token modes for controlling file size, as well as smart caching of byte range tokens using file access patterns and a byte range lock algorithm using a byte range token interface are provided. Locking techniques reduce the overhead of a token manager which is also used in the file system recovery if a computer participating in the management of shared disks becomes unavailable or failed. Synchronous and asynchronous takeover of a metadata node occurs for correction of metadata which was under modification. Locks are not constantly required to allocate new blocks on behalf of a user. Recoverable local shares for quota management are provided. A
quota server and a quota client are provided for each file system, and a quotacheck utility allows parallel environments with minimal interference to other applications which require the use of quotas.
quota server and a quota client are provided for each file system, and a quotacheck utility allows parallel environments with minimal interference to other applications which require the use of quotas.
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/893,627 | 1997-07-11 | ||
US08/893,723 US5974424A (en) | 1997-07-11 | 1997-07-11 | Parallel file system and method with a metadata node |
US08/893,725 | 1997-07-11 | ||
US08/893,627 US6021508A (en) | 1997-07-11 | 1997-07-11 | Parallel file system and method for independent metadata loggin |
US08/893,723 | 1997-07-11 | ||
US08/893,725 US5950199A (en) | 1997-07-11 | 1997-07-11 | Parallel file system and method for granting byte range tokens |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2242833A1 true CA2242833A1 (en) | 1999-01-11 |
CA2242833C CA2242833C (en) | 2004-09-07 |
Family
ID=27420549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002242833A Expired - Fee Related CA2242833C (en) | 1997-07-11 | 1998-07-09 | Parallel file system and method using tokens and metadata nodes |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2242833C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111930686A (en) * | 2020-07-15 | 2020-11-13 | 杭州海康威视系统技术有限公司 | Method and device for storing log and computer equipment |
US11288396B2 (en) | 2019-06-18 | 2022-03-29 | International Business Machines Corporation | Data security through physical separation of data |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9798695B2 (en) * | 2012-08-07 | 2017-10-24 | Nokia Technologies Oy | Access control for wireless memory |
-
1998
- 1998-07-09 CA CA002242833A patent/CA2242833C/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11288396B2 (en) | 2019-06-18 | 2022-03-29 | International Business Machines Corporation | Data security through physical separation of data |
CN111930686A (en) * | 2020-07-15 | 2020-11-13 | 杭州海康威视系统技术有限公司 | Method and device for storing log and computer equipment |
CN111930686B (en) * | 2020-07-15 | 2024-02-20 | 杭州海康威视系统技术有限公司 | Method and device for storing logs and computer equipment |
Also Published As
Publication number | Publication date |
---|---|
CA2242833C (en) | 2004-09-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed | ||
MKLA | Lapsed |
Effective date: 20100709 |