do not allow lauch of instances with memory less than 512

[Dafna Ron]

I can create a flavor with 1MB of memory and launch instances.

since as far as I know we do not have any computers that run on less than 512MB (even that is rare today) I am not sure allowing less than 512MB should be allowed.

[Dafna Ron (dron-3)]

[root@puma32 ~(keystone_admin)]# nova flavor-create Dafna_cli1 92 1 6 1
+----+------------+-----------+------+-----------+------+-------+-------------+-----------+
| ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public |
+----+------------+-----------+------+-----------+------+-------+-------------+-----------+
| 92 | Dafna_cli1 | 1 | 6 | 0 | | 1 | 1.0 | True |
+----+------------+-----------+------+-----------+------+-------+-------------+-----------+

[root@puma32 ~(keystone_admin)]# nova show 8ff3a219-4119-4d54-b62e-1af85c743f09
+--------------------------------------+----------------------------------------------------------+
| Property | Value |
+--------------------------------------+----------------------------------------------------------+
| status | ACTIVE |
| updated | 2014-05-07T16:33:00Z |
| OS-EXT-STS:task_state | None |
| OS-EXT-SRV-ATTR:host | puma32.scl.lab.tlv.redhat.com |
| key_name | None |
| image | two (014f76a0-fd5a-48b0-8fdb-e3e684efe7a3) |
| hostId | 6bd25fb14bba890fa4a8c2cd793ff056a9ae39dbddcebd683fee1f6b |
| OS-EXT-STS:vm_state | active |
| OS-EXT-SRV-ATTR:instance_name | instance-0000001a |
| OS-SRV-USG:launched_at | 2014-05-07T16:33:00.000000 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | puma32.scl.lab.tlv.redhat.com |
| flavor | Dafna_cli1 (92) |
| id | 8ff3a219-4119-4d54-b62e-1af85c743f09 |
| security_groups | [{u'name': u'default'}] |
| OS-SRV-USG:terminated_at | None |
| user_id | 81c761b68ebb423cb29312b8bede978a |
| name | dafna |
| created | 2014-05-07T16:32:54Z |
| tenant_id | 5502ab8e099843cfa39df71b3037ccd6 |
| OS-DCF:diskConfig | MANUAL |
| metadata | {} |
| novanetwork network | 192.168.32.3 |
| os-extended-volumes:volumes_attached | [] ...

[Thang Pham (thang-pham)]

The cirros image can run with less than 512M. What about those? They are used by tempest and devstack. I do not believe nova should limit how much memory a flavor should have.