Mount options for nfs

Mount options for nfs

Instead of a textual option string, parsed by the kernel, the nfs file
system expects a binary argument of type struct nfs_mount_data. The program mount itself parses the following options of the form 'tag=value',
and puts them in the structure mentioned: rsize=n, wsize=n, timeo=n, retrans=n,
acregmin=n, acregmax=n, acdirmin=n, acdirmax=n, actimeo=n, retry=n,
port=n, mountport=n, mounthost=name, mountprog=n, mountvers=n, nfsprog=n,
nfsvers=n, namlen=n. The option addr=n is accepted but ignored. Also the following Boolean options, possibly preceded
by no are recognized: bg, fg, soft, hard, intr, posix, cto, ac, tcp, udp,
lock. For details, see nfs(5).

Especially useful options include

rsize=32768,wsize=32768
This causes the NFS client to try to negotiate a buffer size
up to the size specified. A large buffer size does improve performance,
but both the server
and client have to support it. In the case where one of these does not
support the size specified, the size negotiated will be the largest
that both support.
intr
This will allow NFS operations (on hard mounts) to be interrupted while waiting for a response from the server.
nolock
Do not use locking. Do not start lockd.

Mount options for nfs4

Instead of a textual option string, parsed by the kernel, the nfs4 file
system expects a binary argument of type struct nfs4_mount_data. The program mount itself parses the following options of the form 'tag=value',
and puts them in the structure mentioned: rsize=n, wsize=n, timeo=n, retrans=n,
acregmin=n, acregmax=n, acdirmin=n, acdirmax=n, actimeo=n, retry=n,
port=n, proto=n, clientaddr=n, sec=n. The option addr=n is accepted but ignored. Also the
following Boolean options, possibly preceded by no are recognized: bg, fg, soft, hard, intr, cto, ac,
For details, see nfs(5).

Especially useful options include

rsize=32768,wsize=32768
This causes the NFS4 client to try to negotiate a buffer size
up to the size specified. A large buffer size does improve performance,
but both the server
and client have to support it. In the case where one of these does not
support the size specified, the size negotiated will be the largest
that both support.
intr
This will allow NFS4 operations (on hard mounts) to be interrupted while waiting for a response from the server.