disk image create creates image size of atleast 1G

[jsb]

disk image create creates a qcow2 image with virtual size of atleast 1G. If DISK-IMAGE-SIZE is used in decimals,then, truncate command errors out as invalid number. This forces the image to be atleast 1G in size. Could this made in Mega bytes so that image less than 1 G can be created.
Thanks

[Thang Pham (thang-pham)]

Could you be more specific with how you ran into this error? Which commands did you run? How do you recreate this bug?

Just guessing what you did, I tried to use a decimal in my image-size, and got the expected error:

$ nova boot --flavor x1.tiny --block-device source=image,id=2913cff0-a7aa-463a-af95-60dd9cf5e401,dest=volume,size=3.5,shutdown=remove,bootindex=0 --key-name stack test1ERROR (BadRequest): Block Device Mapping is Invalid: Invalid volume_size. (HTTP 400) (Request-ID: req-6b92b300-336e-4cfd-ac80-a7ebf22df063)

[jsb (jay-s-b)]

This happens at the time of creation of user image. I tried creating a simple operating system by setting DIB_IMAGE_SIZE to 0.8 .
diskimage-builder/bin/disk-image-create command fails at
truncate: invalid number `0.8G'
umount2: Invalid argument
umount: /tmp/image.skD9govK: not mounted
umount2: Invalid argument

Works fine if DIB_IMAGE_SIZE is not a decimal number.

Thanks

[Thang Pham (thang-pham)]

Ok, diskimage-builder is not a nova component. It is it's own project.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/190026

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/190026
Committed: https://git.openstack.org/cgit/openstack/diskimage-builder/commit/?id=f84b910f152220294a723836a71586974efadede
Submitter: Jenkins
Branch: master

commit f84b910f152220294a723836a71586974efadede
Author: yogananth subramanian <email address hidden>
Date: Wed Jun 10 10:55:13 2015 +0530

    Enable decimal value for $DIB_IMAGE_SIZE.

    Patch adds support for using decimal values for $DIB_IMAGE_SIZE.
    This allows for creating images that are <1G in size.

    Change-Id: I945644a8e77fecfb0b83efa282dc00bb29514e0b
    Closes-Bug: #1366909