ASM cannot find the raw devices nor ASM drives

Hi,
We are trying to use ASM on linux. The kernel version is
2.6.9-42.0.10.0.1.ELsmp x86_64.
We tried both raw devices and ASM drives. But after all the tries, the installer simply will not list the disks.
Anybody can help? Thanks.

"I had installed ASM initially on the same CRS, but due to some error during the installation"
This statement means: I had installed ASM on the clusterware, but due to time synchronization error, it didn't got copied on to the 2nd node, and hence I had to uninstall the ASM software.
But the clusterware is still up and running.
Amit.

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BIOS-GPT grub cannot find the root device in LVM setup

Greetings Arch Linux Community,
Recently I started my journey of installing Arch Linux on my VMware Workstation.
I successfully installed the non-LVM instance not long before I noticed the advantages of LVM, then I just started a new Arch Linux setup with LVM.
However, after following the Beginners' Guide and LVM Guide carefully, I ran into a problem on boot that I cannot solve by myself due to my poor knowledge on boot/grub.
Here is the error message:
ERROR: device '4b28d500-8ed3-4fe5-ad26-97fbb01f979b' not found. Skipping fsck
ERROR: Unable to find root device '4b28d500-8ed3-4fe5-ad26-97fbb01f979b'
The error message itself is pretty clear; saying that the root device specified by my grub.cfg cannot be found and thus cannot be loaded.
However, I'm 100% sure that the device is actually there and just for some reason grub cannot see it.
Below please see the info from lsblk, pvdisplay, vgdisplay, lvdisplay, and some related info from fstab, grub.cfg and mkinitcpio.conf:
root@archiso / # lsblk -f
NAME FSTYPE LABEL UUID MOUNTPOINT
fd0
sda
├─sda1
├─sda2 swap a576bed1-929a-4ea5-b771-6b2e3b2e3808
├─sda3 ext4 659e5bcf-b34b-4083-b8e5-e336fdd20c3d /mnt/boot
└─sda4 LVM2_member GNznA5-fwUh-Gw6D-JvY4-rZKJ-d6fP-TIyoRZ
├─VolGroup00-lvroot ext4 4b28d500-8ed3-4fe5-ad26-97fbb01f979b /mnt
└─VolGroup00-lvhome ext4 dc1f1322-8d8e-4456-b61d-95966ae4e25d /mnt/home
sr0 iso9660 ARCH_201405 2014-05-01-05-20-54-00 /run/archiso/bootmnt
loop0 squashfs /run/archiso/sfs/root-image
loop1 ext4 f07bfb26-3377-487a-a022-efd840614a0d
└─arch_root-image ext4 f07bfb26-3377-487a-a022-efd840614a0d /
loop2 ext4 f07bfb26-3377-487a-a022-efd840614a0d
└─arch_root-image ext4 f07bfb26-3377-487a-a022-efd840614a0d /
root@archiso / # pvdisplay
--- Physical volume ---
PV Name /dev/sda4
VG Name VolGroup00
PV Size 8.50 GiB / not usable 2.98 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 2175
Free PE 0
Allocated PE 2175
PV UUID GNznA5-fwUh-Gw6D-JvY4-rZKJ-d6fP-TIyoRZ
root@archiso / # vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 8.50 GiB
PE Size 4.00 MiB
Total PE 2175
Alloc PE / Size 2175 / 8.50 GiB
Free PE / Size 0 / 0
VG UUID x8VegQ-OKr6-kNNk-HwHe-xxi1-Ecdt-W9Ydj2
root@archiso / # lvdisplay
--- Logical volume ---
LV Path /dev/VolGroup00/lvroot
LV Name lvroot
VG Name VolGroup00
LV UUID q8LxrZ-PXmf-K2Sl-7SNl-DlsF-IZ3s-2m2eHw
LV Write Access read/write
LV Creation host, time archiso, 2014-05-17 16:24:23 +0000
LV Status available
# open 1
LV Size 5.00 GiB
Current LE 1280
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:1
--- Logical volume ---
LV Path /dev/VolGroup00/lvhome
LV Name lvhome
VG Name VolGroup00
LV UUID 3q32Nf-CRZz-iYpB-5317-075y-ulj3-uurdwE
LV Write Access read/write
LV Creation host, time archiso, 2014-05-17 16:24:49 +0000
LV Status available
