raw devices Archives - Running Systems

Attach multiple Oracle ASM snapshots to the same host

Byetzion 12/09/201319/10/2019

The goal – connecting multiple Oracle ASM snapshots (same source LUNs, of course) to the same machine. The next process will demonstrate how to do it. Problem: ASM disks use a disk label called ASMLib to maintain access even when the logical disk path might change (like adding a LUN with a lower ID and…

Persistent raw devices for Oracle RAC with iSCSI

Byetzion 06/12/2008

Using udev to set persistent raw devices for iscsi in Oracle RAC

Clusters | Disk Storage | Linux

Raw devices for Oracle on RedHat (RHEL) 5

Byetzion 21/10/2008

There is a major confusion among DBAs regarding how to setup raw devices for Oracle RAC or Oracle Clusterware. This confusion is caused by the turn RedHat took in how to define raw devices. Raw devices are actually a manifestation of character devices pointing to block devices. Character devices are non-buffered, so they act as…