Hi Jay, Thank you for information. :)
Thank you, Bhagyashri -----Original Message----- From: Jay Pipes [mailto:jaypi...@gmail.com] Sent: Monday, January 30, 2017 11:31 PM To: openstack-dev@lists.openstack.org Subject: Re: [openstack-dev] [nova] How to use resource_providers for shared disk resources (NFS) On 01/30/2017 05:55 AM, Shewale, Bhagyashri wrote: > Hi nova devs, > > How can I use placement api's if my instance path is mounted on shared > storage server (e.g. NFS)? > > I am trying to set multinode setup with NFS shared storage for all > nodes to share disk resources along with placement services. As of now > it is creating resource providers for each of the compute node and > adds the DISK_GB for each resource provider. Correct. Well, I mean that this behaviour is expected (and is the identical behaviour that exists in Nova today with the non-placement API). We have not yet merged code that handles the correct accounting of shared storage, unfortunately. :( When we merge all the code that handles shared storage [1], you should be able to do something like the following: STORAGE_UUID=`openstack aggregate-create "my NFS storage pool"` openstack aggregate-host-associated $STORAGE_UUID $UUID_COMPUTE1 openstack aggregate-host-associated $STORAGE_UUID $UUID_COMPUTE2 Add some inventory to the aggregate, like so: PUT /resource_providers/$STORAGE_UUID/inventories { "DISK_GB": { "total": 1000, "reserved": 0, "min_unit": 10, "max_unit": 1000, "allocation_ratio": 1.0 } } and then the compute nodes will just "auto-heal" themselves, removing "local" DISK_GB inventories and using the DISK_GB inventory of the storage pool. But, again, this code isn't yet merged. We're making slow but steady progress, but I can't tell you when the code will fully land, unfortunately. Best, -jay [1] Code that builds upon this patch: https://review.openstack.org/#/c/407309/ > For example below are my environment details: > > NODE A: compute > NODE B: controller + compute > > Following entries are made in resource_providers table: > > +---------------------+---------------------+----+--------------------------------------+------------------------+------------+----------+ > > | created_at | updated_at | id | > uuid | name | > generation | can_host | > > +---------------------+---------------------+----+--------------------------------------+------------------------+------------+----------+ > > | 2017-01-30 06:49:17 | 2017-01-30 09:12:06 | 1 | > 6cbbaf2b-5b8c-4f38-8b34-ee23791056a6 | openstack-VirtualBox | > 3 | 0 | > > | 2017-01-30 09:02:29 | 2017-01-30 09:11:03 | 3 | > bad71c26-8f36-43ea-abf4-bdbeffda9e54 | openstack-VirtualBox-1 | > 2 | 0 | > > +---------------------+---------------------+----+--------------------------------------+------------------------+------------+----------+ > > > > Following are the entries of inventories tables, of which 89 indicates > the DISK_GB (size of shared storage): > > > > +---------------------+---------------------+----+----------------------+-------------------+-------+----------+----------+----------+-----------+------------------+ > > | created_at | updated_at | id | resource_provider_id > | resource_class_id | total | reserved | min_unit | max_unit | > | step_size allocation_ratio | > > +---------------------+---------------------+----+----------------------+-------------------+-------+----------+----------+----------+-----------+------------------+ > > | 2017-01-30 06:49:19 | 2017-01-30 09:10:37 | 1 | 1 > | 0 | 1 | 0 | 1 | 1 | 1 > | 16 | > > | 2017-01-30 06:49:19 | 2017-01-30 09:10:37 | 2 | 1 > | 1 | 11210 | 512 | 1 | 11210 | 1 > | 1.5 | > > | 2017-01-30 06:49:19 | 2017-01-30 09:10:37 | 3 | 1 > | 2 | 89 | 0 | 1 | 89 | 1 > | 1 | > > | 2017-01-30 09:02:31 | 2017-01-30 09:11:03 | 7 | 3 > | 0 | 1 | 0 | 1 | 1 | 1 > | 16 | > > | 2017-01-30 09:02:31 | 2017-01-30 09:11:03 | 8 | 3 > | 1 | 10253 | 512 | 1 | 10253 | 1 > | 1.5 | > > | 2017-01-30 09:02:31 | 2017-01-30 09:11:03 | 9 | 3 > | 2 | 89 | 0 | 1 | 89 | 1 > | 1 | > > +---------------------+---------------------+----+----------------------+-------------------+-------+----------+----------+----------+-----------+------------------+ > > > > However still I am able to create the instances over the size of > actual shared storage. > > > > Please let me know how to configure resource_providers in case of > shared storage servers are used for disk resources. > > > > Thank you, > > > > Bhagyashri > > > ______________________________________________________________________ > Disclaimer: This email and any attachments are sent in strictest > confidence for the sole use of the addressee and may contain legally > privileged, confidential, and proprietary data. 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