Re: ASM not discovering disks after workaround for bug 6605620

  • From: TESTAJ3@xxxxxxxxxxxxxx
  • To: sacrophyte@xxxxxxxxx
  • Date: Thu, 19 Mar 2009 14:11:31 -0400

We just went through this, and there is a document on EMC website i think 
about having to start the disk partition beyond the 1M part, some 
performance issue.  I doubt thats it, but what we had to do was make sure 
we did a delete disk and create disk on the "disk partition" name.

joe

_______________________________________
Joe Testa, Oracle Certified Professional 
Senior Consultant
Data Engineering and Administration
Nationwide Investments

(Work) 614-677-1668
(Cell) 614-312-6715

Interested in helping out your marriage?
Ask me about "Weekend to Remember"
Dec 11-13, 2009 here in Columbus.




From:
Charles Schultz <sacrophyte@xxxxxxxxx>
To:
TESTAJ3@xxxxxxxxxxxxxx
Cc:
"oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>, 
oracle-l-bounce@xxxxxxxxxxxxx
Date:
03/19/2009 01:46 PM
Subject:
Re: ASM not discovering disks after workaround for bug 6605620
Sent by:
oracle-l-bounce@xxxxxxxxxxxxx



It is, but thanks for uncovering all the stones. =)

Progression of tasks:
/sbin/powermt config
/etc/init.d/oracleasm createdisk VOLUME5 /dev/emcpoweri 
Marking disk "VOLUME5" as an ASM disk:                     [FAILED]
/usr/sbin/asmtool -C -l /dev/oracleasm -n VOLUME5 -s /dev/emcpoweri -a 
force=yes
asmtool: Device "/dev/emcpoweri" is not a partition
asmtool: Continuing anyway

<urbdb1> /u01/app/oracle/admin/+ASM/bdump: ll /dev/oracleasm/disks/
total 0
drwxr-xr-x  1 root   root        0 Mar 19 11:45 .
drwxr-xr-x  4 root   root        0 Mar  9 02:36 ..
brw-rw----  1 oracle dba  120,  32 Mar  9 02:36 VOLUME1
brw-rw----  1 oracle dba  120,  16 Mar  9 02:36 VOLUME2
brw-rw----  1 oracle dba  120,  48 Mar  9 02:36 VOLUME3
brw-rw----  1 oracle dba  120,  96 Mar  9 02:36 VOLUME4
brw-r-----  1 root   root 120, 128 Mar 19 11:46 VOLUME5


As you can see, VOLUME5 has the wrong permissions. I fixed that - ASM now 
discovers the disks. Woohoo. However, I cannot add it to the diskgroup. I 
am thinking that is a more trivial issue. Thanks again for asking the 
obvious and helping me look again. =)


On Thu, Mar 19, 2009 at 12:16 PM, <TESTAJ3@xxxxxxxxxxxxxx> wrote:

Have you looked to see if its in /dev/oracleasm/disks yet? 

Can I assume you did the oracleasm createdisk to mark it as asm disk(I 
know i'm stating the obvious to you but someone else might benefit) :P 

joe 

_______________________________________
Joe Testa, Oracle Certified Professional 
Senior Consultant
Data Engineering and Administration
Nationwide Investments

(Work) 614-677-1668
(Cell) 614-312-6715

Interested in helping out your marriage?
Ask me about "Weekend to Remember"
Dec 11-13, 2009 here in Columbus.



From: 
Charles Schultz <sacrophyte@xxxxxxxxx> 
To: 
"oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx> 
Date: 
03/19/2009 01:12 PM 
Subject: 
ASM not discovering disks after workaround for bug 6605620 
Sent by: 
oracle-l-bounce@xxxxxxxxxxxxx





Today is our lucky day. =) 

We attempted to add a new LUN to our 11.1.0.7 ASM, only to find that ASM 
no longer talks "properly" to our version of EMC. I am a bit miffed that 
Oracle thinks the problem is with EMC and has dismissed the bug from 2007. 
But, that aside. We forced the disk to be added with asmtool, however ASM 
does not discover the new disk. There are no relevant error messages in 
the alert.log. So... how do we add this disk to a diskgroup? The disk is 
named using the exact same formats that 4 pre-existing disks have (and 
which are in active use by ASM), and I know it is not an issue with 
asm_diskstring. 

For those who are interested, the SRs are: 
7486153.992 
7486052.992

-- 
Charles Schultz 




-- 
Charles Schultz
Sent from: Champaign Illinois United States. 

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