ASM installation on RHEL 6.4 in Amazon EC2

Question

I thought I'd perform an installation of 12cR1 to do a little testing. So I launched a new instance in Amazon EC2 and picked an AMI for 64-bit RHEL 6.4.
All started smoothly, but I've got stuck preparing a disk for ASM.
My first plan was to install ASMLIB. I see from the documentation that I need kmod-oracleasm (kmod-oracleasm-2.0.6.rh1-2.el6.x86_64.rpm), and that this is in the RHEL supplementary channel.
$ yum repolist all
Loaded plugins: amazon-id, refresh-packagekit, rhui-lb, security
repo id                                            repo name                                                          status
rhel-source                                        Red Hat Enterprise Linux 6Server - x86_64 - Source                 disabled
rhel-source-beta                                   Red Hat Enterprise Linux 6Server Beta - x86_64 - Source            disabled
rhui-REGION-client-config-server-6                 Red Hat Update Infrastructure 2.0 Client Configuration Server 6    enabled:      3
rhui-REGION-rhel-server-releases                   Red Hat Enterprise Linux Server 6 (RPMs)                           enabled: 10,994
rhui-REGION-rhel-server-releases-optional          Red Hat Enterprise Linux Server 6 Optional (RPMs)                  enabled:  6,250
rhui-REGION-rhel-server-releases-optional-source   Red Hat Enterprise Linux Server 6 Optional (SRPMs)                 disabled
rhui-REGION-rhel-server-releases-source            Red Hat Enterprise Linux Server 6 (SRPMs)                          disabled
repolist: 17,247
$ rhn-channel --add --channel=rhel-x86_64-server-supplementary-6
Username:
^C
Does Amazon EC2 provide the RHEL supplementary channel, and if so what credentials do I need to provide? Otherwise I guess I would need my own RHN subscription, which seems expensive for a self-learning instance.
So my second plan was to avoid ASMLIB and implement udev rules.
I created a 64GiB volume and attached it to the instance as /dev/sdh. On the instance it appears as /dev/xvdl:
$ fdisk -l /dev/xvdl
Disk /dev/xvdl: 68.7 GB, 68719476736 bytes
255 heads, 63 sectors/track, 8354 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xf4c9fedb
    Device Boot      Start         End      Blocks   Id  System
/dev/xvdl1               1        8354    67103473+  83  Linux
$ sudo scsi_id -g -u -d /dev/xvdl
$
So scsi_id doesn't return a value to use in the udev rule. I've found references to this which suggest setting disk.EnableUUID. Is this option available in Amazon EC2 at all? Or is there an alternative way of getting a UUID for the disk?
Any help with these questions, or suggestions for alternative solutions, would be much appreciated.
Thanks
Mike

Answer 1

Did you try this command ?
~]# blkid
/dev/vda1: UUID="7fa9c421-0054-4555-b0ca-b470a97a3d84" TYPE="ext4"
/dev/vda2: UUID="7IvYzk-TnnK-oPjf-ipdD-cofz-DXaJ-gPdgBW" TYPE="LVM2_member"
/dev/mapper/vg_kvm-lv_root: UUID="a07b967c-71a0-4925-ab02-aebcad2ae824" TYPE="ext4"
/dev/mapper/vg_kvm-lv_swap: UUID="d7ef54ca-9c41-4de4-ac1b-4193b0c1ddb6" TYPE="swap"
https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s2-sysinfo-filesyste…