Topic "Win 2008 Server - (EOSError) A call to an OS function failed"

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Socko71
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When using commandline. scripts or Commander when I try to upload data to a remote server from a Window 2008 server that uses data deduplication I get the error (EOSError) A call to an OS function failed a various files through the tranafer until I abort it. Yet I can copy the exact set of files and folders to a 2003 server that doesn't have data deduplication and it transfers the files with no problem at all. I included 2 files label 2003 and 2008 of the transfers. I aborted the 2008 after a few errors.
WINSCP2003.log (3.13 MB) [Download]

Description: 2003 server no data deduplication

WINSCP2008.log (39.35 KB) [Download]

Description: 2008 server with data deduplication

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martin
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Thanks for your report.
I have sent you an email with a debug version of WinSCP to address you have used to register on this forum.
Socko71
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prikryl wrote:
Thanks for your report.
I have sent you an email with a debug version of WinSCP to address you have used to register on this forum.


Thanks I ran the debug version and included the log file and trace file. Is that all you needed?
Winscp Debug.zip (1.43 MB) Private file

Description: Contains log and trace file

martin
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Thanks. I'm sending you a new debug build.
Socko71
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prikryl wrote:
Thanks. I'm sending you a new debug build.


Sending 2 new files using latest debug winscp

Thanks
Winscp Debug-Socko71.zip (1.41 MB) Private file

Description: Contains log file and ytace file using Socko71 debug version of Winscp

martin
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Please one more time.
Socko71
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prikryl wrote:
Please one more time.


Thanks for putting your time into this issue
WinscpDB-Socko71-030615.zip (1.39 MB) Private file

Description: 2 filss log and trace

martin
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Thanks. It behaves really strange. It seems that accessing the affected file fails only once. When trying the same operation immediately after, it succeeds.
I'm sending you yet another build to confirm this.
Socko71
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prikryl wrote:
Thanks. It behaves really strange. It seems that accessing the affected file fails only once. When trying the same operation immediately after, it succeeds.
I'm sending you yet another build to confirm this.



sending 2 files log and trace...I ran it until I got 3 errors before aborting
Winscp Socko71b.zip (1.45 MB) Private file

Description: sending 2 files: log and trace

martin
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OK, if you do not mind, one more time...
Socko71
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prikryl wrote:
OK, if you do not mind, one more time...


Ran a long time and timed out on connections but does show where it failed on copies
Winscp030915.zip (6.19 MB) Private file

Description: 2 files trace and log

martin
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Socko71 wrote:
Ran a long time and timed out on connections but does show where it failed on copies

Thanks. Though there's no "A call to an OS function failed" error.
martin
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OK, I've investigated the log anyway, only to confirm that your system behaves inconsistently. The API call for the same file returns different results each time. There were no errors because the calls that fails is done for logging only. And the later call that's actually used for error-detection does not indicate any error anymore.
So it's looks like either bug in the system or some driver.
martin
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This issue has been added to the tracker:
https://winscp.net/tracker/show_bug.cgi?id=1355
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Martin Prikryl
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