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Manila/SAP enterprise team


The SAP Manila enterprise team tries to address topics to make Manila enterprise ready. The listed topics can be bugs, features or even long running tasks.

Open Topics:

No Issue Description Priority BackPort Assigne Reference Release Status
1 Snapshot:
Make it possible for users to specify "full copy clones" or "copy-on-write clones"
In order to speed up the rollout the concept requires to 'clone a template' , where a template is a snapshot of a master volume and clone resolves into a snapshot (manila create --snapshot) A NetApp NetApp cDOT driver configurable clone split.
Define a NetApp extra spec that is used to define a share type that selects whether an initial clone split will be processed as part of the create-from-snapshot workflow. NetApp cDOT driver configurable clone split
NetApp cDOT driver configurable clone split on create-from-snapshot
Newton OK
2 Snapshot:
Make it possible for users decouple the "copy-on-write clones" from it's source snapshot
Shares based on Snapshots are bound to the source pool. Over the lifetime of a project the need may arise to migrate the shares to other backends. The first step towards this is to break the dependency from the source i.e. break the "copy-on-write-clones" C  ? Implementation of #'s 1, 4, 5, & 6 may obviate this.
3 Manila-share active-active HA Manila service manila-share should be active-active HA. This means a backend should be managed by at least 2 services. A  ? See cinder example: "Use Tooz to replace local file locks"
4 Migrate:
A share within the same share server / share network
With growing projects capacity as well as performance may require to move a share within the same share server / share network to a different pool. Migration should support this preferably as function within the backend specific driver to keep overhead to a minimum A NetApp Newton Started
5 Migrate:
A share to a different share server
In case the share servers capacity is at it'S limits, or the share network need to be changed (moving from a QA to a production network) it is required to allow the migration to a different share server/network. Optionally the scheduler may choose the target. If possible drivers can handle this migration B  ?
6 Migrate:
A share to a different availability zone
Move shares between Availability zones. Optionally the scheduler may choose the target. C  ?
7 Schedule:
Use of virtual resources to schedule share creation
Large enterprise applications do not only require capacity for shares but may also rely on other attributes such as I/O, network bandwidth, that define the limits for a certain resource-'pool'. Virtual resources could help to guide the scheduler to consume those virtual resources based on shared types and thus limit the creation of shares based on those limits. C  ?
8 Manila Create
Manila create --snapshot --schedule, create a clone via scheduler
Creating a clone using a snapshot will allocate the share from the same pool/resource. Due to resource or other limitations this may require a later migration. Optimizing the creation process using the scheduler logic for selecting the target resource should combine all these steps within one, leaving - if possible - the hard work within the driver. C  ?
9 Specify NFS protocol Set active NFS protocol (for backend / share server) NFSV3 ,NFSV4.0, NFSV4.1 A Mitaka NetApp The network protocol can be choosen in manila.conf with f.e.
netapp_enabled_share_protocols = nfs3
netapp_enabled_share_protocols = nfs4.0
netapp_enabled_share_protocols = nfs3, nfs4.0, nfs4.1
manila has to be restarted.
Then the choosen protocol is used while manila create
See: NetApp cDOT multi-SVM driver configurable NFS versions
If you want to create a share with NFS3 only: Create a second backend in manila.conf with nfs3. Create an additional type with key share_backend_name using this additional backend. Create manila share using this new share-type. So the newly defined nfs_protocols is used for this share. Additional share-server are created even on the same share-network.
Newton OK
10 MTU Size must be definable actual there is no way to define the MTU Size for the broadcast domain setup (NetApp driver) A Mitaka SAP & NetApp Bug Report : ML2 plugin does not set correct MTU for multiple provider networks
Fix provided to dynamically evaluate the MTU size set in neutron when creating a share server. In order to use this feature the NetApp port used for VLAN's need to be in a broadcast domain that allows this MTU size. Smaller MTU sizes on VLAN LIF's are possible.
Fix merged: Fix passing error physical network for get_mtu
Newton OK
11 HPB
Manila hierarchical port binding support
Port binding with multi-segement support A SAP See blueprint: Manila networking support for hierarchical port bindings Newton
12 Root Volume
allow more than one aggr with parameter "netapp_root_volume _aggregate"
Current issue: In case of a node fail all SVM´s are affected and takeover/giveback will take long. B NetApp on-site In standard operation guides it is proposed to distribute root volumes for SVM's across the cluster. This is currently not possible with OpenStack Manila. Why not using the selected aggregate for the first volume to place also the root volume, in case the the option netapp_root_volume_aggregate is not set. In this case "follow the first aggregate" it's assumed that there is enough space left on the selected aggregate to place also the SVM root volume. proposal
13 LSMirror:
Implement LS-Mirror for NFS-Versions lower than V4.1
In case NFS V4.1 is used, we do not need LS-mirror functionality but if we use a lower Version we have to have it and we have to take care about the changing configuration behavior within the driver scripts C NetApp on-site Need to revalidate business scenario. Seems not valid 160920: due to the possibility to use NFS V3 only it is required to have LS-Mirror configuration available for better performance.
Please also have a look to the NetApp documentation: ONTAP working with load-sharing mirrors
14 Add resources: Automatic adapt resources when adding controllers to a cluster When extending an existing cluster using managed shared servers, the already existing servers should automatically be extended, i.e. adding LIF's to the controllers, adding the required metadata for the shares,... so that the new resources could be utilized. B
15 List Extra specs:
API extension to list the extra specs
Currently documentation is the only space to find available extra specs. API call listing all specs based on available / configured drivers would be a huge help for configuration B See: Capabilities and extra specs
See also: Share Type definition
See extra specs: NetApp supported extra specs
16 Replication:
Replication between availability zones when using managed share servers
Classical DR requirement C
17 Scheduler:
Scheduler not using all pools
It seems that the manila scheduler is not using all the available pools to distribute shares. Instead if a share server hold 2 pools (i.e. aggregates) the first one will be filled before the seconds is used for placement of a new share A NetApp local In order to ensure that the scheduler recognizes the updated capacity we need a minimum of 2 minutes in between "manila create" calls. This may have a significant impact on creating shares for SAP systems where typically more than one share is required. In m-sch.log the free capacity is shown. As long as the pool is used with the highest free capacity it works fine. Newton OK
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