Re: bug in linux mount? (says NetApp)

[James Pearson <james-p@moving-picture.com>]

Trond Myklebust wrote:
> 
> It has nothing to do with the mount timeout: Chuck is talking about the
> retransmission timeout for TCP connections 'timeo' which should indeed
> be set to a high value since TCP guarantees message delivery (unlike UDP
> which requires a small timeo value). Setting it too low means that you
> end up spamming your server with a load of unnecessary retransmissions.
> 
> This was indeed the case for some older versions of 'mount' and also for
> older versions of the am-utils/amd automounters.

Do you know how you tell what value of timeo is being used by default?

The source code for mount (nfsmount.c, part of util-linux v2.12) has the 
comment:

   /* timeo is filled in after we know whether it'll be TCP or UDP */

Can I assume, in this case, the value of timeo will be a suitable value 
for tcp mounts?

Thanks

James Pearson


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