[Oracleasm-users] RHAT 4 update 2 multipath

[Joel Becker]

On Fri, Oct 21, 2005 at 05:07:37PM -0400, Rodionov, Sergey wrote:
> [root at hacksaw mapper]# asmtool -l /dev/oracleasm -C -n REP1 -s
> /dev/mapper/360a9800056716a37473430716c465849p3
> asmtool: Device "/dev/mapper/360a9800056716a37473430716c465849p3" is not a
> partition
>  I have created trace file :
>  strace -f -o /tmp/log asmtool -l /dev/oracleasm -C -n REP1 -s
> /dev/mapper/360a9800056716a37473430716c465849p

	Yes, dm does not provide HDIO_GETGEO, so I cannot determine that
the device is, indeed, a partition.  I'm working on a solution.
	The workaround is to label the member disk (/dev/sdXN) and then
restart ASMLib.  ASMLib will happily discover existing devices, it only
errors when trying to _create_ an unpartitioned device.
	See also http://otn.oracle.com/tech/linux/asmlib/multipath.html
for tips on making sure ASMLib sees your multipath device first.

Joel

-- 

"For every complex problem there exists a solution that is brief,
     concise, and totally wrong."
                                        -Unknown

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127