5.1.4.1 Storage Configuration for Management Domain

The management domain (dom0) contains the image repository and Oracle VM configuration files.

The management domain contains the following directories:

• /EXAVMIMAGES, where the images used to create the guests are stored. The ZIP files in this directory contain the ISO files.
• /conf
• /GuestImages, where the files representing each user domain are stored.

The management domain exists on the physical disk /dev/sda. There are three disk partitions:

• /dev/sda1 — Mounted as /boot.
• /dev/sda2 — Used for swap.
• /dev/sda3 — Used for the volume group VGExaDb.

The logical volumes created for the management domain are:

• /dev/VGExaDb/LVDbSys2 — Used by dbnodeupdate.sh while performing a backup
• /dev/VGExaDb/LVDbSys3 — Mounted as /
• /dev/VGExaDb/LVDbSwap1 — Used for swap space
• /dev/VGExaDb/LVDoNotRemoveOrUse — Used by dbnodeupdate.sh while performing a backup
• /dev/VGExaDb/LVDbExaVMImages — Mounted as /EXAVMIMAGES

The /EXAVMIMAGES directory is where the configuration files for each virtual machine are located. The files are named using the format /EXAVMIMAGES/GuestImages/nodename/vm.cfg. Each virtual machine also has image files that point back to the ISO files in the image repository. The following files, except for pv1_vgeexadb.img, are created with reflinks, an OCFS2 feature:

• /EXAVMIMAGES/GuestImages/user-domain-name/System.img
• /EXAVMIMAGES/GuestImages/user-domain-name/gridversion.img
• /EXAVMIMAGES/GuestImages/user-domain-name/dbversion.img