[lustre-discuss] IOR input for pathologic file system abuse

Cory Spitz spitzcor at cray.com
Mon Jun 12 14:50:51 PDT 2017


The worst case would probably involve reading/writing the same file extents across multiple nodes.  You could probably whip up a script using /bin/dd for such a thing.  Or is that too evil for you?



On 6/2/17, 2:32 AM, "lustre-discuss on behalf of Michael Kluge" <lustre-discuss-bounces at lists.lustre.org on behalf of michael.kluge at tu-dresden.de> wrote:

    Hi all,
    I am looking for IOR scripts that represent pathological use cases for file systems. Something like shared file access with a small, unaligned block size or random I/O to a shared file. Does anyone has some input for me there that he/she is willing to share?
    Regards, Michael
    Dr.-Ing. Michael Kluge
    Technische Universität Dresden
    Center for Information Services and
    High Performance Computing (ZIH)
    D-01062 Dresden
    Falkenbrunnen, Room 240
    Phone:  (+49) 351 463-34217
    Fax:    (+49) 351 463-37773
    e-mail: michael.kluge at tu-dresden.de
    WWW:    http://www.tu-dresden.de/zih

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