Difference between revisions of "Agile testbed"

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== Storage ==
 
== Storage ==
  
The storage options to use by the virtual machines are a trade-off between performance and flexibility. Shared storage options offer the benefit of live migration, but only the Fibre Channel hardware can combine this with high speeds.
+
The hypervisors of the testbed all connect to the same shared storage backend (known as The Compellent). Some of the nodes through Fibre Channel, the others who don't have that use iSCSI.
 +
The Compellent exports two sizable pools to the testbed (and more can be created if needed). These are formatted as LVM groups and shared through a clustered LVM setup.
 +
 
 +
In libvirt, these VGs are known as 'pools' under the names <code>vmachines</code> and <code>vmachines2</code>.
 +
 
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The older machine with 2TB of disk storage called 'put' is being decommissioned. Remaining VM images will be migrated away.
  
 
{| class="wikitable"
 
{| class="wikitable"
! || local disk || Fibre Channel || iSCSI to put || NFS to put
+
!   || Fibre Channel || iSCSI
|-
 
! pool name
 
| * || vmachines || vmachines || put.testbed
 
|-
 
! performance
 
|style="background-color: #ffc;"| fair
 
|style="background-color: #cfc;"| high
 
|style="background-color: #fcc;"| lower
 
|style="background-color: #fcc;"| lower
 
 
|-
 
|-
! capacity
 
|style="background-color: #ffc;"| limited
 
|style="background-color: #cfc;"| 1TB
 
|style="background-color: #ffc;"| 400G
 
|style="background-color: #cfc;"| 1.6TB
 
|-style="border-top-style: double;"
 
 
| blade13  
 
| blade13  
|style="background-color: #fcc;"| 60GB
 
 
|style="background-color: #cfc;"| yes
 
|style="background-color: #cfc;"| yes
 
|style="background-color: #fcc;"| no
 
|style="background-color: #fcc;"| no
|style="background-color: #cfc;"| yes
 
 
|-
 
|-
 
| blade14  
 
| blade14  
|style="background-color: #fcc;"| 60GB
 
 
|style="background-color: #cfc;"| yes
 
|style="background-color: #cfc;"| yes
 
|style="background-color: #fcc;"| no
 
|style="background-color: #fcc;"| no
 +
|-
 +
| melkbus
 
|style="background-color: #cfc;"| yes
 
|style="background-color: #cfc;"| yes
 +
|style="background-color: #fcc;"| no
 
|-
 
|-
 
| arrone
 
| arrone
|style="background-color: #fcc;"| 60GB
 
 
|style="background-color: #fcc;"| no
 
|style="background-color: #fcc;"| no
|style="background-color: #cfc;"| yes
 
 
|style="background-color: #cfc;"| yes
 
|style="background-color: #cfc;"| yes
 
|-
 
|-
 
| aulnes
 
| aulnes
|style="background-color: #fcc;"| 60GB
 
 
|style="background-color: #fcc;"| no
 
|style="background-color: #fcc;"| no
|style="background-color: #cfc;"| yes
 
 
|style="background-color: #cfc;"| yes
 
|style="background-color: #cfc;"| yes
 
|-
 
|-
 
| toom
 
| toom
|style="background-color: #cfc;"| 650GB
 
|style="background-color: #fcc;"| no
 
 
|style="background-color: #fcc;"| no
 
|style="background-color: #fcc;"| no
 
|style="background-color: #cfc;"| yes
 
|style="background-color: #cfc;"| yes
 
|-
 
|-
 
| span
 
| span
|style="background-color: #cfc;"| 750GB
 
|style="background-color: #fcc;"| no
 
 
|style="background-color: #fcc;"| no
 
|style="background-color: #fcc;"| no
 
|style="background-color: #cfc;"| yes
 
|style="background-color: #cfc;"| yes

Revision as of 15:35, 8 January 2015