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RHEL6: udev and ASM

user12175624Dec 6 2012 — edited Dec 6 2012
Hi,

As I found out, Oracle does not provide the RPM for asmlib any more for RHEL6.

The alternative is udev: you have to write some rules to get persistent names for your devices, i.e.:

KERNEL=="sd*", BUS=="scsi", PROGRAM=="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name",RESULT=="3600c0ff000112a6d0b0ebf5001000000",NAME+="oracleasm/disks/OCR1", OWNER="grid" GROUP="asmadmin" MODE="0660"

After the first tests I have some questions:

* using udev rules with the "NAME+=" option, the device is renamed. For example, /dev/sdc is not available any more if there is a rule that applies for this device. A bit strange, because in /proc/partition it is still listed. Is there a way to have both? The original device (/dev/sdc) and the "newly created" device (for example /dev/oracleasm/disks/OCR1)? I know that you can use SYMLINK but is this supported/recommended?

* is it recommended to use partitions here? If so, udev does not seem to map / rename partitions but devices only...

Any feedback is appreciated,

Werner

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Locked on Jan 3 2013
Added on Dec 6 2012
#generic-linux, #linux
3 comments
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