ASM disks creation

[AlpNek]

Hi,
I am following the guide but unable to get ASM disks to show up under /dev/asmdisks. Udev rules are correct. Yet, there is no directory called asmdisks under /dev. I created it manually and setup the symlinks too (i'm sure that's not how it goes though).

Finally, I get this error when configuring grid infrastructure:

[FATAL] [INS-30508] Invalid ASM disks.
   CAUSE: The disks [/dev/asmdisks/asm-clu-121-DATA-disk1, /dev/asmdisks/asm-clu-121-DATA-disk2, /dev/asmdisks/asm-clu-121-DATA-disk3] were not valid.
   ACTION: Please choose or enter valid ASM disks.
[FATAL] [INS-30515] Insufficient space available in the selected disks.
   CAUSE: Insufficient space available in the selected Disks. At least, 5,227 MB of free space is required.
   ACTION: Choose additional disks such that the total size should be at least 5,227 MB.

What steps have I missed/need to execute to get ASM disks working? I have mounted files created with dd on my host to /dev/sd[d-f] using losetup.

Thanks.

[DeltaZN]

Hi, I had the same problem. Try to use another Oracle 12c Grid Infrastructure and Database installation distribution.