[9fans] nfs timeouts

[9fans] nfs timeouts

[pouya+lists.9fans]

I recently set up NFS exports on a server on my local intranet.  I can mount NFS directories after running nfs(4) but when I tried to do a small dircp(1) it invariably failed at the same point for each of the directories I tried:

        term% nfs -p 666 -u /lib/ndb/glenda.passwd /lib/ndb/glenda.group somehost
        term% mount -a /srv/somehost /n/somedir /somepath
        term% dircp somelocaldir /somepath/someremotedir

        [after a while...]

        tar: error writing same/path/same/file: timeout

NetBSD, Linux, and macOS clients don't seem to have any issues.

Am I doing something wrong or does nfs(4) not work very well?

Thanks,
Pouya



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Re: [9fans] nfs timeouts

[pouya+lists.9fans]

> I recently set up NFS exports on a server on my local intranet.  I can mount NFS directories after running nfs(4) but when I tried to do a small dircp(1) it invariably failed at the same point for each of the directories I tried:
> 
>         term% nfs -p 666 -u /lib/ndb/glenda.passwd /lib/ndb/glenda.group somehost
>         term% mount -a /srv/somehost /n/somedir /somepath
>         term% dircp somelocaldir /somepath/someremotedir

Sorry, meant:
        term% dircp somelocaldir /n/somedir/someremotedir

> 
>         [after a while...]
> 
>         tar: error writing same/path/same/file: timeout
> 
> NetBSD, Linux, and macOS clients don't seem to have any issues.
> 
> Am I doing something wrong or does nfs(4) not work very well?
> 
> Thanks,
> Pouya

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Re: [9fans] nfs timeouts

[ori]

Quoth pouya+lists.9fans@nohup.io:
> I recently set up NFS exports on a server on my local intranet.  I can mount NFS directories after running nfs(4) but when I tried to do a small dircp(1) it invariably failed at the same point for each of the directories I tried:
> 
>         term% nfs -p 666 -u /lib/ndb/glenda.passwd /lib/ndb/glenda.group somehost
>         term% mount -a /srv/somehost /n/somedir /somepath
>         term% dircp somelocaldir /somepath/someremotedir
> 
>         [after a while...]
> 
>         tar: error writing same/path/same/file: timeout
> 
> NetBSD, Linux, and macOS clients don't seem to have any issues.
> 
> Am I doing something wrong or does nfs(4) not work very well?
> 

It's probably NFS. It's likely been rarely used,
even relative to other plan 9 software.

If you can capture debug traces on both client
and server side, that may be helpful in debugging.


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Re: [9fans] nfs timeouts

[Steve Simon]

hi

i am afraid there are long standing issues in nfs(4). i had problems years ago using it to read image files from a pluto video disk store.

from memory the issue was when doing a directory scan of the pluto it would take so long nfs(4) would timeout, and this was not gracefully handled properly and nfs would fault.

i never managed to get to the bittom of it and just used cifs(4) instead.

-Steve




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