On Thu, Jan 05, 2006 at 04:44:51PM -0500, Justin Mazzola Paluska wrote:
> Hello,
> 
> I'm trying to debug some problems I've been having with FreeBSD's fsx
> utility on our test PVFS2 cluster.  I ask because I'm trying to track
> down some file corruption issues with PVFS and Samba--and the Samba
> people suggested that I try running fs tests like fsx.
> 
> We're running PVFS2 1.3.2.  I'm using the version of fsx that I've
> pulled from
> <http://www.freebsd.org/cgi/cvsweb.cgi/src/tools/regression/fsx/>.
> Looking at the test code PVFS2's CVS , it looks like the way that I
> should call fsx is:
> 
>   ./fsx -N 1000 -W -R ${PVFS2_MOUNTPOINT}/fsx_testfile
> 
> However, this fails with the error:
> 
>   no extend on truncate! not posix!

Hi justin

well it's too bad there is no official upstream fsx source.  We use
the one from http://www.codemonkey.org.uk/cruft/fsx-linux.c and so far
have not seen this 'no extend on truncate' message.

> As a side note, the samba people also suggested running one of their
> home-grown tests <http://samba.org/ftp/unpacked/junkcode/fstest.c>.
> Their test fails with random data corruption.

Thanks for the pointer.  I'll add it to the nightly tests.  

==rob

-- 
Rob Latham
Mathematics and Computer Science Division    A215 0178 EA2D B059 8CDF
Argonne National Labs, IL USA                B29D F333 664A 4280 315B
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