Hello Dev,
I have recently upgraded our cloudstack environment to 4.11. Mostly all has
been smooth. ( this environment is legacy from cloud.com days! )
There are some issues that I have run into:
1.Can't install any VMs from ISO ( I have seen this in the list previously but
can't find a bug report for it ) If further reports or debug will help I can
assist. It is easy to reproduce.
2.When a VM is created from a template, the RBD features are lost. More info
below.
Example of VM volume from template: -
user@NAS-AUBUN-RK3-CEPH01:~# rbd info
AUBUN-KVM-CLUSTER01-SSD/feeb52ec-f111-4a0d-9785-23aadd7650a5
rbd image 'feeb52ec-f111-4a0d-9785-23aadd7650a5':
size 150 GB in 38400 objects
order 22 (4096 kB objects)
block_name_prefix: rbd_data.142926a5ee64
format: 2
features: layering
flags:
create_timestamp: Fri Apr 27 12:46:21 2018
parent:
AUBUN-KVM-CLUSTER01-SSD/d7dcd9e4-ed55-44ae-9a71-52c9307e53b4@cloudstack-base-snap
overlap: 150 GB
Note the features are not the same as the parent : -
user@NAS-AUBUN-RK3-CEPH01:~# rbd info
AUBUN-KVM-CLUSTER01-SSD/d7dcd9e4-ed55-44ae-9a71-52c9307e53b4
rbd image 'd7dcd9e4-ed55-44ae-9a71-52c9307e53b4':
size 150 GB in 38400 objects
order 22 (4096 kB objects)
block_name_prefix: rbd_data.141d274b0dc51
format: 2
features: layering, exclusive-lock, object-map, fast-diff, deep-flatten
flags:
create_timestamp: Fri Apr 27 12:37:05 2018
If you manually clone the volume the expected features are retained. We are
running the latest Ceph version, KVM hosts on Ubuntu 16.04 with the latest
Luminous qemu-img.
Kind regards,
Glen Baars
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