About Omneon MediaGrid - Harmonic Inc

Accessing the Omneon MediaGrid
• Duplicate ACL entries are not allowed within an ACL. A duplicate is an entry that has the same
user or group with the same operation mode, such as Allow (or Inherit) or Deny.
• The same user/group can have one Allow (or Inherit) entry and one Deny entry.
Viewing File and Directory Permissions on Linux
File and directory permissions are visible using the “ls” command and can be modified using the
“chmod” command. The standard commands apply for managing file permissions. As an example,
however, you can remove read permissions for all users from a file or directory by issuing the
following command:
chmod a-r
Changing File and Directory Permissions on Linux
By default the Omneon MediaGrid Linux FSD does not reflect the Omneon MediaGrid ACL security
permissions for a file or directory on the Omneon MediaGrid file system. To have the Linux FSD
translate between Omneon MediaGrid ACLs and Linux mode permission bits on files, use the –o
mode option on the mount command line. For example:
mount –t omfs /mediagrid/filesys /mnt –o username=user1,password=pass1,mode
With this capability enabled, file permission bits may be tested and manipulated through the normal
Linux interfaces.
NOTE: Turning this capability on reduces performance related to directory access operations, such as
directory listing.
Setting up Soft Links
A soft link is used to create a symbolic link to another file or directory.
To set up a soft link:
1. Mount the file system.
2. Change to the directory for which you want to create a link, or provide the file or directory path.
3. Create the soft link using the following format:
ln -s
For example to create a soft link to directory 1 from directory 2, you would enter the following:
ln -s
Soft links are visible using the Omneon ContentManager application. See the Omneon ContentManager
User’s Guide for details.
Omneon, Now Part of Harmonic 171