Openstack Download //TOP\ Volume

Image properties are copied along with the image when creating a volumeusing --image. Note that these properties are immutable on theimage itself, this option updates the copy attached to this volume.

You can transfer a volume from one owner to another by using theopenstack volume transfer request create command. The volumedonor, or original owner, creates a transfer request and sends the createdtransfer ID and authorization key to the volume recipient. The volumerecipient, or new owner, accepts the transfer by using the ID and key.

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The volume must be in an available state or the request will bedenied. If the transfer request is valid in the database (that is, ithas not expired or been deleted), the volume is placed in anawaiting-transfer state. For example:

Image properties are copied along with the image when creating a volumeusing --image. Note that these properties are immutable on the imageitself, this option updates the copy attached to this volume.

Depending on the setup of your cloud provider, they may give you an endpoint touse to manage volumes, or there may be an extension under the covers. In eithercase, you can use the openstack CLI to manage volumes.

It seems that there's no Ansible module capable of doing so. The OpenStack CLI allows you to complete this in two steps, first create a transfer request then accept it, so the the hypothetical module closest to what you are trying to achieve should be extending the volume_info or writing a similar module, where the module would update the volume properties with the new project ID.

Before starting kube-apiserver component you need a working etcd instance, but of course you can't just perform kubectl apply -f or put a manifest to addon-manager folder because cluster is not ready at all.There is a way to start pods by kubelet without having a ready apiserver. It is called static pods (yaml Pod definitions usually located at /etc/kubernetes/manifests/). And it is the way I start "system" pods like apiserver, scheduler, controller-manager and etcd itself. Previously I just mounted a directory from node to persist etcd data, but now I would like to use OpenStack blockstorage resource. And here is the question: how can I attach, mount and use OpenStack cinder volume to persist etcd data from static pod?

CSI OpenStack cinder driver which is pretty much new way of managing volumes. And it won't fit my requirements, because in static pods manifests I can only declare Pods and not other resources like PVC/PV while CSI docs say:

Message Volume has not been added to the list of VolumesInUse in the node's volume status for volume. says that attach/detach operations for that node are delegated to controller-manager only. Kubelet waits for attachment being made by controller but volume doesn't reach appropriate state because controller isn't up yet.The solution is to set kubelet flag --enable-controller-attach-detach=false to let kubelet attach, mount and so on. This flag is set to true by default because of the following reasons

Sometimes, randomly, Openstack will fail to delete a volume on our storage back-end. Actually, it *does* delete the volume on the SAN, but the GUI reports it as 'Error Deleting'. It will sit there as 'Error Deleting' forever, even as the other volumes delete successfully.

Auth information is driven by openstacksdk, which means that values can come from a yaml config file in /etc/ansible/openstack.yaml, /etc/openstack/clouds.yaml or ~/.config/openstack/clouds.yaml, then from standard environment variables, then finally by explicit parameters in plays. More information can be found at

Instance attachment information. If this volume is attached to a server instance, the attachments list includes the UUID of the attached server, an attachment UUID, the name of the attached host, if any, the volume UUID, the device, and the device UUID. Otherwise, this list is empty.

We'll now look at the local NFS mounts that are present on the node that is running cinder-volume and look for the volumes that were created on NFS backends. By mapping the mountpoints to the directories where the volume files exist, we are able to associate that the volumes were created in the appropriate FlexVol volume that had the NetApp specific features enabled that matched the Cinder volume type definitions.

This is the volume of type nfs which was placed on 10.63.40.153:/vol2_dedup. It could have been placed on 10.63.40.153:/vol3_compressed, 10.63.40.153:/vol4_mirrored, or 10.63.40.153:/vol5_plain as any of those destinations would have fulfilled the volume type criteria of storage_protocol=nfs.

Note that the volumes of type analytics and iscsi, as well as the volume created without a type did not appear under the NFS mount points because they were created as iSCSI LUNs within the E-Series and CDOT systems, respectively.

