[ANNOUNCE] Filesystem test tools open-sourced by SGI

[Subrata Modak]

Hi Greg,

On Thu, Apr 2, 2009 at 7:58 PM, Greg Banks <gnb at sgi.com> wrote:

> G'day,
>
> SGI is releasing to the Open Source community a number of internal
> SGI testing and debugging tools for NFS.  Some of these tools are
> also applicable to filesystems in general.
>
> These tools are being released under the GNU General Public License
> (GPL) version 2, in the hope that the Linux filesystem development
> community may find them useful.  They are provided as-is, without any
> support.  Please do not contact SGI for support on any of these tools.
>
> Some of these tools are unfinished.  Others rely on build
> infrastructure in internal SGI trees which cannot be released.
> The tools are provided as tarball snapshots of internal SGI source
> control trees; for a number of technical reasons it is not possible
> to provide access to those trees or to create external repositories.
>
> The tools are available for download now at
>
> http://oss.sgi.com/projects/nfs/testtools/


Since, these are released under GPL, i hope integrating them inside LTP (
http://ltp.sf.net) after proper analysis will not be an issue. Since, no
support for these tests will be available from SGI, i am hoping that having
them inside LTP will be beneficial and help these tests to evolve in the
long run.

Regards--
Subrata
(Happens to maintain LTP :-))


>
> A brief description of each tool follows.
>
> Checkstream
> -----------
>
> Simple data corruption testing utilities based on the concept of
> generating a stream of small self-contained records which can be
> decoded in a way which makes certain common data corruption modes
> automatically diagnosable.  Has been useful for automated testing of
> NFS, XFS, and CXFS in SGI.
>
> Weber
> -----
>
> Test load generator for NFS.  Uses multiple threads, multiple sockets
> and multiple IP addresses to simulate loads from many machines,
> thus enabling testing of NFS server setups with larger client counts
> than can be tested with physical infrastructure (or Virtual Machine
> clients).  Has been useful in automated NFS testing and as a pinpoint
> NFS load generator tool for performance development.
>
> NFS PMDA
> --------
>
> PCP Data Agent for extended NFS server statistics.  Exports to PCP
> the new statistics (measuring per-client and per-server performance)
> which are provided by SGI's EnhancedNFS kernel patches.
>
> Samba PMDA
> ----------
>
> PCP Data Agent for extended Samba server statistics.  Exports to
> PCP the additional statistics (measuring per-client and per-server
> performance) which are provided by SGI's patches to Samba.
>
> Ddnfs
> -----
>
> Filesystem load generation program designed to simulate the IO
> load placed on an XFS filesystem by the NFS server in response
> to certain NFS loads.  Intended for use in XFS automated testing,
> to test performance and correctness of certain XFS functionality
> not otherwise exercised by the existing XFS test suite, but never
> integrated into XFSQA.
>
> Pmapload
> --------
>
> Test suite for the portmap and rpcbind programs (which are
> NFS infrastructure components based on code open-sourced by Sun
> Microsystems and used by every Unix and Linux).  Developed by SGI to
> test changes imported into those programs from newer Sun source code
> during the NFS on IPv6 work for Irix several years ago.
>
> RPC Exerciser
> -------------
>
> Test suite for the userspace RPC infrastructure libraries, (which
> are NFS infrastructure components based on code open-sourced by Sun
> Microsystems and used by every Unix and Linux).  Developed by SGI to
> test changes imported into those libraries from newer Sun source code
> during the NFS on IPv6 work for Irix several years ago.
>
> Testfs
> ------
>
> Linux kernel module which provides an in-memory filesystem which
> forgets all data written to it.  Also can be configured to simulate
> timing behaviour on reads and writes.  This is useful for NFS
> performance testing without a fast disk subsystem.
>
> StReplay
> --------
>
> Program which reads the system call trace of another program (obtained
> using the widely available strace utility) and replays the IO pattern.
> This was intended to be used for automated NFS and XFS testing and
> for NFS and XFS problem diagnosis, but was never completed as the
> author transferred to another team.  Could be the basis for a very
> useful filesystem test tool.
>
>
> --
> Greg Banks, P.Engineer, SGI Australian Software Group.
> the brightly coloured sporks of revolution.
> I don't speak for SGI.
>
> --
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-- 
Regards & Thanks--
Subrata
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