Re: RAC -- RAW Device Multipath (Shared Storage)

I sent this to Rama earlier, but wanted to include the list:

We had similar issues on different hardware. ASMLib is looking for the first shared path in your mpath, which is not what you want. I suggest putting the EXCLUDE line in oracleasm as follows:

<urbdbbcp2> /u01/app/oracle: cat /etc/sysconfig/oracleasm

#
# This is a configuration file for automatic loading of the Oracle
# Automatic Storage Management library kernel driver.  It is generated
# By running /etc/init.d/oracleasm configure.  Please use that method
# to modify this file
#

# ORACLEASM_ENABELED: 'true' means to load the driver on boot. ORACLEASM_ENABLED=true

# ORACLEASM_UID: Default user owning the /dev/oracleasm mount point. ORACLEASM_UID=oracle

# ORACLEASM_GID: Default group owning the /dev/oracleasm mount point. ORACLEASM_GID=dba

# ORACLEASM_SCANBOOT: 'true' means fix disk perms on boot ORACLEASM_SCANBOOT=true

# ORACLEASM_CLEARBOOT: 'true' means clean old disk perms on boot ORACLEASM_CLEARBOOT=true

# ORACLEASM_SCANORDER: Matching patterns to order disk scanning ORACLEASM_SCANORDER= # ORACLEASM_SCANEXCLUDE: Matching patterns to exclude disks from scan ORACLEASM_SCANEXCLUDE=sd

  We are planning to setup RAC with two node on Redhat Linux. We want to use
> > RAW devices with multipath using Hitachi 9970. We could see shared storage
> > from both the nodes. Cluster Verify fails with following error message.
> >
> >
> >
> > [oracle_at_soadbstg01 cluvfy]$ ./runcluvfy.sh comp ssa -n
> > soadbstg01,soadbstg02
> >
> > Verifying shared storage accessibility
> >
> > Checking shared storage accessibility...
> >
> > WARNING:
> > Unable to determine the sharedness of /dev/sda on nodes:
> > soadbstg02,soadbstg01
> >
> > Shared storage check failed on nodes "soadbstg02,soadbstg01".
> > Oracle (cvuqdisk) is looking for /dev/sd* location. RAW Partitions are
> > configured as /dev/oracleocr. Is there a way to bypass default location?
> >
> > /usr/sbin/cvuqdisk seems to look for /dev/sd*
> > trying to pass /dev/oracleocr/ocr01 doesn't seem to work.
> > Is there a way to pass an alternate device path?
> >
> >
> >
> > Thanks,
> >
> > Rama
> >
> >
> >
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> >
> On 8/29/07, rama.ari_at_accenture.com <rama.ari_at_accenture.com> wrote:
>

-- 
Charles Schultz

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