[Swift-devel] [Bug 90] New: Ability to identify filesystem problems

[bugzilla-daemon at mcs.anl.gov]

http://bugzilla.mcs.anl.gov/swift/show_bug.cgi?id=90

           Summary: Ability to identify filesystem problems
           Product: Swift
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: General
        AssignedTo: hategan at mcs.anl.gov
        ReportedBy: hategan at mcs.anl.gov


Currently there is some ambiguity between a problem with a shared file system
on a cluster and an application not having produced certain output files.

To help in troubleshooting, this distinction should be eliminated. A way to do
this would be for the wrapper, which runs on the worker node, to always produce
a well determined file that can be can be checked before staging out files.
Should that file be missing, it would indicate that there is some conflict
between what is on the filesystem on the worker node, and what is seen by the
file server on, typically, the head node.


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