The Device Does Not Support Directio

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Using directio to bypass operating system buffer

    http://infocenter.sybase.com/help/topic/com.sybase.infocenter.dc31654.1570/html/sag1/sag1474.htm
    Using directio to bypass operating system buffer. The directio parameter for disk init, disk reinit, and sp_deviceattr allows you to configure Adaptive Server to transfer data directly to disk, bypassing the operating system buffer cache.directio performs I/O in the same manner as raw devices and provides the same performance benefit as raw devices, but has the ease of use and manageability of ...

2044861 - SAP Support Portal Home

    https://apps.support.sap.com/sap/support/knowledge/preview/en/2044861
    About this page This is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP ONE Support launchpad (Login required). Search for additional results. Visit SAP Support Portal's SAP Notes and KBA Search.

directio - narkive

    http://sybase.public.ase.administration.narkive.com/dxpj3ahl/directio
    file in DIRECTIO_ON mode, error: (25) Inappropriate ioctl for device. 01:00000:00013:2009/11/08 13:58:56.45 kernel The device does not support directio. '/sybtmp04/gi_datadsk1.dat' will be activated using dsync instead of directio.

disk init - SAP

    http://infocenter.sybase.com/help/topic/com.sybase.infocenter.dc36272.1572/html/commands/X64061.htm
    If you issue disk init with the directio parameter on a platform on which it is not supported, Adaptive Server issues the message No such parameter: 'directio'. Use disk init for each new database device. Each time disk init is issued, a row is added to master..sysdevices. A new database device does not automatically become part of the pool of ...

Dsync and Directio of Sybase Devices - SAP Q&A

    https://answers.sap.com/questions/11383462/dsync-and-directio-of-sybase-devices.html
    DIRECTIO means that the FS cache is bypassed and the contents are written to disk directly. DIRECTIO provides much better write performance than DSYNC and you always want to make sure you use DIRECTIO for database devices in the file system. For master ASE always uses DSYNC and thats not …

Issue with running FIO with DirectIO on Solaris 11.3 ...

    https://github.com/axboe/fio/issues/136
    Dec 24, 2015 · ZFS doesn't support Direct IO so the issue you are seeing is a file system limitation and not an issue with FIO. Hope that helps.

2038258 - When creating a tempdb device, received the ...

    https://apps.support.sap.com/sap/support/knowledge/preview/en/2038258
    Attempt to set tmpfs file '/sybtmpfs/tempdb2_dat1' to Direct i/o mode failed, error: Inappropriate ioctl for device The device does not support directio. '/sybtmpfs/tempdb2_dat1' will be activated using dsync instead of directio. Initializing virtual device X, '/sybtmpfs/tempdb2_dat1' with dsync 'on'. Virtual device X started using asynchronous ...

Disk Manager Errors (9000s) - SAP ASE - Community Wiki

    https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=369066738
    Mar 15, 2014 · The database has been marked as suspect. 9008 16 Attempt to open device '%.*s' failed. When opening a device which does not support 'directio' with 'dsync' explicitly set to FALSE, 'directio' needs to be explicitly set to FALSE too.

Java NIO "No such device" Exception on linux but works ...

    https://stackoverflow.com/questions/14344799/java-nio-no-such-device-exception-on-linux-but-works-when-using-fileutils
    Java NIO “No such device” Exception on linux but works when using FileUtils. Ask Question Asked 6 ... this exception is thrown when "the underlying file system of the specified file does not support memory-mapping." How are you mounting the filesystem on Linux? ... Also check if the /etc/fstab file does not specify directio for your share ...

c# - UPOS/OPOS DirectIO scanner remote triggering ...

    https://stackoverflow.com/questions/53668643/upos-opos-directio-scanner-remote-triggering-datalogic-heron-hd3430-posfor-net
    How i can trigger a scanner remotely form my application ? the DirectIO commands provided with device does not contain any command could do that and with some search over google i found my device actually supports this kind of commands but i didn't find any find any thing useful. Note 1:i am open to any suggestion could help.



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