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Article View: comp.os.os2.networking
Article #1389

Re: TCP/IP CSD Problem

#1389
From: Charles Carlson
Date: Sat, 23 Jan 1993 19:10
25 lines
1950 bytes
In <16B5D10802.MACE@HDQCMS2H.UTSD.ATT.COM> MACE@HDQCMS2H.UTSD.ATT.COM writes:

>After applying the latest CSDs for TCPIP and NFS, we are experiencing data
>integrity problems with NFS.  When moving data between two OS/2 machines
>with NFS (or an OS/2 machine and a VM host running WLFS/VM) using copy
>or xcopy, we get occassional hangs.  When there is no hang, the copied
>file is not the same as the original (eg, ZIP or ZOO files fail CRC,
>files do not compare with a copy brought over on floppy).  No errors
>are reported and DIR commands appear to work correctly.  If you apply
>the CSD, be careful with your data.  NFS and TCP/IP at UN32132.

I had (and reported to IBM) this problem several months ago.  
How slow, or if fast, how loaded is your NFS server?  I was running Unix
on a 4meg 386sx-16 as a server, and when using 8000 byte NFS packets, I would
get corrupted data after a copy or xcopy.  I didn't have any problems at all
when I copied to/from a 386DX-25.  Dropping the packet size to 4K fixed
the problem.  I just upgraded my server, and was going to try 8000 byte
packets again.  There goes that idea I guess.


-- 
/ Charles Carlson  umcarls9@ccu.Umanitoba.CA  
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Message-ID: <C1BMM5.84v@ccu.umanitoba.ca>
Path: arc1-ca.pugleaf.net!sparky!uunet!utcsri!newsflash.concordia.ca!mizar.cc.umanitoba.ca!umcarls9
References: <1jmip3INNi2h@swrinde.nde.swri.edu> <16B5D10802.MACE@HDQCMS2H.UTSD.ATT.COM>

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Newsgroups: comp.os.os2.networking
Path: arc1-ca.pugleaf.net!sparky!uunet!utcsri!newsflash.concordia.ca!mizar.cc.umanitoba.ca!umcarls9
From: umcarls9@ccu.umanitoba.ca (Charles Carlson)
Subject: Re: TCP/IP CSD Problem
Message-ID: <C1BMM5.84v@ccu.umanitoba.ca>
Sender: news@ccu.umanitoba.ca
Nntp-Posting-Host: asimov.cc.umanitoba.ca
Organization: University of Manitoba, Winnipeg, Canada
References: <1jmip3INNi2h@swrinde.nde.swri.edu> <16B5D10802.MACE@HDQCMS2H.UTSD.ATT.COM>
Date: Sat, 23 Jan 1993 19:10:53 GMT
Lines: 25