Fwd: [Linux-cluster] GFS and Oracle Clusterware

[shak]

Today you will need to continue to use non-LVM2 RAW devices 
for Oracle 10G as the CRS voting disks,  until we can  work will Oracle 
to relax
their configuration requirements.

So, here is why CRS won't support ocr/vote files on LVM2 volumes.

When you map the volume to a raw device (so it is character special and not
block special), this should be the way to go:

Assigning devices:           /dev/raw/raw1  -->   /dev/mapper/redo1-logs1
/dev/raw/raw1:  bound to major 253, minor 4
          /dev/raw/raw2  -->   /dev/mapper/redo2-logs2
/dev/raw/raw2:  bound to major 253, minor 5

#/dev/raw$ file *
raw1: character special (162/1)
raw2: character special (162/2)

However, when I run hdparm:
#/dev/raw$ hdparm /dev/raw/raw1

/dev/raw/raw1:
HDIO_GET_MULTCOUNT failed: Inappropriate ioctl for device
readonly     =  0 (off)
readahead    = 256 (on)
HDIO_GETGEO failed: Inappropriate ioctl for device

The geometry call craps out on the inode.  This is why CRS fails. It has to
behave exactly like a raw device in order slip past the OCR ioctl() calls.

Rerunning CRS OUI:
w/  /dev/raw/raw1 for OCR (woo hoo)
w/  /dev/raw/raw2 for VOTE (woo hoo reprise)

Shak
w/ help from Jeff Needham

Jonathan E Brassow wrote:

> You seen this one?  You're the one that knows all things Oracle, right?
>
>  brassow
>
> Begin forwarded message:
>
>> From: "Frazier, Darrell USA CRC (Contractor)" 
>> <Darrell.Frazier at crc.army.mil>
>> Date: January 19, 2006 2:26:22 PM CST
>> To: "'linux clustering'" <linux-cluster at redhat.com>
>> Subject: [Linux-cluster] GFS and Oracle Clusterware
>> Reply-To: linux clustering <linux-cluster at redhat.com>
>>
>>
>> Hello. I'm sorry to post this here but after quite a bit of research, 
>> no one using Oracle can give me an answer I am hoping someone on this 
>> list may have gone through this and give me a pointer. I have a 2 
>> node cluster running RHEL4, RHCS and GFS with shared storage being an 
>> iscsi jbod. Since I am unable to use OCFS2 I was hoping GFS would 
>> provide the cluster filesystem. My problem is this: Oracle 
>> Clusterware installs fine until I need to run the root.sh in which 
>> case I get the following:
>>  
>> [root at opt2 crs]# ./root.sh
>> WARNING: directory '/u02/app/oracle/product/10.2.0' is not owned by root
>> WARNING: directory '/u02/app/oracle/product' is not owned by root
>> WARNING: directory '/u02/app/oracle' is not owned by root
>> WARNING: directory '/u02/app' is not owned by root
>> WARNING: directory '/u02' is not owned by root
>> Checking to see if Oracle CRS stack is already configured
>>  
>> Setting the permissions on OCR backup directory
>> Setting up NS directories
>> PROT-1: Failed to initialize ocrconfig
>> Failed to upgrade Oracle Cluster Registry configuration
>>  
>> The GFS partitions are mounted as so:
>>  
>> mount -O datavolume,nointr -t gfs /dev/vg00/vg00 /u04
>> (mounted this way for the OCR and Voting Disk file directories)
>>  
>> Again, sorry to post this here, I am about at my wits end. Thanx in 
>> advance!
>>  
>> Darrell J. Frazier
>> Unix System Administrator
>> US Army Combat Readiness Center
>> Fort Rucker, Alabama 36362
>> Email: darrell.frazier at crc.army.mil
>>  
>>  
>> -- 
>> Linux-cluster mailing list
>> Linux-cluster at redhat.com
>> https://www.redhat.com/mailman/listinfo/linux-cluster
>
>