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file locking |
Also found in: Wikipedia | 0.03 sec. |
file lockingfile locking [′fil ‚läk·iŋ] (computer science) A technique that prevents processing of a file by more than one program or user at a time, ensuring that a file in use by one user is made unavailable to others. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Although NFSv4 introduced major improvements in locking, NFSv4 clients cannot detect that a file lock has been released abnormally, possibly causing the underlying file data to be corrupted. Unlike other WAN optimization or application acceleration approaches which focus only on network acceleration of consolidated data, Availl WAFS is true real-time server-to-server mirror which delivers instant file access, with 100% file version and file lock coherence everywhere. To allow clients to share access to a file, NT and Unix operating systems use different implementations for three types of file locking features: (1) file locks to protect an entire file; (2) record locks to protect portions of a file defined by an offset into the file and a range of bytes from that offset; and (3) cache locks to protect the coherency (stability) of a file shared over the network. |
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