FAQ
Hi

We Lost the rawdevice mapping file
/etc/sysconfig/rawdevices.

we do not have OS backup
ASM is unable to mount diskgroups

Is it possible to get the device mappings back

regards
Hrishy

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  • Luca Canali at Jan 22, 2008 at 3:39 pm
    You should be able to recover easily from this, provided you haven't
    damaged your disks. The name of the rawdevices (and/or the mapping block
    device to raw device) is not important for ASM which keeps track of the
    necessary information within disk headers and other structures allocated
    in the disks themselves. So if you just make ALL the required storage
    visible to ASM in any order that should be good enough.
    BTW, you don't need to use rawdevices with 10.2 (on RHEL4 or higher),
    block devices are OK for ASM (tested).

    Cheers,
    L.

    PS: if are using RAC you would need to restore the OCR and voting disk
    rawdevices with the correct names though.

    -----Original Message-----
    From: oracle-l-bounce_at_freelists.org
    On Behalf Of hrishy
    Sent: Tuesday, January 22, 2008 3:32 PM
    To: oracle-l_at_freelists.org
    Subject: Lost the rawdevice mapping

    Hi

    We Lost the rawdevice mapping file
    /etc/sysconfig/rawdevices.

    we do not have OS backup
    ASM is unable to mount diskgroups

    Is it possible to get the device mappings back

    regards
    Hrishy

    Support the World Aids Awareness campaign this month with Yahoo! For
    Good http://uk.promotions.yahoo.com/forgood/
    --
    http://www.freelists.org/webpage/oracle-l

    --
    http://www.freelists.org/webpage/oracle-l
  • Hrishy at Jan 22, 2008 at 4:52 pm
    Hi

    Thanks a lot for answering my question.

    I need to use asmlib and mount it to ASM so they can
    use block devices i guess.

    Just wundering why doesnt oracle provide asmlib on
    other platforms like solaris and aix

    regards
    Hrishy

    Luca Canali wrote:
    You should be able to recover easily from this,
    provided you haven't
    damaged your disks. The name of the rawdevices
    (and/or the mapping block
    device to raw device) is not important for ASM which
    keeps track of the
    necessary information within disk headers and other
    structures allocated
    in the disks themselves. So if you just make ALL the
    required storage
    visible to ASM in any order that should be good
    enough.
    BTW, you don't need to use rawdevices with 10.2 (on
    RHEL4 or higher),
    block devices are OK for ASM (tested).

    Cheers,
    L.

    PS: if are using RAC you would need to restore the
    OCR and voting disk
    rawdevices with the correct names though.

    -----Original Message-----
    From: oracle-l-bounce_at_freelists.org
    On Behalf Of
    hrishy
    Sent: Tuesday, January 22, 2008 3:32 PM
    To: oracle-l_at_freelists.org
    Subject: Lost the rawdevice mapping

    Hi

    We Lost the rawdevice mapping file
    /etc/sysconfig/rawdevices.

    we do not have OS backup
    ASM is unable to mount diskgroups

    Is it possible to get the device mappings back

    regards
    Hrishy



    Support the World Aids Awareness campaign this month
    with Yahoo! For
    Good http://uk.promotions.yahoo.com/forgood/
    --
    http://www.freelists.org/webpage/oracle-l

    Support the World Aids Awareness campaign this month with Yahoo! For Good http://uk.promotions.yahoo.com/forgood/

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postedJan 22, '08 at 2:32p
activeJan 22, '08 at 4:52p
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