[Bug 1328156] [NEW] Problem with directory listing of nfs filesystem

[luckyrings]

Public bug reported:

I have problem with NFS file systems which have been mounted on my
client computer with Ubuntu 12.04.4 LTS. The server is a non Ubuntu
distribution (TeraStation TS-WXL / FW 1.63).

After mounting the exported file system on my Ubuntu and doing a
directory listing, the listing is not possible.

It shows only Input/Output error.

Everything else like addressing single file (with rm, cp....)  or
changing directory command works fine. I found out that the error
appears only when a certain amount of files together with certain file
name length has been stored in the affected folder.

Here some example output when the error appears. The user / server /
path has been anonymized.

user at server:/media/example/test$ ls
100000000000000000000000000000000000  19999999999999999999999                6666666666666666666666666666666666   bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1111111111111111111111111             200000000000000000000000000000         777777777777777777777777777777       file2
111111111111111111111111111111111118  210000000000000000000000000000         888888888888888888888888             long filename filname 0223123131.121321
11111111111111111111111112            220000000000000000000000000000         999999999999999999999999
1111111111111111111111111333          2300000000000000000000000000000000000  99999999999999999999999999999999999
11111111111111111111111144444         6666666666666666666                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa
user at server:/media/example/test$ touch file34
user at server:/media/example/test$ ls
ls: reading directory .: Input/output error
user at server:/media/example/test$ rm "long filename filname 0223123131.121321"
user at server:/media/example/test$ ls
100000000000000000000000000000000000  11111111111111111111111144444   2300000000000000000000000000000000000  999999999999999999999999                 file34
1111111111111111111111111             19999999999999999999999         6666666666666666666                    99999999999999999999999999999999999
111111111111111111111111111111111118  200000000000000000000000000000  6666666666666666666666666666666666     aaaaaaaaaaaaaaaaaaaaaaaaaaaaa
11111111111111111111111112            210000000000000000000000000000  777777777777777777777777777777         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
1111111111111111111111111333          220000000000000000000000000000  888888888888888888888888               file2
user at server:/media/example/test$ touch file35
user at server:/media/example/test$ ls
ls: reading directory .: Input/output error
user at server:/media/example/test$

** Affects: nfs-utils (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1328156

Title:
  Problem with directory listing of nfs filesystem

Status in “nfs-utils” package in Ubuntu:
  New

Bug description:
  I have problem with NFS file systems which have been mounted on my
  client computer with Ubuntu 12.04.4 LTS. The server is a non Ubuntu
  distribution (TeraStation TS-WXL / FW 1.63).

  After mounting the exported file system on my Ubuntu and doing a
  directory listing, the listing is not possible.

  It shows only Input/Output error.

  Everything else like addressing single file (with rm, cp....)  or
  changing directory command works fine. I found out that the error
  appears only when a certain amount of files together with certain file
  name length has been stored in the affected folder.

  Here some example output when the error appears. The user / server /
  path has been anonymized.

  user at server:/media/example/test$ ls
  100000000000000000000000000000000000  19999999999999999999999                6666666666666666666666666666666666   bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
  1111111111111111111111111             200000000000000000000000000000         777777777777777777777777777777       file2
  111111111111111111111111111111111118  210000000000000000000000000000         888888888888888888888888             long filename filname 0223123131.121321
  11111111111111111111111112            220000000000000000000000000000         999999999999999999999999
  1111111111111111111111111333          2300000000000000000000000000000000000  99999999999999999999999999999999999
  11111111111111111111111144444         6666666666666666666                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  user at server:/media/example/test$ touch file34
  user at server:/media/example/test$ ls
  ls: reading directory .: Input/output error
  user at server:/media/example/test$ rm "long filename filname 0223123131.121321"
  user at server:/media/example/test$ ls
  100000000000000000000000000000000000  11111111111111111111111144444   2300000000000000000000000000000000000  999999999999999999999999                 file34
  1111111111111111111111111             19999999999999999999999         6666666666666666666                    99999999999999999999999999999999999
  111111111111111111111111111111111118  200000000000000000000000000000  6666666666666666666666666666666666     aaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  11111111111111111111111112            210000000000000000000000000000  777777777777777777777777777777         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
  1111111111111111111111111333          220000000000000000000000000000  888888888888888888888888               file2
  user at server:/media/example/test$ touch file35
  user at server:/media/example/test$ ls
  ls: reading directory .: Input/output error
  user at server:/media/example/test$

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