Re: NFS readdir problem

[Richard Mittendorfer]

Also sprach "Xin Zhao" <uszhaoxin@xxxxxxxxx> (Mon, 15 May 2006 11:36:53
-0400):
> Hi,

Hello,

> I use NFS to read a remote directory, which contains 56 entries. But
> after the read, "ls -al" only show 26, 31, or 51 entries in three test
> runs.
> 
> I have read the NFS  code "encode_entry" and related "nfs_readdir",
> "nfs3_proc_readdir"..., but haven't find the right place that can
> cause this problem.
> 
> Is there anyone has similar experience? Please help!

There is a note in the performance section from the NFS-HOWTO[1]. It
suggests adjusting the r- and wsize mount parameters:

_._. .._ _  .... . ._. .  __..__  _._. .._ _  .... . ._. .

Directly after mounting with a larger size, cd into the mounted file
system and do things like ls, explore the filesystem a bit to make sure
everything is as it should. If the rsize/wsize  is too large the
symptoms are very odd and not 100% obvious. A typical symptom is
incomplete file lists when doing ls, and no error messages, or reading
files failing mysteriously with no error messages. After establishing
that the given rsize/ wsize works you can do the speed tests again.
Different server platforms are likely to have different optimal sizes.
_._. .._ _  .... . ._. .  __..__  _._. .._ _  .... . ._. .

[1] http://www.tldp.org
> Thanks,
> -x

sl ritch
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