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fosshostorg / aarch64

Dashboard and API for https://console.aarch64.com
https://console.aarch64.com
GNU Affero General Public License v3.0
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Support virtio block devices #22

Closed lanefu closed 3 years ago

lanefu commented 3 years ago

You may want this to be a user flag at provisioning for edge cases, but typically using virtio block device on any modern linux is going to be optimal.

https://github.com/natesales/aarch64/blob/4e65af0ad78444f8b7f320feb7d68e633eecd568/provisioning/roles/vms/tasks/main.yml#L64

I'd suggest trying

--disk path=/opt/aarch64/vms/{{ item["_id"] }}-disk.qcow2,bus=virtio \

natesales commented 3 years ago

I agree, seems like a sensible default to go with the virtio driver here. Also, maybe we should set an explicit cache setting?

cache
    The cache mode to be used. The host pagecache provides cache memory. The cache value can be 'none', 'writethrough', or 'writeback'. 'writethrough' provides read caching. 'writeback' provides read and write caching.

virt-install(1)

lanefu commented 3 years ago

Given the single disk and shared tenancy id suggest trying writeback. This will give the VM host a chance to be efficient with write IOs