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Dieter Mosbach posted Thu January 30, 2025 09:24 AM

Is it right that even in AIX 7.3 it is not possible to make v4 as default for mounting NFS-filesystems?

Mounting a nfs-v4 filesystem only works when the NFS version v4 is specified explicitly:

root@serverlpar:/root# exportfs | grep v4

/nfs_v4 -vers=4,sec=sys,rw,root=clientlpar,access=clientlpar

root@clientlpar:/root# mkdir -p /nfs_v4; mount serverlpar:/nfs_v4 /nfs_v4

mount: 1831-011 access denied for serverlpar:/nfs_v4

mount: 1831-008 giving up on:

serverlpar:/nfs_v4

The file access permissions do not allow the specified action.

root@clientlpar:/root# mkdir -p /nfs_v4; mount -o vers=4 serverlpar:/nfs_v4 /nfs_v4

root@clientlpar:/root#

How can we make v4 as default?

Dieter Mosbach posted Thu January 30, 2025 09:27 AM

When we export it for 3 *and* 4, mount is falling back to 3.

Why isn't it using the highest version? (like Linux, e.g. SLES 15)

root@serverlpar:/root# exportfs | grep v34

/nfs_v34 -vers=3:4,sec=sys,rw,root=clientlpar,access=clientlpar

root@clientlpar:/root# mkdir -p /nfs_v34; mount serverlpar:/nfs_v34 /nfs_v34

root@clientlpar:/root# mount | grep v34

serverlpar /nfs_v34 /nfs_v34 nfs3 Jan 30 12:23

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