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Posted to commits@cloudstack.apache.org by GitBox <gi...@apache.org> on 2022/12/06 20:48:29 UTC
[GitHub] [cloudstack] GutoVeronezi commented on pull request #6868: Set root volume as destroyed when destroying a VM
GutoVeronezi commented on PR #6868:
URL: https://github.com/apache/cloudstack/pull/6868#issuecomment-1339987731
@weizhouapache, I tested the PR and had the following results:
First I configured the environment to run the cleanup tasks every 5 seconds, with a delay before expunging the resources of 45 seconds for volumes and 90 seconds for VMs:
```
storage.cleanup.interval = 5
expunge.interval = 5
storage.cleanup.delay = 45
expunge.delay = 90
```
I then created a specific account for the tests.
---
With the configuration `destroy.root.volume.on.vm.destruction` as `false` (i.e.: the current behavior), I did 3 tests:
1. I created a VM with a data disk and verified that the account was consuming 2 volumes. Then, I destroyed the VM along with the data disk (without expunging); the data disk was put in `Destroy` state and it was detached from the VM. The ROOT disk stayed in `Ready` state and attached to the VM. After deleting the VM, I verified that the account was consuming 1 volume. Two records of type `VOLUME.DELETE` were persisted in table `cloud.usage_event`. After 45 seconds, the data disk was expunged[^data-disk-current-behavior] and the ROOT disk stayed in `Ready` state and attached to the VM. After 90 seconds, the ROOT volume was expunged along with the VM. Finally, I verified that the account was consuming 0 volumes.
2. I created a VM with a data disk and verified that the account was consuming 2 volumes. Then, I destroyed the VM along with the data disk (without expunging); the data disk was put in `Destroy` state and it was detached from the VM while the ROOT disk stayed in `Ready` state and attached to the VM. After deleting the VM, I verified that the account was consuming 1 volume. Two records of type `VOLUME.DELETE` were persisted in table `cloud.usage_event`. Then, I recovered the VM and a record of type `VOLUME.CREATE` was persisted in table `cloud.usage_event` for the ROOT disk. The account was still consuming 1 volume. Finally, I recovered the data disk and a record of type `VOLUME.CREATE` was persisted in table `cloud.usage_event` for the data disk. Also, I verified that the account was consuming 2 volumes after recovering both ROOT and data disks.
3. I created a VM with a data disk and verified that the account was consuming 2 volumes. Then, I destroyed the VM along with the data disk (without expunging); the data disk was put in `Destroy` state and it was detached from the VM. The ROOT disk stayed in `Ready` state and attached to the VM. After deleting the VM, I verified that the account was consuming 1 volume. Two records of type `VOLUME.DELETE` were persisted in table `cloud.usage_event`. I changed the configuration `destroy.root.volume.on.vm.destruction` to `true`. Like the first test, after 45 seconds, the data disk was expunged[^data-disk-current-behavior] and the ROOT disk stayed in `Ready` state and attached to the VM. After 90 seconds, the ROOT volume was expunged along with the VM. Finally, I verified that the account was consuming 0 volumes.
Both tests presented the expected result: ROOT volume stayed in `Ready` state until the VM expunge and the account kept consuming 1 volume until the ROOT disk was expunged.
---
With the configuration `destroy.root.volume.on.vm.destruction` as `true` (i.e.: the current behavior), I did 3 tests:
1. I created a VM with a data disk and verified that the account was consuming 2 volumes. Then, I destroyed the VM along with the data disk (without expunging); the ROOT and the data disks were put in `Destroy` state and were detached from the VM. After deleting the VM, I verified that the account was consuming 0 volumes. Two records of type `VOLUME.DELETE` were persisted in table `cloud.usage_event`. After 45 seconds, the data disk was expunged[^data-disk-current-behavior] and the ROOT disk stayed in `Destroy` state. After 90 seconds, the ROOT volume was expunged along with the VM.
2. I created a VM with a data disk and verified that the account was consuming 2 volumes. Then, I destroyed the VM along with the data disk (without expunging); the ROOT and the data disks were put in `Destroy` state and were detached from the VM. After deleting the VM, I verified that the account was consuming 0 volumes. Two records of type `VOLUME.DELETE` were persisted in table `cloud.usage_event`. Then, I recovered the VM and a record of type `VOLUME.CREATE` was persisted in table `cloud.usage_event` for the ROOT disk and the account was consuming 1 volume. Finally, I recovered the data disk and a record of type `VOLUME.CREATE` was persisted in table `cloud.usage_event` for the data disk. Also, I verified that the account was consuming 2 volumes after recovering both ROOT and data disks.
3. I created a VM with a data disk and verified that the account was consuming 2 volumes. Then, I destroyed the VM along with the data disk (without expunging); the ROOT and the data disks were put in `Destroy` state and were detached from the VM. After deleting the VM, I verified that the account was consuming 0 volumes. Two records of type `VOLUME.DELETE` were persisted in table `cloud.usage_event`. I changed the configuration `destroy.root.volume.on.vm.destruction` to `false`. Like the first test, after 45 seconds, the data disk was expunged[^data-disk-current-behavior] and the ROOT disk stayed in `Ready` state and attached to the VM. After 90 seconds, the ROOT volume was expunged along with the VM. Finally, I verified that the account was consuming 0 volumes.
Both tests presented the expected result: ROOT volume was put in `Destroy` state and was properly expunged only with the VM expunge task, and the account was consuming 0 volumes.
---
Based on the results of the manual test, [Trillian](https://github.com/apache/cloudstack/pull/6868#issuecomment-1327034590)[^error-trillian] tests results, Travis results, [packaging results](https://github.com/apache/cloudstack/pull/6868#issuecomment-1326501535) and approvals, I will merge this PR.
[^data-disk-current-behavior]: as the data disks are detached from the VM, the disk expunge task will expunge it. This is the current behavior and was not touched by the PR.
[^error-trillian]: error in Trillian does not seem related to the PR changes: `AssertionError: Expected '1' routers at state 'PRIMARY', but found '0'!`.
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