hi,

i trying to import some existing qcow2 images into my new installed STX 2.0.

openstack image create --file /media/foobar.qcow2 --private --unprotected --disk-format qcow2 "foobar"

all works fine, the image are available.

now, i'm trying to create an new volume based on this images. if the images are <=6GB all works fine, but some images are very huge (10-200GB) and then it ends in an error. after some research i can see on controller the mount point

/dev/mapper/cgts--vg-docker--lv      30G   11G   20G  35% /var/lib/docker

increase the used storage. after fail "volume create" it goes back to given value 35%. in my oppinion, this mount point should resize to some value about 300-400GB, but how? in STX horizon backend (http://10.10.10.2:8080/admin/system_config/?tab=system_config_tab__storage_table) there is an "docker-distribution", but no docker-mount-point itself?

btw, if i try to change the "docker-distribution" value to some other value (eg. 500GB via horizon backend), i got this error:

Error: backup size of 60 is insufficient for host controller-1. Minimum backup size of 100 is required based upon glance size 20 and database size 20. Rejecting modification request.

- see attachment -

how can i increase the backup size to handle this error?!

greez & thx, volker...