Well, I configured multipath and udev like note 357472.1 recommends, but still I can't see dm devices or disk/by-name or mapper devices from ASM configuration screen.
udev.permissions:
dm-*:root:disk:0660
disk/by-name/asm*:root:disk:0660
ls -l /dev/dm-*
brw-rw---- 1 root disk 253, 0 Jan 11 19:14 /dev/dm-0
brw-rw---- 1 root disk 253, 1 Jan 11 19:14 /dev/dm-1
brw-rw---- 1 root disk 253, 10 Jan 11 19:14 /dev/dm-10
brw-rw---- 1 root disk 253, 11 Jan 11 19:14 /dev/dm-11
brw-rw---- 1 root disk 253, 12 Jan 11 19:14 /dev/dm-12
brw-rw---- 1 root disk 253, 13 Jan 11 19:14 /dev/dm-13
brw-rw---- 1 root disk 253, 14 Jan 11 19:14 /dev/dm-14
brw-rw---- 1 root disk 253, 2 Jan 11 19:14 /dev/dm-2
brw-rw---- 1 root disk 253, 3 Jan 11 19:14 /dev/dm-3
brw-rw---- 1 root disk 253, 4 Jan 11 19:14 /dev/dm-4
brw-rw---- 1 root disk 253, 5 Jan 11 19:14 /dev/dm-5
brw-rw---- 1 root disk 253, 6 Jan 11 19:14 /dev/dm-6
brw-rw---- 1 root disk 253, 7 Jan 11 19:14 /dev/dm-7
brw-rw---- 1 root disk 253, 8 Jan 11 19:14 /dev/dm-8
brw-rw---- 1 root disk 253, 9 Jan 11 19:14 /dev/dm-9
ls -l /dev/disk/by-name
lrwxrwxrwx 1 root disk 10 Jan 11 19:14 asmgoma1b -> ../../dm-2
lrwxrwxrwx 1 root disk 10 Jan 11 19:14 asmgoma2b -> ../../dm-1
lrwxrwxrwx 1 root disk 10 Jan 11 19:14 asmmama1a -> ../../dm-7
lrwxrwxrwx 1 root disk 10 Jan 11 19:14 asmmama1b -> ../../dm-8
lrwxrwxrwx 1 root disk 10 Jan 11 19:14 asmmama2a -> ../../dm-5
lrwxrwxrwx 1 root disk 10 Jan 11 19:14 asmmama2b -> ../../dm-6
lrwxrwxrwx 1 root disk 10 Jan 11 19:14 asmmama3a -> ../../dm-9
lrwxrwxrwx 1 root disk 11 Jan 11 19:14 asmmama3b -> ../../dm-10
lrwxrwxrwx 1 root disk 10 Jan 11 19:14 asmteam1b -> ../../dm-0
lrwxrwxrwx 1 root disk 11 Jan 11 19:14 asmteam2b -> ../../dm-14
lrwxrwxrwx 1 root disk 11 Jan 11 19:14 asmteam3b -> ../../dm-11
lrwxrwxrwx 1 root disk 11 Jan 11 19:14 dm-12 -> ../../dm-12
lrwxrwxrwx 1 root disk 11 Jan 11 19:14 dm-13 -> ../../dm-13
lrwxrwxrwx 1 root disk 10 Jan 11 19:14 dm-3 -> ../../dm-3
lrwxrwxrwx 1 root disk 10 Jan 11 19:14 flashrec -> ../../dm-4
ls -l /dev/mapper
brw-rw---- 1 root disk 253, 2 Jan 11 19:14 asmgoma1b
brw-rw---- 1 root disk 253, 1 Jan 11 19:14 asmgoma2b
brw-rw---- 1 root disk 253, 7 Jan 11 19:14 asmmama1a
brw-rw---- 1 root disk 253, 8 Jan 11 19:14 asmmama1b
brw-rw---- 1 root disk 253, 5 Jan 11 19:14 asmmama2a
brw-rw---- 1 root disk 253, 6 Jan 11 19:14 asmmama2b
brw-rw---- 1 root disk 253, 9 Jan 11 19:14 asmmama3a
brw-rw---- 1 root disk 253, 10 Jan 11 19:14 asmmama3b
brw-rw---- 1 root disk 253, 0 Jan 11 19:14 asmteam1b
brw-rw---- 1 root disk 253, 14 Jan 11 19:14 asmteam2b
brw-rw---- 1 root disk 253, 11 Jan 11 19:14 asmteam3b
lrwxrwxrwx 1 root disk 16 Jan 11 19:14 control -> ../device-mapper
brw-rw---- 1 root disk 253, 12 Jan 11 19:14 dm-12
brw-rw---- 1 root disk 253, 13 Jan 11 19:14 dm-13
brw-rw---- 1 root disk 253, 3 Jan 11 19:14 dm-3
brw-rw---- 1 root disk 253, 4 Jan 11 19:14 flashrec
(asmxxxxxx are devices for ASM)
Group and permissions set by hand because udev.permissions (I had to create it) seems not to function properly.
