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rbd: include trashed parent images while calculating the clone depth #4029

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@nixpanic nixpanic commented Aug 2, 2023

The getCloneDepth() function did not account for images that are in
the trash. A trashed image can only be opened by the image-id, and not
by name anymore.

Closes: #4013
Depends-on: #4064 #4273


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@mergify mergify bot added the component/rbd Issues related to RBD label Aug 2, 2023
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nixpanic commented Aug 4, 2023

/test ci/centos/mini-e2e/k8s-1.27

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This pr looks good to me.

internal/rbd/rbd_util.go Outdated Show resolved Hide resolved
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mergify bot commented Aug 8, 2023

This pull request now has conflicts with the target branch. Could you please resolve conflicts and force push the corrected changes? 🙏

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/test ci/centos/mini-e2e/k8s-1.27

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/test ci/centos/mini-e2e/k8s-1.27

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Manual stress testing with the scripts from rook/rook#12312 passes.

Need to fix the golangci-lint issues and have the go-ceph rebase merged before this is completely ready.

//
// This function re-uses the ioctx of the image to open all images in the
// chain. There is no need to open new ioctx's for every image.
func (ri *rbdImage) getCloneDepth() (uint, error) {
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hey @nixpanic,
Can we add another arguement like maxDepthToTraverse which can be used to exit and not traverse further unnecessarily?

We can pass hard rbdHardMaxCloneDepth+1 to the function call then.

wdyt?

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sure, I'll add that

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Added a 2nd commit to address this.

@nixpanic nixpanic marked this pull request as ready for review August 24, 2023 09:52
@nixpanic nixpanic requested review from Rakshith-R and a team August 25, 2023 07:27
riya-singhal31
riya-singhal31 previously approved these changes Aug 25, 2023
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LGTM, thanks Niels

@nixpanic nixpanic requested a review from a team August 29, 2023 11:57
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@Mergifyio rebase

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mergify bot commented Aug 30, 2023

rebase

✅ Branch has been successfully rebased

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LGTM, i will let @Rakshith-R to approve it as had some suggestions.

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Rakshith-R previously approved these changes Sep 4, 2023
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LGTM, thanks !

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@Mergifyio refresh

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mergify bot commented Sep 4, 2023

refresh

✅ Pull request refreshed

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@Mergifyio queue

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mergify bot commented Sep 4, 2023

queue

🛑 The pull request has been removed from the queue default

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@mergify mergify bot added the ok-to-test Label to trigger E2E tests label Sep 4, 2023
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/test ci/centos/upgrade-tests-cephfs

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For some reason, these commits prevent setting the meta-data for a cloned image (e2e suggests). When testing manually, no RBD-images get any meta-data set at all. The OMAP for all images (including the created snapshot) does have the expected meta-data... Still trying to understand what the e2e tests expect, and why they do not fail on previous test-cases.

It seemed that my deployment did not include --setmetadata=true for the provisioner... When setting it, the volume gets the expected (I think) metadata set. Trying again in the CI, now with enhanced logging.

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/test ci/centos/mini-e2e/k8s-1.28

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/test ci/centos/mini-e2e/k8s-1.28

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For anyone watching this, I have now noticed that the ImageID of a rbdSnapshot is not set to the right value, it is set to the ImageID of the original parent volume. Using the ImageID to open the rbdSnapshot, actually opens the parent image.

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Dropped the commit

rbd: use librbd.OpenImageById() if rbdVol.ImageID is set

as it seems that the ImageID is not always set to the correct value, but to the ImageID of a cloned image. Without this commit, e2e should pass.

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/test ci/centos/mini-e2e/k8s-1.28

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/test ci/centos/mini-e2e/k8s-1.28

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/test ci/centos/mini-e2e/k8s-1.28

