Hi, ..... advantages , maybe only just standard ASM advantages. But I am just testing different technologies and making documentation. With AWS is easy to build and destroy :) and why not ? in OVM we also use ASM. What dis advantages this can bring with AWS EC2 instance ? *-----------------* *Tiran* *Best RegardsStay in touch...* On 16 February 2015 at 20:31, Niall Litchfield <niall.litchfield@xxxxxxxxx> wrote: > Can I ask *why* you need to use ASM with an AWS instance? I'm struggling > to see what advantage it would give you over and above a filesystem on the > AWS storage? > > On Mon, Feb 16, 2015 at 5:08 PM, Out <mufc01666@xxxxxxxxx> wrote: > >> Thanks everyone for help. >> >> I am using EC2 AWS cloud instances with RHEL 7 and they are using XEN >> visualization. I am not sure if I can change something outside from OS, >> like I can do for VMware or OVM. >> >> I test a bit with disk names and it seems they I always have same names >> for devises path. So now I removed some options from UDEV conf file and it >> works. >> >> KERNEL=="xvdg", SYMLINK+="oracleasm/asm-data3" OWNER="grid", >> GROUP="asmadmin", MODE="0660" >> >> So I don't have UUID , I don't use UUID. >> Is it good enough or can be some side effects ? >> >> P.S. This is not prod system. >> >> >> >> *-----------------* >> *Tiran* >> *Best Regards* >> *Stay in touch...* >> I did a blog entry on this in August. See if this helps. Also if you are >> using VMware vmdk's I think there is an option to generate SCSI id's. >> >> Find the section in the blog that talks about rhel 7 for the rules: >> >> https://dbakerber.wordpress.com/2014/08/08/udev-rules/ >> >> Sent from my iPhone >> >> On Feb 16, 2015, at 5:59 AM, Ls Cheng <exriscer@xxxxxxxxx> wrote: >> >> looking the device name it looks like the system is a virtualized guest? >> >> AFIAK scsi_id does not return anything for virtual disks >> >> In OVM Guests for example, this is from a RAC running in OVM, what we do >> is in vm.cfg we bind the physical disks to xvd* disk in the guest, for >> example: >> >> disk = >> ['file:/OVS/Repositories/0004fb00000300008efa6174ff36f936/VirtualDisks/0004fb0000120000788e1d3e6843db80.img,xvda,w', >> 'phy:/dev/mapper/3600144f0b681e04e0000523abfa90006,xvdb,w!', >> 'phy:/dev/mapper/3600144f0b681e04e0000523abfbd0007,xvdc,w!', >> 'phy:/dev/mapper/3600144f0b681e04e0000523abfcb0008,xvdd,w!', >> 'phy:/dev/mapper/3600144f0b681e04e0000523ac063000a,xvde,w!', >> 'phy:/dev/mapper/3600144f0b681e04e0000523ac072000b,xvdf,w!', >> 'phy:/dev/mapper/3600144f0b681e04e0000523ac150000c,xvdg,w!', >> 'phy:/dev/mapper/3600144f0b681e04e0000523ac160000d,xvdh,w!'] >> >> and in the guest udev file we have this >> >> KERNEL=="xvdb1", NAME="asm_crsdata01p1" OWNER="grid", GROUP="asmadmin", >> MODE="0660" >> KERNEL=="xvdc1", NAME="asm_crsdata02p1" OWNER="grid", GROUP="asmadmin", >> MODE="0660" >> KERNEL=="xvdd1", NAME="asm_crsdata03p1" OWNER="grid", GROUP="asmadmin", >> MODE="0660" >> KERNEL=="xvde1", NAME="asm_dgdata01_01p1" OWNER="grid", GROUP="asmadmin", >> MODE="0660" >> KERNEL=="xvdf1", NAME="asm_dgdata01_02p1" OWNER="grid", GROUP="asmadmin", >> MODE="0660" >> KERNEL=="xvdg1", NAME="asm_dgfra01_01p1" OWNER="grid", GROUP="asmadmin", >> MODE="0660" >> KERNEL=="xvdh1", NAME="asm_dgfra01_02p1" OWNER="grid", GROUP="asmadmin", >> MODE="0660" >> >> in VMWARE yuo can get guest UUID by setting EnableUUID to TRUE but I dont >> think there is anyway in OVM >> >> You need to ask Amazon what sort of Virtualization they are using >> >> >> Thanks >> >> >> On Mon, Feb 16, 2015 at 12:42 PM, Out <mufc01666@xxxxxxxxx> wrote: >> >>> Hi, >>> >>> Thanks for reply. >>> >>> I tried also what is mentioned on Oracle document which you send me but >>> result is same again no output. >>> >>> /usr/lib/udev/scsi_id --whitelisted --replace-whitespace >>> --device=/dev/xvdj1 >>> >>> ------ >>> When I am running blkid I have some output. >>> >>> blkid >>> /dev/xvda2: UUID="668dbd02-c201-44bc-be76-f606fc9ab8db" TYPE="xfs" >>> PARTUUID="9146b810-9a31-4c10-a206-01b0bbaca807" >>> /dev/xvda3: UUID="4724e874-741e-49a0-8826-58caca0feae7" TYPE="xfs" >>> PARTLABEL="primary" PARTUUID="1229ed73-0343-4233-b2d8-6876162af9c6" >>> /dev/xvdj1: UUID="4b3dd71d-e685-4d1e-9a95-06958dfd4c1f" TYPE="xfs" >>> >>> So I guess that the problem is not from Amazon EC2......? >>> >>> >>> >>> *-----------------* >>> *Tiran* >>> >>> *Best RegardsStay in touch...* >>> >>> On 16 February 2015 at 12:11, Mladen Gogala <dmarc-noreply@xxxxxxxxxxxxx >>> > wrote: >>> >>>> You're doing it wrong. Here is the right way for EL7: >>>> https://docs.oracle.com/cd/E52668_01/E54669/html/ol7-s19-storage.html >>>> >>>> On 02/16/2015 05:43 AM, Out wrote: >>>> >>>> Dear, >>>> >>>> I need to setup ASM. Because I am using RHEL 7 I cannot find >>>> kmod-asm package in repository. I guess is not yet available for RHEL 7 >>>> unlike for RHEL 6.6......???? >>>> >>>> So I am trying to set up UDEV for ASM. My problem is when I need to >>>> get disk id for UDEV rules I get nothing, Command is not returning >>>> anything. >>>> >>>> /usr/lib/udev/scsi_id -g -u -d /dev/xvdj1 >>>> >>>> >>>> My instance is in EC2 in AWS. >>>> >>>> Can this be because this is EC2 instance or I am doing something >>>> wrong. >>>> >>>> Please if someone have experience with this help me. >>>> >>>> Thanks >>>> >>>> *Aleks* >>>>> >>>>> *Best Regards Stay in touch...* >>>>> >>>> >>>> >>>> >>>> -- >>>> Mladen Gogala >>>> Oracle DBAhttp://mgogala.freehostia.com >>>> >>>> >>> >> > > > -- > Niall Litchfield > Oracle DBA > http://www.orawin.info >