ea5d2bdcf4
If any Ubiblk installations are enabled on a VmHost, the allocator will choose one at random, weighted by `allocation_weight`. Otherwise, SPDK will be used. Currently, Ubiblk is not installed by default and must be set up manually by an operator. Therefore, the default behavior in production is to continue using SPDK. Note: The values for `num_queues` and `queue_size` are provisional and may change based on future performance and resource usage experiments.
82 lines
2.7 KiB
Ruby
82 lines
2.7 KiB
Ruby
# frozen_string_literal: true
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require_relative "../model"
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class VmStorageVolume < Sequel::Model
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many_to_one :vm
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many_to_one :spdk_installation
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many_to_one :vhost_block_backend
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many_to_one :storage_device
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many_to_one :key_encryption_key_1, class: :StorageKeyEncryptionKey
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many_to_one :key_encryption_key_2, class: :StorageKeyEncryptionKey
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many_to_one :boot_image
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plugin :association_dependencies, key_encryption_key_1: :destroy, key_encryption_key_2: :destroy
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plugin ResourceMethods
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def device_id
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"#{vm.inhost_name}_#{disk_index}"
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end
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def device_path
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(vm.location.provider == "aws") ? "/dev/nvme1n1" : "/dev/disk/by-id/virtio-#{device_id}"
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end
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def spdk_version
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spdk_installation&.version
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end
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def vhost_block_backend_version
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vhost_block_backend&.version
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end
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def num_queues
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@num_queues ||= if vhost_block_backend
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[vm.vcpus / 2, 1].max
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else
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# SPDK volumes
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1
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end
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end
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def queue_size
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@queue_size ||= if vhost_block_backend
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64
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else
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# SPDK volumes
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256
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end
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end
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end
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# Table: vm_storage_volume
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# Columns:
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# id | uuid | PRIMARY KEY
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# vm_id | uuid | NOT NULL
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# boot | boolean | NOT NULL
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# size_gib | bigint | NOT NULL
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# disk_index | integer | NOT NULL
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# key_encryption_key_1_id | uuid |
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# key_encryption_key_2_id | uuid |
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# spdk_installation_id | uuid |
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# use_bdev_ubi | boolean | NOT NULL DEFAULT false
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# skip_sync | boolean | NOT NULL DEFAULT false
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# storage_device_id | uuid |
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# boot_image_id | uuid |
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# max_ios_per_sec | integer |
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# max_read_mbytes_per_sec | integer |
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# max_write_mbytes_per_sec | integer |
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# vhost_block_backend_id | uuid |
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# Indexes:
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# vm_storage_volume_pkey | PRIMARY KEY btree (id)
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# vm_storage_volume_vm_id_disk_index_key | UNIQUE btree (vm_id, disk_index)
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# Foreign key constraints:
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# vm_storage_volume_boot_image_id_fkey | (boot_image_id) REFERENCES boot_image(id)
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# vm_storage_volume_key_encryption_key_1_id_fkey | (key_encryption_key_1_id) REFERENCES storage_key_encryption_key(id)
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# vm_storage_volume_key_encryption_key_2_id_fkey | (key_encryption_key_2_id) REFERENCES storage_key_encryption_key(id)
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# vm_storage_volume_spdk_installation_id_fkey | (spdk_installation_id) REFERENCES spdk_installation(id)
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# vm_storage_volume_storage_device_id_fkey | (storage_device_id) REFERENCES storage_device(id)
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# vm_storage_volume_vhost_block_backend_id_fkey | (vhost_block_backend_id) REFERENCES vhost_block_backend(id)
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# vm_storage_volume_vm_id_fkey | (vm_id) REFERENCES vm(id)
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