[buildd-tools-devel] Bug#619825: Bug#619825: schroot: loopback type maximum file size on 32bit

[Roger Leigh]

On Sun, Mar 27, 2011 at 03:50:32PM +0100, Adam Guthrie wrote:
> Package: schroot
> Version: 1.4.7-1ubuntu0.1
> Severity: normal
> 
> adam at whiteowl:~$ schroot -c natty-i386
> E: /srv/chroot/natty-i386: Failed to stat file: Value too large for defined data type

This is rather odd.  From the stat(2) manual page:

   EOVERFLOW
          (stat())  path refers to a file whose size cannot be represented
          in the type off_t.  This can occur when an application  compiled
          on a 32-bit platform without -D_FILE_OFFSET_BITS=64 calls stat()
          on a file whose size exceeds (2<<31)-1 bits.

So, we don't currently build with -D_FILE_OFFSET_BITS=64 on any
platform.  However, this shouldn't be a problem--the file is nowhere
near the limit, being only a tiny configuration file.

Has the Ubuntu kernel/libc removed the 32 bit interfaces in favour of
the 64 bit ones, rather than supporting both.  Or have you built a
custom kernel/libc without 32 bit interfaces?

If you were to build schroot setting CFLAGS='-D_FILE_OFFSET_BITS=64',
does this fix the problem?  If it does, I'll be happy to do this by
default; however, I'd like to find out exactly why it's failing first.


Regards,
Roger

-- 
  .''`.  Roger Leigh
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