Subsections
When lease deployment with disk image transfers is selected,
this section is used to control image deployment parameters.
This section is required when:
- Option lease-deployment (in section [general])
is set to imagetransfer
- Valid values:
- unicast, multicast
- Required:
- Yes
- Description:
- Specifies how disk images are transferred. Valid values are:
-
unicast: A disk image can be transferred to just one node at a time
-
multicast: A disk image can be multicast to multiple nodes at
the same time.
- Valid values:
- True or False
- Required:
- No
(default is True)
- Description:
- Specifies whether the scheduler should take steps to
detect and avoid redundant transfers (e.g., if two leases are
scheduled on the same node, and they both require the same disk
image, don't transfer the image twice; allow one to ``piggyback''
on the other). There is generally no reason to set this option
to False.
- Valid values:
- A duration in the format HH:MM:SS
- Required:
- No
- Description:
- Forces the image transfer time to a specific amount.
This options is intended for testing purposes.
- Valid values:
- none, image-caches
- Required:
- No
(default is none)
- Description:
- Specifies whether disk image caches should be created
on the nodes, so the scheduler can reduce the number of transfers
by reusing images. Valid values are:
-
none: No image reuse
-
image-caches: Use image caching algorithm described in Haizea
publications
- Valid values:
- An integer number
- Required:
- Only if
- Option diskimage-reuse (in section [deploy-imagetransfer])
is set to True
- Description:
- Specifies the size (in MB) of the disk image cache on
each physical node.
Borja Sotomayor
2009-12-17
