I wrote two scripts - and actually, I was able to trigger it by just making the files with this:

for i in {1..1000}
do
   echo This is a test file > $i.txt
done

The second is basicly the same, just moving the file to a new name, but it doesn't look like that is required.

Seems any change to the directory list tables can trigger this.


On 10-11-17 03:11 PM, Brian Stamper wrote:

What thresholds are you using to reliably reproduce the issue? We only get periodic file deliveries, so we see this once a month or so. How many files definitely reproduce the issue, and does their size matter or is it specifically number? I can attempt to reproduce here against a variety of nfs servers.

-brian


On 11/17/10 12:06 PM, "Jason Kendall" <[email protected]> wrote:

    Just tried it on an older box I have here: 2.6.19-skas3-v9-pre9
    (client) connecting to my drobo running 2.6.22.18 (Custom) and had
    the same issue.

    So I am again, back to square one.. But with a second person
    having the same issue.


    On 10-11-17 02:37 PM, Brian Stamper wrote:

        Re: NFS duplicate filenames Centos nfs4 server -
        2.6.18-194.11.3.el5
        RHEL nfs3 server - 2.6.18-194.17.1.el5
        Fedora 13 client - 2.6.34.7-56.fc13.x86_64

        I'm not registered on the Ubuntu support site, I found your
        issue via google.

        -brian

        On 11/17/10 11:26 AM, "Jason Kendall" <[email protected]> wrote:


            Damnit.. That means its no longer my Drobo causing the issue.

            Could you layout the clients with kernel versions please?
            I'd like to go back to tracking this down. Maybe send it
            to me and the ticket. Your the first person to come
            forward with the same issue.


            On Wed, Nov 17, 2010 at 2:23 PM, Brian Stamper
            <[email protected]> wrote:


                Varies actually, we've seen it on Fedora 13 clients
                connecting to a CentOS 5.5 server via nfsv4 and those
                same clients connecting to RHEL 5.5 server via nfsv3

                -brian



                On 11/17/10 11:20 AM, "Jason Kendall"
                <[email protected] <http://[email protected]> > wrote:


                    Interesting.. what is your backend? (NFS Server?)


                    On Tue, Nov 16, 2010 at 11:56 AM, Brian Stamper
                    <[email protected] <http://[email protected]> >
                    wrote:


                        
http://lists.debian.org/debian-kernel/2010/10/msg00339.html

                        Did you ever find an answer for this issue?
                         I'm running into the same thing on Fedora 13
                        and yours is the only report of it I've seen.
                         Same situation, I have an incoming directory
                        with thousands of files that users attempt to
                        mv, resulting in duplicate filenames showing
                        up then disappearing eventually on their own.
                         One difference I've seen is that if I
                        mv/rename a file, it is listed singular, but
                        if I rename it back, it's once again
                        duplicate, at least temporarily.

                        If you got any further diagnosis or answers on
                        this, I'd appreciate any info you have.

                        -brian









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