PowerScale: How to force all NFS clients to access NFS exports using aliases, instead of full paths

Riepilogo: PowerScale (Isilon) clusters offer a configuration change to show and allow access to only NFS aliases instead of the full path in /ifs.

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Istruzioni

PowerScale (Isilon) clusters offer the ability to share an NFS export using an alias. This allows a client to mount using the alias instead of using the full /ifs path.
In the default configuration, a cluster can be mounted using either a configured alias or the NFS export's path.
This article shows a configuration change that enables access using only the alias.

This configuration change requires an NFS service restart, which could be a disruptive change for some NFS clients. This configuration change also applies to all access zones.

Implementation

  1. Run this command to change the configuration:
    isi_gconfig registry.Services.lwio.Parameters.Drivers.nfs.MountdMustUseAlias=1
  2. Restart the NFS service with:
    /usr/likewise/bin/lwsm restart onefs_nfs


More information

For comparison, here is how the output of showmount -e looks before and after the change.

Before, showing an alias (/netgroup and multiple exports): 
$ showmount -e 192.168.1.31
Export list for 192.168.1.31:
/netgroup           (everybody)
/ifs/data/netgroup  (everybody)
/ifs/data           (everybody)

After, showing only the alias: 
$ showmount -e 192.168.1.31
Export list for 192.168.1.31:
/netgroup  (everybody)

Accessing the NFS export that does not have a configured alias results in a permission denied error for a client. 
$ mount -t nfs -o "vers=3" 192.168.1.31:/ifs/data
/mnt/test mount.nfs: access denied by server while mounting 192.168.1.31:/ifs/data

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Proprietà dell'articolo
Numero articolo: 000214653
Tipo di articolo: How To
Ultima modifica: 09 ott 2023
Versione:  2
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