You might see the File changed as we read it warning in the following situations:
When you use the Oracle Solaris SMB client to mount an SMB share and use the gtar utility to write the share to a tape
When you use the Oracle Solaris SMB client to mount an SMB share and use the tar utility to check file attributes after setting them
Other than these warnings, the tar and gtar operations succeed as expected.
You can ignore these warnings.