Release Information
- Gfarm File System
-
- Gfarm file system version 2.6.0
- Gfarm file system version 2.5.8.13
Gfarm 2.6.0 is a major version upgrade & includes the following new features.
- End-to-end data integrity
- Failover capability for Gfmd during operation
- Specifying file system node grouping & file replication placement
- Support for CentOS 7
Updating from Gfarm 2.5.8.X or earlier versions to Gfarm 2.6.0 requires running config-gfarm-update to update the PostgreSQL schema.
- % service gfarm-pgsql start
- % config-gfarm-update –update
- % service gfmd start
To enable end-to-end data integrity checks, specify the digest in gfmd.conf to enable checksum calculation, & configure the following in gfarm2.conf.
- client_digest_check enable
This enables detection of silent data destruction. Specify replication placement by grouping file system nodes with 'gfhostgroup' & using 'gfncopy -S'. For details, refer to the manual page.
Update History
Release note for Gfarm 2.6.0 [2014.12.17]
- New feature
-
- end-to-end data integrity for silent data corruption [sf.net ticket #774]
- checksum during replication [sf.net tickets #769 & #771]
- replica locations specified by file system node groups [sf.net tickets #494 & #711]
- gfhostgroup – manage file system node group
- fast failover by notifying to gfsd [sf.net ticket #721]
- client transparent failover [sf.net ticket #527]
- support sticky bit of directories [sf.net ticket #762]
- New configuration directive
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- client_digest_check – enables end-to-end data integrity
- New API
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- gfs_pio_sendfile, gfs_pio_recvfile – bulk data transfer
- Updated feature
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- gfncopy – -S option to specify replica locations by node groups [sf.net ticket #712]
- gfpcopy, gfexport, gfreg – performance improvement [sf.net ticket #728]
- support sha256 digest type [sf.net ticket #757]
- gfmdhost – introduce a new state under synchronization [sf.net ticket #752]
- Bug fix
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- fix race condition when updating files during a failover [sf.net ticket #341]
- file metadata may not be updated when using direct access feature on a file system node [sf.net ticket #461]
Release note for Gfarm 2.5.8.13 [2014.12.16]
- Updated feature
-
- config-gfarm – CentOS 7 support [sf.net ticket #787]
- gfprep – suppress insufficient number of replicas error since it is norm when -x option is specified
- gfmdhost – -N & -1 options for health check purpose [sf.net ticket #779]
- Bug fix
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- GFARM_FILE_APPEND does not work on Mac OS X [sf.net ticket #789]
