On 15/10/2015 11:45, Jose Ricardo Ziviani wrote:
Hello,
I'm about to write a new feature to Kimchi. It will allow users to define any existing volume group as a storage pool, where guests will be able to create logical volumes into it. NOTE: VGs already in use as storage pool won't be listed.
I read Pooja's "[RFC] Proposal to manage Physical Volumes on Ginger", and now I think all LVM code should be implemented in WOK so both plugins (Kimchi/Ginger) could take advantages from that.
API:
Collection: /plugins/kimchi/host/vgs Method: GET Returns: list of vgnames: [vgname1, vgname2]
ACK
Resource: /plugins/kimchi/host/vg/vgname Method: GET Returns: dict { vgname, size, free_size, [PV partition list, like: sda4, sdb3], [LV name list, like: lv_root] }
ACK
Resource: /plugins/kimchi/storagepools/vgname Method: POST data: { vgname, storagepool_name, type=logical }
I am little bit confused with this API. Usually the POST is done in a Collection so, something like: POST /plugins/kimchi/storagepools {name: pool_name, type: logical, vgname: vg_name} Is that what you are proposing?
The frontend, I think we could have a table indicating all available devices available for a logical storage pool, for example:
Define a New Storage Pool 1. Storage Pool Name +-----------------------------------------+ | mypool | +-----------------------------------------+ The name used to identify the storage pools, and it should not be empty.
2. Storage Pool Type +-----------+ | LOGICAL | +-----------+
3. Device path +-------+-------+---------------+---------------+ | |device | size | free size | +-------+-------+---------------+---------------+ | () | sdb | 50 GiB | 50 GiB | +-------+-------+---------------+---------------+ | () | sdc | 10 GiB | 8 GiB | +-------+-------+---------------+---------------+ | () | vg_a | 20 GiB | 18 GiB | +-------+-------+---------------+---------------+
+--------+ | Create | +--------+
May user select multiple VGs to create a logical pool? Or is it restrict to one by one, one VG, one logical pool? Depending on that, we need to redesign the UI
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