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| author | neilbrown <neilbrown> | 2004-02-24 03:32:30 +0000 |
|---|---|---|
| committer | neilbrown <neilbrown> | 2004-02-24 03:32:30 +0000 |
| commit | 7b8b7f8f47892f38432fda434ea8d84fa87a9360 (patch) | |
| tree | 693a6f9402a6e2b870d5eed292557b549a3eafaf /utils/exportfs | |
| parent | b7f4ad19f9b3b8e0f93da719a86d0e865be5ab75 (diff) | |
| download | nfs-utils-7b8b7f8f47892f38432fda434ea8d84fa87a9360.tar.gz nfs-utils-7b8b7f8f47892f38432fda434ea8d84fa87a9360.tar.xz nfs-utils-7b8b7f8f47892f38432fda434ea8d84fa87a9360.zip | |
Document fsid=
Diffstat (limited to 'utils/exportfs')
| -rw-r--r-- | utils/exportfs/exports.man | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/utils/exportfs/exports.man b/utils/exportfs/exports.man index 6223944..034a896 100644 --- a/utils/exportfs/exports.man +++ b/utils/exportfs/exports.man @@ -256,6 +256,28 @@ If a path is given (e.g. then the nominted path must be a mountpoint for the exportpoint to be exported. +.TP +.IR fsid= num +This option forces the filesystem identification portion of the file +handle and file attributes used on the wire to be +.I num +instead of a number derived from the major and minor number of the +block device on which the filesystem is mounted. Any 32 bit number +can be used, but it must be unique amongst all the exported filesystems. + +This can be useful for NFS failover, to ensure that both servers of +the failover pair use the same NFS file handles for the shared filesystem +thus avoiding stale file handles after failover. + +Some Linux filesystems are not mounted on a block device; exporting +these via NFS requires the use of the +.I fsid +option (although that may still not be enough). + +The value 0 has a special meaning when use with NFSv4. NFSv4 has a +concept of a root of the overall exported filesystem. The export point +exported with fsid=0 will be used as this root. + .SS User ID Mapping .PP .I nfsd |