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From: Robert Pendell <shinji+gmane AT elite-systems DOT org>
Subject:  Re: 1.6e format.com hangs through ssh
Date:  Mon, 03 Dec 2007 18:04:00 -0500
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Larry Hall (Cygwin) wrote:
> srp010 wrote:
>> On Cygwin 1.6e on Windows 2003 Server EE format.com hangs formatting a
> 
> 
> There is no "Cygwin 1.6e".  The current Cygwin DLL package version is
> 1.5.24.  This package's version is typically the one reported if there's
> reason to suspect that the issue may be part of the POSIX emulation layer.
> 
> 
>> Veritas Volume when performed through ssh connection. Format can be 
>> interrupted
>> without issue but no progress is made after format asks "Proceed with 
>> Format
>> (Y/N)?". strace of the pid  also hangs.
> 
>> Here is output of the cmd:
>>   ./format Z:   The type of file system is NTFS
>>
>>   WARNING, ALL DATA ON NON-REMOVABLE DSIK DRIVE Z: WILL BE LOST!
>>   Proceed with Format (Y/N)? y
>>   --Hang--
>>
>> Problem scenario:
>>   ssh to Cygwin 1.6e on Windows box
>>   Create disk group
>>   Create Volume
>>   Assign drive letter
>>   format <hang>
>>
>> This scenario succeeds when performed on the system via DOS or Cygwin 
>> window. 
>> Once the volume has been formatted successfully format via ssh connection
>> no longer hangs.
>>
>> Windows and Cygwin are not my usual haunts. Google has offered little
>> help. I would be interested in any assistance in debugging and solving 
>> this
>> problem.
> 
> 
> My WAG is that you're not experiencing a hang at all.  You just don't see
> the output of format.com when it ends.  This is a known issue with
> DOS/Windows apps.  They don't understand ptys, which is what you're using
> when you connect via 'ssh' to the machine.  If you wait long enough, I'll
> bet you'll find the format completes, even though you get no feedback
> indicating that.  Just a WAG though.  I don't have a disk here that I feel
> like I want to format as a test. ;-)
> 
> 

I'll check this when I get home but the TTY bit definately sounds like 
what it is.  I just installed openssh and set it up as a service.


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