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Data ONTAP 8.2 File Access and Protocols

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Data ONTAP 8.2 File Access and Protocols
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  Data ONTAP  ®   8.2 File Access and Protocols Management Guide For 7-Mode NetApp, Inc.495 East Java DriveSunnyvale, CA 94089U.S.Telephone: +1(408) 822-6000Fax: +1(408) 822-4501Support telephone: +1 (888) 463-8277Web: www.netapp.comFeedback: doccomments@netapp.comPart number: 215-07984_A0May 2013  Contents Considerations before configuring file access .......................................... 13 File protocols that Data ONTAP supports ................................................................ 13How Data ONTAP controls access to files ............................................................... 13Authentication-based restrictions .................................................................. 13File-based restrictions ................................................................................... 13 How Data ONTAP supports file access using NFS ................................. 15 Enabling or disabling NFS on the storage system ..................................................... 15Exporting or unexporting file system paths .............................................................. 16Editing the / etc/exports file ........................................................................... 16Using the exportfs command ......................................................................... 17Enabling and disabling fencing of one or more NFS clients from one or morefile system paths .................................................................................................. 19Displaying the actual file system path for an exported file system path ................... 20Displaying the export options for a file system path ................................................. 21How the access cache works ..................................................................................... 21Adding entries to the access cache ................................................................ 22Removing entries from the access cache ....................................................... 23Viewing access cache statistics ..................................................................... 23Optimizing access cache performance .......................................................... 24Setting access cache timeout values .............................................................. 24Enabling Kerberos v5 security services for NFS ...................................................... 25NFS clients that support Kerberos v5 security services ................................ 26Configuring Kerberos v5 security services for NFS to use an Active-Directory-based KDC .............................................................................. 26Conf iguring Kerberos v5 security services for NFS to use a UNIX-basedKDC ......................................................................................................... 29Debugging mounting problems ................................................................................. 35Displaying mount service statistics ............................................................... 35Tracing mountd requests ............................................................................... 35Use of hard mounts ....................................................................................... 36Displaying NFS statistics .......................................................................................... 36Controlling NFS requests from nonreserved ports .................................................... 36Table of Contents | 3  Enabling or disabling NFSv2 .................................................................................... 37Enabling or disabling NFSv3 .................................................................................... 37Support for VMware vStorage over NFS .................................................................. 38Enabling or disabling VMware vStorage over NFS ...................................... 38Displaying statistics for VMware vStorage over NFS .................................. 39Differences in file system ID handling for NFSv3 and NFSv4 ................................ 39Supporting NFSv4 clients ......................................................................................... 40NFSv4.0 functionality supported by Data ONTAP ...................................... 40Limitations of Data ONTAP support for NFSv4 .......................................... 40How the pseudo-fs in NFSv4 affects mountpoints ........................................ 41Enabling or disabling NFSv4.0 ..................................................................... 42Specifying the user ID domain for NFSv4 .................................................... 42Managing NFSv4 ACLs ................................................................................ 42Managing NFSv4 file delegations ................................................................. 45Configuring NFSv4 file and record locking .................................................. 48How the name server database cache works ................................................. 50Flushing the name server database cache ...................................................... 50Differences in NFS user and group ID formats ............................................. 51Allowing or disallowing NFSv4 user and group IDs as numeric strings ...... 51Supporting PC-NFS clients ....................................................................................... 52How the pcnfsd daemon works ..................................................................... 52Enabling or disabling the pcnfsd daemon ..................................................... 52Creating PC-NFS user entries in the storage system's local files .................. 53How umask works with NFS file permissions .............................................. 53Defining the umask for files and directories that PC-NFS users create ........ 54Supporting WebNFS clients ...................................................................................... 54Enabling or disabling the WebNFS protocol ................................................ 54Setting a WebNFS root directory .................................................................. 55Support for NFS over IPv6 ........................................................................................ 56Enabling or disabling NFS over IPv6 ........................................................... 56Textual representation of IPv6 addresses ...................................................... 56 File access using CIFS ................................................................................ 57 Unsupported Windows features ................................................................................ 57Configuring CIFS licenses ........................................................................................ 57Connecting the MMC to the storage system ............................................................. 58Configuring CIFS on your storage system ................................................................ 58 4  | File Access and Protocols Management Guide
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