Changes between Version 18 and Version 19 of BoincFiles


Ignore:
Timestamp:
01/05/17 21:45:23 (11 months ago)
Author:
davea
Comment:

--

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  • BoincFiles

    v18 v19  
    1212The BOINC client transfers files to and from project-operated '''data servers''' using HTTP.
    1313
    14 A file of a given name is '''immutable'''.
     14== File immutability ==
     15
     16The name of a file is called its "physical name".
     17A file of a given physical name is '''immutable'''.
    1518This means that all replicas of that file are assumed (and required) to be identical.
    1619If a file is changed, even by a single byte, it becomes a new file, and must be given a different name.
    1720
     21Note: systems for combining or compressing files, like tar and gzip, may add timestamps,
     22so archiving the same set of files can produce differing results.
     23With gzip, the --no-name option suppresses this.
     24
    1825== File properties ==
    1926
    20 Files have various properties, including:
     27You can assign various properties to files, including:
    2128
    22  * '''Physical name:''' unique identifier for the file.
     29 * '''Logical name:''' the name by which an application refers to a file.
    2330  Must be nonempty, at most 255 chars, and may not contain '..', '/', or '%'.
    2431 * '''Sticky:''' don't delete file on client (see below).