Oracle Linux: mount(8) Command Hangs While Mounting NFS Mount (Doc ID 2674626.1)

Last updated on MARCH 24, 2023

Applies to:

Symptoms

NFS mount failing, we can see mount(8) command is stuck:

#  mount -vvv -t nfs NFS_SERVER :/MOUNT /mnt/MOUNT
mount: fstab path: "/etc/fstab"
mount: mtab path:  "/etc/mtab"
mount: lock path:  "/etc/mtab~"
mount: temp path:  "/etc/mtab.tmp"
mount: UID:        0
mount: eUID:       0
mount: spec:  "NFS_SERVER :/MOUNT"
mount: node:  "/mnt/MOUNT"
mount: types: "nfs"
mount: opts:  "(null)"
final mount options: '(null)'
mount: external mount: argv[0] = "/sbin/mount.nfs"
mount: external mount: argv[1] = "NFS_SERVER :/MOUNT"
mount: external mount: argv[2] = "/mnt/MOUNT"
mount: external mount: argv[3] = "-v"
mount: external mount: argv[4] = "-o"
mount: external mount: argv[5] = "rw"
mount.nfs: timeout set for DATE
mount.nfs: trying text-based options 'vers=4,addr=NFS_SERVER,clientaddr=NFS_CLIENT'
mount.nfs: mount(2): Protocol not supported
mount.nfs: trying text-based options 'addr=NFS_SERVER'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying NFS_SERVER prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying NFS_SERVER prog 100005 vers 3 prot UDP port 635
^C
 

Cause

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