By default, shares that are mounted by the mount_smbfs command enable Oracle Solaris extended attributes by setting the xattr mount option. However, if the SMB server does not support Windows named streams, shares mounted by mount_smbfs set the noxattr mount option.
To verify whether the xattr or noxattr mount option is used, type the following command:
$ mount -v | grep 'type smbfs'
The following example shows that the share mounted on /mnt has xattr set, while the share mounted on /tmp has noxattr set:
$ mount -v | grep 'type smbfs' //root@solarsystem/tmp on /mnt type smbfs remote/read/write/setuid/devices/intr/xattr/dev=5080000 on Tue Jun 5 18:20:48 2012 //root@pluto/files on /files type smbfs remote/read/write/setuid/devices/intr/noxattr/dev=4800000 on Mon Jun 4 11:37:26 2012