Support for Consistency groups has been deprecated in Block Storage V3API. Only Block Storage V2 API supports consistency groups. Futurereleases will involve a migration of existing consistency group operationsto use generic volume group operations.

In this section, we will configure a Cinder volume type, associate thevolume type with a backend capable of supporting consistency groups,create a Cinder consistency group, create a Cinder volume within theconsistency group, take a snapshot of the consistency group, and thenfinally create a second consistency group from the snapshot of the firstconsistency group.

To delete a consistency group, first make sure that any snapshots of theconsistency group have first been deleted, and that any volumes in theconsistency group have been removed via an update command on theconsistency group.

In this section, we will configure a Cinder volume type, associate thevolume type with a backend capable of supporting groups, create a Cindergroup type, create a Cinder group, create a Cinder volume within the group,take a snapshot of the group, and then finally create a group from thesnapshot of the first group.

Currently only the Block Storage V3 API supports group operations. Theminimum version for group operations supported by the FlashArray drivers is3.14. The API version can be specified with the following CLI flag--os-volume-api-version 3.14. Optionally an environment variable canbe set: export OS_VOLUME_API_VERSION=3.14

The FlashArray volume drivers support the consistent_group_snapshot_enabledgroup type. By default Cinder group snapshots take individual snapshotsof each Cinder volume in the group. To enable consistency group snapshots setconsistent_group_snapshot_enabled=" True" in the group type used.

Symptom 2:

The second time onwards of bootable volume creations from image-volume cache, the size of created volumes was not rounded to 8 GB on the OpenStack side.

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Symptom 1:

As an example, when a 33 GB bootable volume creation was initially requested, both OpenStack and PowerFlex expected to have the same 40 GB size volume. However, the 8 GB volume was created on the OpenStack side.

$ openstack volume list --long

$ openstack volume create --image cirros --type sio --size 33 33gb-1

$ openstack volume list --long

+--------------------------------------+--------------------------------------------+-------

+--------------------------------------+--------------------------------------------+-------

| fed72292-fd84-4b33-bf63-063f1bfb9f75 | 33gb-1 | available | 8 | sio | true | | |

Symptom 2:

As an example, when a 50 GB bootable volume creation is requested while a volume-image cache is enabled, both OpenStack and PowerFlex expect to have the same 56 GB size volume. However, the 50 GB volume was created on the OpenStack side.

$ openstack volume create --image cirros --type sio --size 50 50gb-1

$ openstack volume list --long

+--------------------------------------+--------------------------------------------+-------

+--------------------------------------+--------------------------------------------+-------

| 1f0a279f-9c3d-42a2-ba9c-f31fa160c92c | 50gb-1 | available | 50 | sio | true | | |

Symptom 1:

This is not a Cinder driver issue but an OpenStack Cinder internal mechanism. The issue is that Cinder does not expect storage to return a different size of disks than what a user specifies.

To resolve it, fix the Cinder cinder/volume/flows/manager/create_volume.py file. It must be aware of possible rounding by cinder driver or backend storage and to correct corresponding test suites.

Issue tracking #1915015 was opened for the OpenStack Cinder community to address the issue. cf. +bug/1915015

Symptom 2:

This is a Cinder driver issue with the create_volume_from_snapshot function. The create_cloned_volume/extend_volume has the same issue.

There is an option to fix it in the Cinder driver by returning a real volume size, but that way could not pass the Tempest test cycles due to another issue on the Tempest side.

For now, the Tempest issue must be fixed first in order to implement a fix in the Cinder driver.

Issue tracking #1917299 was opened for the OpenStack Tempest community to address the issue. cf. +bug/1917299

Note: This is not related to symptom 1. Users theoretically experience this issue even without the image_volume_cache_enabled option but when the above functions are called.

Cinder is the code name for the OpenStack Block Storage project. OpenStack Block Storage provisions and manages block devices known as Cinder volumes. Cinder also provides a self-service application programming interface (API) to enable users to request and consume storage resources without having to know anything about their type or location. 2351a5e196