mib1185 edited a comment on issue #3718: URL: https://github.com/apache/cloudstack/issues/3718#issuecomment-752084899
Hi, during setup of cloudstack, table `hypervisor_capabilities` is created by https://github.com/apache/cloudstack/blob/3a326f7280fefcd809573149ceb05b5fc7d07893/setup/db/create-schema.sql#L1657 with "default" entry for `KVM` https://github.com/apache/cloudstack/blob/3a326f7280fefcd809573149ceb05b5fc7d07893/setup/db/create-schema.sql#L1681 which results in `max_data_volumes_limit` for "kvm default" is set to 6 by https://github.com/apache/cloudstack/blob/3a326f7280fefcd809573149ceb05b5fc7d07893/setup/db/create-schema.sql#L1664 --- Now in case of creating an instance in state `stopped` it is never started and therefor `vm.getLastHostId()` returns NULL in https://github.com/apache/cloudstack/blob/3a326f7280fefcd809573149ceb05b5fc7d07893/server/src/main/java/com/cloud/storage/VolumeApiServiceImpl.java#L3252 and "fallback if no proper configuration is found" is triggered, which grabs the `max_data_volumes_limit` value for "default" hypervisor version (_which was set to 6 during setup_) https://github.com/apache/cloudstack/blob/3a326f7280fefcd809573149ceb05b5fc7d07893/server/src/main/java/com/cloud/storage/VolumeApiServiceImpl.java#L3266 --- But once the instance is deployed, `vm.getLastHostId()` will return a valid hostId, which results in respecting the real hypervisor version at https://github.com/apache/cloudstack/blob/3a326f7280fefcd809573149ceb05b5fc7d07893/server/src/main/java/com/cloud/storage/VolumeApiServiceImpl.java#L3262 --- During `Schema upgrade from 4.5.1 to 4.6.0` the `max_data_volumes_limit` is set to `32` for KVM https://github.com/apache/cloudstack/blob/3a326f7280fefcd809573149ceb05b5fc7d07893/engine/schema/src/main/resources/META-INF/db/schema-452to460.sql#L421 This will only be processed during update to 4.6, but I assume not during fresh install of 4.6 or later?! 🤔 Therefor I would recommend to also set `max_data_volumes_limit` to `32` during setup of database regards, Michael ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
