[OpenAFS-devel] Re: [OpenAFS] Problem with large data transfer (WinNT AFS, please HELP!)

[Shyh-Wei Luan]

Have you tried xcopy?  It may work better for your need.  Explorer seems to
stubbornly want to scan the whole source sub-tree before starting to copy
the first file.  My experiment with using it to copy a super large tree
never went beyond the "prepare copy" stage.

Your AFS directory is not really publicly readable.  I was only able to get
your cell root directory and got access denied at the platform directory.

Shyh-Wei Luan


Lubos Kejzlar <kejzlar@civ.zcu.cz> on 02/26/2002 12:45:00 AM

To:    Shyh-Wei Luan/Almaden/IBM@IBMUS
cc:
Subject:    Re: [OpenAFS] Problem with large data transfer (WinNT AFS,
       please HELP!)



Hi,

On Tue, 26 Feb 2002, Shyh-Wei Luan wrote:

> Is it possible that your AFS server is overloaded?  The 1009 event id
> indicates an RX timeout, i.e., the server did not respond to the client
in
> time.  If you have a 2 gig volume being read by a large number of users
> (how big was your pilot) simultaneously.  The server might be slowed down
> significantly.  You may want to replicate the volume and somehow scatter
> the installation time of users.

I don't think so. There is only one such copy-test at time (but FS serves
simultaneously other request). As I mentioned before, timeout occurs during
small (typically <256k) file transfer and there are no active connections
(reader_wait) on affected client (from rxdebug listing). FS seems to have
enough network, disk and memory resources available AFAIK.

> I am testing a large copy here to see if I can reproduce the error.

You can look at (and try to copy) our actual (publicly readable) files
(see attachment) if you can. I would be happy to provide any further info
to help you give us any help or suggestions!

Thanks again!

Best regards,
 Lubos
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