fatrace

read: Value too large for defined data type

Bug #1161989 reported by epitron
28
This bug affects 5 people
Affects Status Importance Assigned to Milestone
fatrace
Fix Released
Undecided
Unassigned
fatrace (Debian)
Fix Released
Unknown
fatrace (Ubuntu)
Fix Released
Undecided
Unassigned

Bug Description

'fatrace' is a great little program, but it seems to have trouble with large files (> 2gigs).

If I try to access one of these files while 'fatrace' is running, it prints "read: Value too large for defined data type", and terminates.

I'm currently looking for a solution.

See original description
epitron (chris-ill-logic)
description: updated
description: updated
epitron (chris-ill-logic)
description: updated
Revision history for this message
epitron (chris-ill-logic) wrote :

Turns out, this is a bug in the kernel.

This patch fixes it: https://patchwork.kernel.org/patch/2142341/

But, as of linux v3.8.4, it still hasn't been included.

Revision history for this message
epitron (chris-ill-logic) wrote :

So, I've filed this bug in a few places, and it's still unresolved.

The Linux kernel is ignoring the patch. The fanotify API says that you should be able to specify O_LARGEFILE when you use fanotify_init (in the last comment): https://bugs.archlinux.org/task/34520

I've read that putting "#define _LARGEFILE_SOURCE / #define _FILE_OFFSET_BITS 64" at the top of your .c file should enable largefile support, but I think that only works within that one C file. The error is happening inside the fanotify kernel module, which is what's actually opening the file.

Revision history for this message
Martin Pitt (pitti) wrote :

Fixed in trunk r54.

Changed in fatrace:
status: New → Fix Committed
Changed in fatrace (Ubuntu):
status: New → Fix Committed
Revision history for this message
Martin Pitt (pitti) wrote :

Fixed in new upstream release: https://launchpad.net/fatrace/trunk/0.7

Changed in fatrace:
status: Fix Committed → Fix Released
Bug Watch Updater (bug-watch-updater)
Changed in fatrace (Debian):
status: Unknown → New
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package fatrace - 0.7-1

---------------
fatrace (0.7-1) unstable; urgency=medium

  * New upstream release:
    - Use O_LARGEFILE to fix "Value too large for defined data type" error
      with large files on some platforms. (LP: #1161989, Closes: #722901)
    - Increase buffer size to 256 KiB. (LP: #1312095)

 -- Martin Pitt <email address hidden> Thu, 07 Aug 2014 09:41:25 +0200

Changed in fatrace (Ubuntu):
status: Fix Committed → Fix Released
Bug Watch Updater (bug-watch-updater)
Changed in fatrace (Debian):
status: New → Fix Released
Revision history for this message
Martin Pitt (pitti) wrote :

For the record, while this helped a bit it's still not fully functional. See bug 1372873.

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