About Omneon MediaGrid - Harmonic Inc
About Omneon MediaGrid - Harmonic Inc About Omneon MediaGrid - Harmonic Inc
Accessing the Omneon MediaGrid Table 4. Mount Options Additional Mount Options for Macintosh The following file system mounting options are available using the Macintosh FSD. IMPORTANT: Do not modify any of the values in this table without first contacting Technical Support. Option Description username=abc Specify the required user name. You are prompted for a user name if it is not specified. password=abc Specify the required password. You are prompted for a password if it is not specified. domain=abc Specify the Windows domain name. readahead=n Specify the number of slices to cache with read-ahead caching. Supported numbers are n>=0. The default is 3. • For n>=1, n many slices are cached. • For n=0, 256k bytes of data are cached. Some degree of caching is required to maintain acceptable system performance. allnic/multinic Specify the use of all interfaces in the machine. There is no option to specify explicitly which interfaces to use. iflist Specify a list of network interfaces, separated by a colon, “:”. For example, iflist=a:b where a and b are the names of different network interfaces. attrcache=abc Specify the maximum timeout for attribute cache in seconds. readDataPriority=abc Specify read data priority. Supported types are as shown below in increasing priority level, with the default being omTagPriorityNormal: • omTagPriorityBackground • omTagPriorityLow • omTagPriorityNormal • omTagPriorityRealtime • omTagPrioritySystem writeDataPriority=abc Specify write data priority. Supported types are as shown below in increasing priority level, with the default being omTagPriorityNormal: • omTagPriorityBackground • omTagPriorityLow • omTagPriorityNormal • omTagPriorityRealtime • omTagPrioritySystem caseinsensitive Enable support for case insensitive namespace operations for client applications. handletimeout=abc Specify the timeout for caching read handles for recycling. noopendelete Specify a deletion and renaming protection. The deletion or renaming file action is blocked if another application on the same machine or another client is opening the file. This is Windows file system behavior so, normally, it is specified in the ContentBridge and the mount point belongs to Windows CIFS. 162 Installation and Configuration Guide
Table 4. Mount Options (Continued) Option Description Mount Options for Post Production Workflows Accessing the Omneon MediaGrid singlewriter Specify exclusive write access. This means only one thread can write to a file. nocrconread Disable CRC check on read. maxdeferredclose=n Specifies the maximum number of handles on a per mount basis. The default value is 64. Setting this to zero will result in the close system call blocking until data is flushed to the MediaGrid. Setting this to zero will increase latency times when working with a large number of files maxsmallfilesize=n Hint to pre-open prediction code. The default value is 1048576. smallfilewindow=n Hint to pre-open prediction code. The default value is 500. smallfilethreshold=n Hint to pre-open prediction code. The default value is 3. cachefilesize=n Specifies the maximum number of bytes to pre-read for a file. The default value is 20971520. maxpendingbulkclose=n Specifies the maximum number of handles for deferred close on a per driver basis. The default value is 128. Setting to zero may result in the close system call blocking until the handle is closed in the MediaGrid. Setting this to zero will increase latency times when working with a large number of files. numberpreopen=n Specifies the number of files to open in advance based on prediction logic. The default value is 16. With release 3.1, MediaGrid provides improved performance in post-production workflows with applications such as Autodesk Smoke*. To take advantage of these improvements, use the following mount options: smallfilewindow=5000,maxsmallfilesize=50000000,readahead=12 For assistance with using these mount options, contact Technical Support. Mounting an Omneon MediaGrid File System Using Linux Follow these steps to mount the Omneon MediaGrid file system from a Linux computer. These instructions assume you have installed the Omneon MediaGrid FSD for Linux. Refer to Connecting Clients to Omneon MediaGrid Using ContentBridge for instructions on mounting an Omneon MediaGrid file system without using the Omneon MediaGrid FSD for Linux. To mount an Omneon MediaGrid file system: 1. Use the type “omfs” in the mount command to access the Omneon MediaGrid file system, for example: mount –t omfs /mediagrid/filesys /mnt –o username=username,password=password NOTE: This information is case-sensitive. Omneon, Now Part of Harmonic 163
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Table 4. Mount Options (Continued)<br />
Option Description<br />
Mount Options for Post Production Workflows<br />
Accessing the <strong>Omneon</strong> <strong>MediaGrid</strong><br />
singlewriter Specify exclusive write access. This means only one thread can write to a file.<br />
nocrconread Disable CRC check on read.<br />
maxdeferredclose=n Specifies the maximum number of handles on a per mount basis. The default value is 64.<br />
Setting this to zero will result in the close system call blocking until data is flushed to the<br />
<strong>MediaGrid</strong>. Setting this to zero will increase latency times when working with a large<br />
number of files<br />
maxsmallfilesize=n Hint to pre-open prediction code. The default value is 1048576.<br />
smallfilewindow=n Hint to pre-open prediction code. The default value is 500.<br />
smallfilethreshold=n Hint to pre-open prediction code. The default value is 3.<br />
cachefilesize=n Specifies the maximum number of bytes to pre-read for a file. The default value is<br />
20971520.<br />
maxpendingbulkclose=n Specifies the maximum number of handles for deferred close on a per driver basis. The<br />
default value is 128. Setting to zero may result in the close system call blocking until the<br />
handle is closed in the <strong>MediaGrid</strong>. Setting this to zero will increase latency times when<br />
working with a large number of files.<br />
numberpreopen=n Specifies the number of files to open in advance based on prediction logic. The default<br />
value is 16.<br />
With release 3.1, <strong>MediaGrid</strong> provides improved performance in post-production workflows with<br />
applications such as Autodesk Smoke*. To take advantage of these improvements, use the following<br />
mount options:<br />
smallfilewindow=5000,maxsmallfilesize=50000000,readahead=12<br />
For assistance with using these mount options, contact Technical Support.<br />
Mounting an <strong>Omneon</strong> <strong>MediaGrid</strong> File System Using Linux<br />
Follow these steps to mount the <strong>Omneon</strong> <strong>MediaGrid</strong> file system from a Linux computer. These<br />
instructions assume you have installed the <strong>Omneon</strong> <strong>MediaGrid</strong> FSD for Linux. Refer to Connecting<br />
Clients to <strong>Omneon</strong> <strong>MediaGrid</strong> Using ContentBridge for instructions on mounting an <strong>Omneon</strong><br />
<strong>MediaGrid</strong> file system without using the <strong>Omneon</strong> <strong>MediaGrid</strong> FSD for Linux.<br />
To mount an <strong>Omneon</strong> <strong>MediaGrid</strong> file system:<br />
1. Use the type “omfs” in the mount command to access the <strong>Omneon</strong> <strong>MediaGrid</strong> file system, for<br />
example:<br />
mount –t omfs /mediagrid/filesys /mnt –o username=username,password=password<br />
NOTE: This information is case-sensitive.<br />
<strong>Omneon</strong>, Now Part of <strong>Harmonic</strong> 163