METADATA PEERING WITH IMPROVED INODES

摘要

Example apparatus and methods concern metadata peering that allows a file system to address a file in a local namespace while actually accessing the file using an address used by a shared secondary storage. This allows the file system to operate unmodified and more efficiently in a native mode that addresses files in the shared secondary storage using addresses local to a computer running the file system. An example method accesses an inode associated with a file that is stored in a shared secondary storage. The method accesses a local namespace identifier used by the file system to access the file and accesses a reference used by the shared secondary storage to access the file. The reference is not associated with the local namespace. The method stores an opaque value in the inode. The opaque value facilitates accessing the file in the shared secondary storage using the local namespace.

主权项

1. A non-transitory computer-readable storage medium storing computer-executable instructions that when executed by a computer cause the computer to perform a method, the method comprising:
accessing an inode associated with a file in a file system, where the file is stored in a shared secondary storage; accessing a local namespace identifier used by the file system to access the file, where the local namespace identifier is associated with a local namespace used by the file system; accessing a reference used by the shared secondary storage to access the file, where the reference is not associated with the local namespace; and storing indirection information in the inode, where the indirection information facilitates using the reference to access the file in the shared secondary storage, where the file is accessed by the file system using the local namespace identifier and the inode.