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Using nofastfilesize z/OS Network File System Guide and Reference SC23-6883-00 |
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When you use the default, nofastfilesize attribute,
the NFS reads the entire file or member to get the file size. It
stores the file size value in cache until timeout. If the server's
default has been changed to fastfilesize, you
can still use the nofastfilesize attribute to override it.
Using
this attribute might cause a delay when first accessing very large
data sets.
Note: When directly mounting on a fully qualified
data set name and nofastfilesize is specified, the server must return
the mount size as part of getting the attributes for the mount. This
can slow down the completion of the mount command.
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