# open 1
LV Size 3.50 GiB
Current LE 895
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:2
root@archiso / # cat /mnt/etc/fstab
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
# /dev/mapper/VolGroup00-lvroot
UUID=4b28d500-8ed3-4fe5-ad26-97fbb01f979b / ext4 rw,relatime,data=ordered 0 1
# /dev/mapper/VolGroup00-lvhome
UUID=dc1f1322-8d8e-4456-b61d-95966ae4e25d /home ext4 rw,relatime,data=ordered 0 2
# /dev/sda3
UUID=659e5bcf-b34b-4083-b8e5-e336fdd20c3d /boot ext4 rw,relatime,data=ordered 0 2
# /dev/sda2
UUID=a576bed1-929a-4ea5-b771-6b2e3b2e3808 none swap defaults 0 0
root@archiso / # cat /mnt/boot/grub/grub.cfg | grep "root"
set root='lvmid/x8VegQ-OKr6-kNNk-HwHe-xxi1-Ecdt-W9Ydj2/q8LxrZ-PXmf-K2Sl-7SNl-DlsF-IZ3s-2m2eHw'
search --no-floppy --fs-uuid --set=root --hint='lvmid/x8VegQ-OKr6-kNNk-HwHe-xxi1-Ecdt-W9Ydj2/q8LxrZ-PXmf-K2Sl-7SNl-DlsF-IZ3s-2m2eHw' 4b28d500-8ed3-4fe5-ad26-97fbb01f979b
search --no-floppy --fs-uuid --set=root 4b28d500-8ed3-4fe5-ad26-97fbb01f979b
set root='hd0,gpt3'
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt3 --hint-efi=hd0,gpt3 --hint-baremetal=ahci0,gpt3 659e5bcf-b34b-4083-b8e5-e336fdd20c3d
search --no-floppy --fs-uuid --set=root 659e5bcf-b34b-4083-b8e5-e336fdd20c3d
linux /vmlinuz-linux root=UUID=4b28d500-8ed3-4fe5-ad26-97fbb01f979b rw quiet
set root='hd0,gpt3'
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt3 --hint-efi=hd0,gpt3 --hint-baremetal=ahci0,gpt3 659e5bcf-b34b-4083-b8e5-e336fdd20c3d
search --no-floppy --fs-uuid --set=root 659e5bcf-b34b-4083-b8e5-e336fdd20c3d
linux /vmlinuz-linux root=UUID=4b28d500-8ed3-4fe5-ad26-97fbb01f979b rw quiet
set root='hd0,gpt3'
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt3 --hint-efi=hd0,gpt3 --hint-baremetal=ahci0,gpt3 659e5bcf-b34b-4083-b8e5-e336fdd20c3d
search --no-floppy --fs-uuid --set=root 659e5bcf-b34b-4083-b8e5-e336fdd20c3d
linux /vmlinuz-linux root=UUID=4b28d500-8ed3-4fe5-ad26-97fbb01f979b rw quiet
root@archiso / # cat /mnt/etc/mkinitcpio.conf| grep "HOOKS"
# HOOKS
# This is the most important setting in this file. The HOOKS control the
# order in which HOOKS are added. Run 'mkinitcpio -H <hook name>' for
# HOOKS="base"
# HOOKS="base udev autodetect block filesystems"
# HOOKS="base udev block filesystems"
# HOOKS="base udev block mdadm encrypt filesystems"
# HOOKS="base udev block lvm2 filesystems"
HOOKS="base udev autodetect modconf block lvm2 filesystems keyboard fsck"
Last edited by garrio (2014-05-18 00:42:36)

Efka wrote:when i was installing Arch, i installed grub on /dev/sda and my sda (gpt )was - sda1 (ext4)for / and sda2(ext4) for /home so when grub is installed it is installed into SDA ( or im wrong? ) but not into sda1 or sda2, but when i was doing my install i didnt made /boot ext4 partition (sda3 ext4 659e5bcf-b34b-4083-b8e5-e336fdd20c3d /mnt/boot) . i think u trying to mount grub into ext4 partition. is this right ? if yes... is it how it suposed to be ?
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Is database using File system, RAW devices or ASM?

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user12033597 wrote:
I think for ASM, we can tell by querying the V$DATAFILE view if it has ' DATA ' or something like that (a name that has ' ' prefixed to it). Is this the only way? How about other sotrage types (RAW and Filesystem)?V$DATAFILE or DBA_DATA_FILE
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ASM cannot find the raw devices nor ASM drives

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