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diff --git a/doc/features/gfid-access.md b/doc/features/gfid-access.md deleted file mode 100644 index 2d324a18bdb..00000000000 --- a/doc/features/gfid-access.md +++ /dev/null @@ -1,73 +0,0 @@ -#Gfid-access Translator -The 'gfid-access' translator provides access to data in glusterfs using a -virtual path. This particular translator is designed to provide direct access to -files in glusterfs using its gfid. 'GFID' is glusterfs's inode number for a file -to identify it uniquely. As of now, Geo-replication is the only consumer of this -translator. The changelog translator logs the 'gfid' with corresponding file -operation in journals which are consumed by Geo-Replication to replicate the -files using gfid-access translator very efficiently. - -###Implications and Usage -A new virtual directory called '.gfid' is exposed in the aux-gfid mount -point when gluster volume is mounted with 'aux-gfid-mount' option. -All the gfids of files are exposed in one level under the '.gfid' directory. -No matter at what level the file resides, it is accessed using its -gfid under this virutal directory as shown in example below. All access -protocols work seemlessly, as the complexities are handled internally. - -###Testing -1. Mount glusterfs client with '-o aux-gfid-mount' as follows. - - mount -t glusterfs -o aux-gfid-mount <node-ip>:<volname> <mountpoint> - - Example: - - #mount -t glusterfs -o aux-gfid-mount rhs1:master /master-aux-mnt - -2. Get the 'gfid' of a file using normal mount or aux-gfid-mount and do some - operations as follows. - - getfattr -n glusterfs.gfid.string <file> - - Example: - - #getfattr -n glusterfs.gfid.string /master-aux-mnt/file - # file: file - glusterfs.gfid.string="796d3170-0910-4853-9ff3-3ee6b1132080" - - #cat /master-aux-mnt/file - sample data - - #stat /master-aux-mnt/file - File: `file' - Size: 12 Blocks: 1 IO Block: 131072 regular file - Device: 13h/19d Inode: 11525625031905452160 Links: 1 - Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) - Access: 2014-05-23 20:43:33.239999863 +0530 - Modify: 2014-05-23 17:36:48.224999989 +0530 - Change: 2014-05-23 20:44:10.081999938 +0530 - - -3. Access files using virtual path as follows. - - /mountpoint/.gfid/<actual-canonical-gfid-of-the-file\>' - - Example: - - #cat /master-aux-mnt/.gfid/796d3170-0910-4853-9ff3-3ee6b1132080 - sample data - #stat /master-aux-mnt/.gfid/796d3170-0910-4853-9ff3-3ee6b1132080 - File: `.gfid/796d3170-0910-4853-9ff3-3ee6b1132080' - Size: 12 Blocks: 1 IO Block: 131072 regular file - Device: 13h/19d Inode: 11525625031905452160 Links: 1 - Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) - Access: 2014-05-23 20:43:33.239999863 +0530 - Modify: 2014-05-23 17:36:48.224999989 +0530 - Change: 2014-05-23 20:44:10.081999938 +0530 - - We can notice that 'cat' command on the 'file' using path and using virtual - path displays the same data. Similarly 'stat' command on the 'file' and using - virtual path with gfid gives same Inode Number confirming that its same file. - -###Nature of changes -This feature is introduced with 'gfid-access' translator. |