Is there anything wrong or missing?
________________________________
Jorge López Díaz
Técnico de Gestión Informática
Consejería de Sanidad
-----Mensaje original-----
De: LOPEZ DIAZ, JORGE
Enviado el: jueves, 11 de enero de 2007 18:54
Para: suse-oracle@(protected)
Asunto: RE: [suse-oracle] ASM and Mutilpath
Hello Michael,
I've been reading note Metalink Note 357472.1 (thanks Clemens), so I wil configure udev, multipath, etc. according it. The idea is not to use raw devices, except for voting disk and OCR. If this is not possible at all, I will configure raw devices like you made it.
I'll let know you, and every body, how this results.
De: Michael Kershaw [mailto:mike.kershaw@(protected)]
Enviado el: jueves, 11 de enero de 2007 18:09
Para: LOPEZ DIAZ, JORGE
Asunto: Re: [suse-oracle] ASM and Mutilpath
Hey Jorge,
We've built two (18) node Sles9 clusters running 10g w/ ASM using Hitachi Lightning fiber disk utilizing the multipath-tools package, and everything is running pretty smoothely minus that of the buggy ASM that is being worked on closely with Oracle. The way we have it configured, is the fiber disks are presented down two separate fiber channels, I take the UID of the luns, put them in a /etc/multipath.conf file, alias them to whichever device they will be used for(ie. raw104), and when the devices get aliased, the aliases reside in /dev/mapper/. From there, I've created the /etc/raw file, and bind the raw device names to the /dev/mapper/alias (ie. "raw104:mapper/raw99p1"). Once that file was created, I modified /etc/udev/udev.permissions with all of my raw devices, and what permissions i want them set to on creation/binding of the raw devices, and then run /etc/init.d/raw start. Once that's all performed, ASM see's the devices as /dev/raw/raw104 as a single device, and is able to import it.
Let me know if this information helps you at all, or even if you'd like to ask any questions to get you moving.
Good Luck!!
Mike Kershaw
On 1/11/07, LOPEZ DIAZ, JORGE wrote:
Hello every one,
I'm trying to setup ASM in a two nodes RAC cluster 10.2 over SLES10. I want to use multipath (with a EMC SAN CX500). Multipath is running ok, as I can see all LUN's defined. But from runInstaller, I can´t see any of the devices /dev/dm-xx than multipath has generated. I change definition of path to "/dev/dm-*" and "/dev/disk/by-name/*" with no results. It's supossed that raw devices are not necessary.
So, I defined in /etc/raw 12 equivalences to dm-xx devices, but after restart servers only 9 raw names appears in /dev/raw, and from runInstaller, only 6 of them appears as candidates with path "/dev/raw/*". For SLES, all dm-xx devices are availables.
No one of this devices has partitions defined.
Any suggestion?
This time are real servers, not vmware, for migrate a 9.2 RAC database to these new servers.
Any suggestion?
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