[pod, wishlist] Add support for multiple storage pools.

[Koaps]

I have configured a Pod using Virsh and it is only showing a Local storage (118.9 GiB) however I use a ZFS pool that is 14TB.

virsh pool-list
 Name State Autostart
-------------------------------------------
 default active no
 zfspool active yes

virsh pool-info default
Name: default
UUID: a33198cd-afb7-4184-9b2e-f18fb30bc72f
State: running
Persistent: yes
Autostart: no
Capacity: 102.61 GiB
Allocation: 22.17 GiB
Available: 80.45 GiB

virsh pool-info zfspool
Name: zfspool
UUID: f64a089b-1485-47d2-bf3d-bee5a18af823
State: running
Persistent: yes
Autostart: yes
Capacity: 16.25 TiB
Allocation: 9.48 GiB
Available: 16.24 TiB

maas maas pod read 1
Success.
Machine-readable output follows:
{
    "total": {
        "cores": 24,
        "local_storage": 127624953200,
        "memory": 128907
    },
    "resource_uri": "/MAAS/api/2.0/pods/1/",
    "name": "iaasdev",
    "capabilities": [
        "composable",
        "dynamic_local_storage",
        "over_commit"
    ],
    "type": "virsh",
    "available": {
        "cores": 24,
        "local_storage": 127624953200,
        "memory": 128907
    },
    "used": {
        "cores": 0,
        "local_storage": 0,
        "memory": 0
    },
    "architectures": [
        "amd64/generic"
    ],
    "id": 1
}

[Данило Шеган (danilo)]

Actually, looking at this, this seems a lot like bug #1687305 — can you confirm you are using latest MAAS (or at least 2.2.1 which includes the fix)?

Local storage is reported as 127624953200 bytes, or 118.8599 GiB: MAAS misinterpreted storage size and assumed everything to be in GiB previously, so your 16.25TiB disk was added up as 16.25 GiB on top of 102.61 giving a total of 118.86Gib.

There seems to be another problem in that we are not ignoring inactive pools.

Can you please confirm what version of MAAS are you running?

[Koaps (koaps)]

I just upgraded to MAAS version: 2.2.2 (6099-g8751f91-0ubuntu1~16.04.1)

If I try to compose a VM I get a new error:

maas maas pod compose 4 cores=2 memory=2048 storage=local:300 hostname=test

Unable to compose machine because: Failed talking to pod: Specification mandate value for attribute network, line 1, column 13