docs/doc/source/planning/kubernetes/controller-disk-configurations-for-all-in-one-systems.rst
Ron Stone 3143d86b69 Openstack planning
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Signed-off-by: Ron Stone <ronald.stone@windriver.com>
Change-Id: Ibff9af74ab3f2c00958eff0e33c91465f1dab6b4
Signed-off-by: Stone <ronald.stone@windriver.com>
2021-01-25 08:36:47 -05:00

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Controller Disk Configurations for All-in-one Systems

For Simplex and Duplex Systems, the controller disk configuration is highly flexible to support different system requirements for Cinder and nova-local storage.

You can also change the disk configuration after installation to increase the persistent volume claim or container-ephemeral storage.

Table 1. Disk Configurations for Simplex or Duplex systems
No. of Disks Disk BIOS Boot Boot Root Platform File System Volume Group (cgts-vg) Root Disk Unallocated Space Ceph OSD (PVCs) Notes
1 /dev/sda Not supported
2

/dev/sda

/dev/sdb

/dev/sda1 /dev/sda2 /dev/sda3 /dev/sda4 Not allocated Disk

Space left unallocated for future application use

AIO-SX1 (replication = 1); AIO-DX (replication = 2)

2

/dev/sda

/dev/sdb

/dev/sda1 /dev/sda2 /dev/sda3 /dev/sda4 /dev/sda5 (cgts-vg) Disk

Space allocated to cgts-vg to allow filesystem expansion

AIO-SX (replication = 1); AIO-DX (replication = 2)

3

/dev/sda

/dev/sdb

/dev/sdc

/dev/sda1 /dev/sda2 /dev/sda3 /dev/sda4 Not allocated

Disk

Disk

Space left unallocated for future application use

AIO-SX1: (replication = 2); AIO-DX (replication = 2)

AIO-SX1: (replication = 2); AIO-DX (replication = 2)

3

/dev/sda

/dev/sdb

/dev/sdc

/dev/sda1 /dev/sda2 /dev/sda3 /dev/sda4 /dev/sda5 (cgts-vg)

Disk

Disk

Space allocated to cgts-vg to allow filesystem expansion

AIO-SX1: (replication = 2); AIO-DX (replication = 2)

AIO-SX1: (replication = 2); AIO-DX (replication = 2)


  1. -Simplex Ceph replication is disk-based.↩︎