How to Verify Options Used With the mount Command

In the Solaris 2.6 release and in any versions of the mount command that were patched after the 2.6 release, no warning is issued for invalid options. The following procedure helps determine whether the options that were supplied either on the command line or through /etc/vfstab were valid.

For this example, assume that the following command has been run:

# mount -F nfs -o ro,vers=2 bee:/export/share/local /mnt

1. Verify the options, by running the following command.

   % nfsstat -m /mnt from bee:/export/share/local Flags: vers=2,proto=tcp,sec=sys,hard,intr,dynamic,acl,rsize=8192,wsize=8192, retrans=5

   The file system from bee has been mounted with the protocol version set to 2. Unfortunately, the nfsstat command does not display information about all of the options, but using the nfsstat command is the most accurate way to verify the options.

2. Check the entry in /etc/mnttab.

   The mount command does not allow invalid options to be added to the mount table, so verifying that the options listed in the file match those listed on the command line is a way to check those options not reported by the nfsstat command.

   # grep bee /etc/mnttab bee:/export/share/local /mnt nfs ro,vers=2,dev=2b0005e 859934818