Re: Raw device mappings of multipath disks in RHEL5.4

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Hi,

If the mapper device have been created suceesfully then you may try to map
the raw devices on rc script (rc.local)

This worked for me. My rc.local looks like;


MAKEDEV raw

sleep 2

raw /dev/raw/raw1 /dev/mapper/mpath1p1
Hope this helps.


Regards,

Raj

On Tue, Jan 25, 2011 at 10:17 PM, Matty Sarro <msarro@xxxxxxxxx> wrote:

> Hey everyone. I am trying to run Oracle ORION, which requires that we
> provide raw disk mappings for it to run. This is to perform a SAN
> evaluation.
> I have created /dev/raw/.
> I have edited the /etc/udev/rules.d/60-raw.rules file trying the
> following configurations:
>
> ACTION=="add", KERNEL="/dev/mpath/mpath0",RUN+="/bin/raw /dev/raw/raw0 %N"
> ACTION=="add", KERNEL="/dev/mpath/mpath1",RUN+="/bin/raw /dev/raw/raw1 %N"
> ACTION=="add", KERNEL="/dev/mpath/mpath2",RUN+="/bin/raw /dev/raw/raw2 %N"
>
> ACTION=="add", KERNEL="/dev/mapper/mpath0",RUN+="/bin/raw /dev/raw/raw0 %N"
> ACTION=="add", KERNEL="/dev/mapper/mpath1",RUN+="/bin/raw /dev/raw/raw1 %N"
> ACTION=="add", KERNEL="/dev/mapper/mpath2",RUN+="/bin/raw /dev/raw/raw2 %N"
>
> ACTION=="add", KERNEL="/dev/dm-0",RUN+="/bin/raw /dev/raw/raw0 %N"
> ACTION=="add", KERNEL="/dev/dm-1",RUN+="/bin/raw /dev/raw/raw1 %N"
> ACTION=="add", KERNEL="/dev/dm-2",RUN+="/bin/raw /dev/raw/raw2 %N"
>
> None of them work. After adding them, I run /sbin/start_udev.
> Running raw -qa displays nothing.
>
> Has anyone tried this? Any advice? I've managed to get ORION running
> in a handicapped fashion but it dies after the first volley of tests.
> Still some usable data, but it can't do any of the large writes.
>
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