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Can I create a flavour with no local ephermal storage?

asked 2013-08-12 07:18:18 -0500

Stenstad gravatar image

I want to set up a OpenStack solution where the compute nodes doesn't use local storage at all (except for OS and local applications), and where all storage is automatically allocated as Ceph RBD volumes. Is there any support of this out of the box in OpenStack?

The main reason for not using local storage at all, is to be able to do live-migrations on the guests, so that I can evict VMs for maintenance.

I know that I can set up a volume in Cinder, mark it as bootable, and spin up an instance using that volume. But I want the flavor to allocate ephermal storage for the glance-image automatically.

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answered 2013-08-12 21:17:43 -0500

Try using the nova flavor-create command to create new flavors.

nova flavor-create [--ephemeral <ephemeral>] [--swap <swap>] \ [--rxtx-factor <factor>] [--is-public <is-public>] <name> <id> <ram> <disk> <vcpus>

--ephemeral <ephemeral> (optional) is the ephemeral space size in GB (the default is 0).
--swap <swap> (optional) is the swap size in MB (the default is 0).
--rxtx-factor <factor> is the RX/TX factor (the default is 1).
--is-public <is-public> makes the flavor accessible to the public (the default is true).
<name> is the name of the new flavor.
<id> is the unique integer ID for the new flavor.
<ram> is the memory size in MB.
<disk> is the disk size in GB.
<vcpus> is the number of vCPUs.
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This is just the output of nova flavor-create, and doesn't really answer my question.

Stenstad gravatar imageStenstad ( 2013-08-13 01:23:19 -0500 )edit

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Asked: 2013-08-12 07:18:18 -0500

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Last updated: Aug 12 '13