Contract SFS-DEV-001 early draft: Difference between revisions
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SFS-DEV-001 includes three areas for development. These areas are listed below with highlighted results. | SFS-DEV-001 includes three areas for development. These areas are listed below with highlighted results. | ||
<big>'''[http://wiki.opensfs.org/SFS-DEV-001_status Status Matrix]'''</big> | |||
== Lustre FSCK: OI Scrub == | == Lustre FSCK: OI Scrub == | ||
Revision as of 12:07, 13 February 2013
SFS-DEV-001 includes three areas for development. These areas are listed below with highlighted results.
Lustre FSCK: OI Scrub
Key Message
- Enable file-level backup and restoration of an MDT.
- Core infrastructure for online consistency checking.
Details of the internal of this work is available at on the Whamcloud community wiki.
Recent results
OI Scrub project provides ground work for a complete Lustre FSCK tool. Crucial to success of this tool is performance. OI Scrub has been demonstrated checking over 100K files/second on a typical MDS hardware node. In addition, OI Scrub provides a on-line mode that has been shown to add negligible system load with limited scan rates:
Single Server Metadata Performance: Parallel Directory Operations
Key Message
- Only a single lock is available for a directory on Lustre.
- Clients wanting access to a file in the same directory must do so in serial.
- This is fixed in
=== Recent Results
Whamcloud site for more information.