---
name: "clurmtabd"
section: "8"
platform: "linux"
package: "rgmanager"
version: "2.20081102-1+lenny1"
release: "Debian 5.0 (Lenny)"
platforms: ["linux"]
url: "https://new.carta.tech/clurmtabd"
---

# clurmtabd(8)

Cluster NFS Remote Mount Table Daemon

## NAME

clurmtabd - Cluster NFS Remote Mount Table Daemon

## DESCRIPTION

Instances of  **clurmtabd** keep entries relevant to a given mount point in sync cluster-wide.  It does this by polling /var/lib/nfs/rmtab periodically.

## HOW IT WORKS

A single instance of  **clurmtabd** is spawned by the service manager (clusvcmgrd(8)) for each mount point in a given user service.  Each instance polls /var/lib/nfs/rmtab every few seconds, looking for changes.  When changes are detected, they are merged in with the current in-memory view.  The entries are filtered according to the mount point being monitored and are subsequently written out synchronously to that mount point.

When a user service is relocated (or after a fail-over), clurmtabd reads the entries on a given mount point and synchronizes them with the new member's /var/lib/nfs/rmtab.  This is done prior to running the [exportfs(8)](/exportfs/8.md) command so that clients of the given service do not receive "Stale NFS file handle" errors.

## NOTES

Clurmtabd is not a part of NFS and can not ensure that "Stale NFS file handle" errors are never received.  It is a best-effort attempt.  To fully prevent "Stale NFS file handle" errors, it is necessary to modify the Linux kernel as well as nfs-utils.

## FILES

/var/lib/nfs/rmtab

## SEE ALSO

[clurgmgrd(8)](/clurgmgrd/8.md), [rpc.mountd(8)](/rpc.mountd/8.md), [exportfs(8)](/exportfs/8.md)