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logs

  I1127 15:20:04.710772       1 utils.go:164] ID: 39 Req-ID: 0001-0024-65e89782-f2bd-4b30-85f4-fcad649cdded-0000000000000001-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 GRPC call: /csi.v1.Controller/DeleteVolume
  I1127 15:20:04.710860       1 utils.go:165] ID: 39 Req-ID: 0001-0024-65e89782-f2bd-4b30-85f4-fcad649cdded-0000000000000001-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 GRPC request: {"secrets":"***stripped***","volume_id":"0001-0024-65e89782-f2bd-4b30-85f4-fcad649cdded-0000000000000001-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6"}
  I1127 15:20:04.712116       1 omap.go:88] ID: 39 Req-ID: 0001-0024-65e89782-f2bd-4b30-85f4-fcad649cdded-0000000000000001-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 got omap values: (pool="replicapool", namespace="", name="csi.volume.ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6"): map[csi.imageid:1af286243815 csi.imagename:csi-vol-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 csi.volname:pvc-3d33943d-80f0-46d1-ad6e-d6165ee1b7e5 csi.volume.owner:rbd-6238]
  I1127 15:20:04.757621       1 rbd_util.go:637] ID: 39 Req-ID: 0001-0024-65e89782-f2bd-4b30-85f4-fcad649cdded-0000000000000001-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 rbd: delete csi-vol-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6-temp using mon rook-ceph-mon-a.rook-ceph.svc.cluster.local:6789, pool replicapool
  I1127 15:20:04.762284       1 controllerserver.go:1021] ID: 39 Req-ID: 0001-0024-65e89782-f2bd-4b30-85f4-fcad649cdded-0000000000000001-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 deleting image csi-vol-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6
  I1127 15:20:04.762309       1 rbd_util.go:637] ID: 39 Req-ID: 0001-0024-65e89782-f2bd-4b30-85f4-fcad649cdded-0000000000000001-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 rbd: delete csi-vol-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 using mon rook-ceph-mon-a.rook-ceph.svc.cluster.local:6789, pool replicapool
  E1127 15:20:04.763705       1 rbd_util.go:667] ID: 39 Req-ID: 0001-0024-65e89782-f2bd-4b30-85f4-fcad649cdded-0000000000000001-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 failed to delete rbd image: replicapool/csi-vol-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6, error: RBD image not found
  E1127 15:20:04.763736       1 controllerserver.go:1023] ID: 39 Req-ID: 0001-0024-65e89782-f2bd-4b30-85f4-fcad649cdded-0000000000000001-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 failed to delete rbd image: replicapool/csi-vol-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 with error: RBD image not found
  E1127 15:20:04.763801       1 utils.go:169] ID: 39 Req-ID: 0001-0024-65e89782-f2bd-4b30-85f4-fcad649cdded-0000000000000001-ccfe21c4-54cf-44cc-9a75-72ce1ad9adf6 GRPC error: rpc error: code = Internal desc = RBD image not found

Deleting the RBD image seems to have resulted in a (spurious?) error. The DeleteVolume CSI procedure is repeated over and over again, because the image was removed already.

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/test ci/centos/mini-e2e/k8s-1.28

`librbd.OpenImageById()` works if the image is in the trash, so it makes
it possible to get the parent of the image.

Signed-off-by: Niels de Vos <ndevos@ibm.com>
When a new volume is not created yet, the ImageID should not be set to
the ID of the snapshot.

Signed-off-by: Niels de Vos <ndevos@ibm.com>
In some places the ImageID is used as the ID of the parent. That is very
confusing and prone to errors. Instead, fetch the right ImageID where
possible, and set ParentID for referencing to parent images.

Signed-off-by: Niels de Vos <ndevos@ibm.com>
Signed-off-by: Niels de Vos <ndevos@ibm.com>
If the RBD-image is deleted already, the DeleteVolume CSI procedure is
expected to report success (as it should be idempotent). In case the
returned error indicates "RBD image not found", the error is ignored and
the DeleteVolume procedure continues.

Signed-off-by: Niels de Vos <ndevos@ibm.com>
The `getCloneDepth()` function did not account for images that are in
the trash. A trashed image can only be opened by the image-id, and not
by name anymore.

Closes: ceph#4013
Signed-off-by: Niels de Vos <ndevos@ibm.com>
The `getCloneDepth()` function does not need to traverse the whole chain
of parents when a certain max-limit is configured. The traversing can be
aborted once the hard-limit is reached. This makes the procedure a
little more efficient, as unnecessary traversing is prevented.

Signed-off-by: Niels de Vos <ndevos@ibm.com>
By returned `ABORTED` or `PRECONDITION_FAILED` in the right places, the
CO will retry with the same arguments until the snapshot is
`ReadyToUse`. This causes restoring a volume from a snapshot to be
delayed, until the snapshot can be used.

Signed-off-by: Niels de Vos <ndevos@ibm.com>
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nixpanic commented Dec 1, 2023

/test ci/centos/mini-e2e/k8s-1.27

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nixpanic commented Dec 1, 2023

From the logs it looks like the flattening of images is in progress. I have not found messages that suggest something is blocked, but it is well possible that there is a deadlock on the PVC-restore and snapshot-delete somewhere (I have seen these in manual testing too, but though I addressed them).

Maybe #1883 (comment) contains more hints on things that I have missed in the current PR.

@nixpanic nixpanic added the keepalive This label can be used to disable stale bot activiity in the repo label Dec 21, 2023
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mergify bot commented Apr 15, 2024

This pull request now has conflicts with the target branch. Could you please resolve conflicts and force push the corrected changes? 🙏

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