asm - Svetoslav Gyurov technical blog

Introducing Oracle ASM Filter Driver

The Oracle ASMFD (Filter Driver) was introduced in Oracle Database 12.1.0.2 and as of the moment it is available on Linux systems only. Oracle ASM Filter Driver is a kernel module very much like the ASMLIB that resides in the I/O path of the Oracle ASM

10.2

ASM diskgroup unable to mount because of duplicate disk

This is something I would like to share for a long time, but for one or another reason I didn't. The error is nothing special, but then I run into very interesting case. This happen when I had to shutdown one server for maintenance and then boot it again. Once

11.2

Unable to create ASM disk under OEL 6.x

It was busy month and I'm behind with my blog posts. First of all Happy New Year to all of you and wish you all the best through the new year! This is a short note for installing Oracle Database with ASM under Oracle Enterprise Linux 6.x, which is

lvm

Troubleshooting ASM 11.2 disk discovery

I was doing some installation at customer site when they asked if there anything specific to run GI 11.2 on HP-UX as this was their first interaction with 11g. Of course I replied that there is nothing specific, just to make sure the ownership of the raw disk is

11.2

Cannot drop the first disk group in ASM 11.2

I've been using ASM for long time in different configurations, with pfile, with spfile and in some configurations on shared raw device. Playing with ASM 11gR2 (Grid Infrastructure) it happens to me that I cannot neither drop neither dismount the first disk group. The following error can be seen in

crs

Shared disk support for VirtualBox

I'm very happy to announce that VirtualBox now supports shared disks. Finally we can attach one disk to several virtual machines and run Oracle RAC and other clusters. As Oracle promised, this feature is released with the next maintenance patch (thanks!). There is a new image write mode which is

filesystem

Changing physical path of ASM disk group

The purpose of this document is to show that changing the psyhical path of ASM disk MEMBERS is possible and there is no risk. For the purpose of the test, we create one logical volume called lvora and we grant ownership of this file to oracle: root@node1:/# lvcreate -n

lvm

Migration of HP-UX raw devices to Oracle ASM

This is an article which I wrote about how to migrate Oracle datafiles from LVM raw devices to Oracle ASM.