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| Automatic caching for VxFS file systems | ||
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| Prev | About SmartIO read caching for applications running on VxFS file systems | Next |
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| Automatic caching for VxFS file systems | ||
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| Prev | About SmartIO read caching for applications running on VxFS file systems | Next |
The SmartIO feature supports only one VxFS cache area on a system. For each system, all VxFS file systems that are cached share a single cache area of VxFS type.
The association type of a cache area indicates whether or not automatic caching is enabled for the system. The association type attribute for the VxFS cache area is persistent. The association type can be one of the following:
auto attribute (default)
The cache area is enabled for automatic caching. All file systems on the system are cached unless you explicitly disable caching for that file system. You do not need to explicitly enable caching on a file system. By default, a VxFS cache area has the auto attribute.
noauto attribute
The cache area is not enabled for automatic caching. No file systems are cached automatically. You must explicitly enable caching for each file system that you want cached. You do not need to explicitly disable a file system for caching, except to exclude a file system that was previously enabled.
A cache area is private to each node in a cluster. For a cluster file system, each of the nodes in the cluster has its own cache area. Caching occurs on a per-node basis and the cache contents are not shared across the nodes in the cluster. A file system with caching enabled is associated with the local cache area on each node.