Your custom image is likely missing the virtIO drivers that the cloud image has.
Instead of running through the DVD installer, I'd suggest checking out diskimage-builder to make custom images for use on Openstack. On Tue, Aug 1, 2017 at 10:16 AM Paras pradhan <pradhanpa...@gmail.com> wrote: > Also this is what I've noticed with the centos cloud image I downloaded. > If I add few packages( around a GB), the sizes goes up to 8GB from 1.3 GB. > Running dd if=/dev/zero of=temp;sync;rm temp failed due to the size of > the disk on the cloud images which is 10G. zeroing failed with No space > left on device. Any other options? > > Thanks > Paras. > > On Tue, Aug 1, 2017 at 9:43 AM, Paras pradhan <pradhanpa...@gmail.com> > wrote: > >> I ran virt-sparsify. So before running virt-sparsify it was 6.0GB and >> after it is 1.3GB. >> >> Thanks >> Paras. >> >> On Tue, Aug 1, 2017 at 2:53 AM, Tomáš Vondra <von...@homeatcloud.cz> >> wrote: >> >>> Hi! >>> >>> How big are the actual image files? Because qcow2 is a sparse format, it >>> does not store zeroes. If the free space in one image is zeroed out, it >>> will convert much faster. If that is the problem, use „dd if=/dev/zero >>> of=temp;sync;rm temp“ or zerofree. >>> >>> Tomas >>> >>> >>> >>> *From:* Paras pradhan [mailto:pradhanpa...@gmail.com] >>> *Sent:* Monday, July 31, 2017 11:54 PM >>> *To:* openstack-operators@lists.openstack.org >>> *Subject:* [Openstack-operators] custom build image is slow >>> >>> >>> >>> Hello >>> >>> >>> >>> I have two qcow2 images uploaded to glance. One is CentOS 7 cloud image >>> downloaded from centos.org. The other one is custom built using CentOS >>> 7.DVD. When I create cinder volumes from them, volume creation from the >>> custom built image it is very very slow. >>> >>> >>> >>> >>> >>> CenOS qcow2: >>> >>> >>> >>> 2017-07-31 21:42:44.287 881609 INFO cinder.image.image_utils >>> [req-ea2d7b12-ae9e-45b2-8b4b-ea8465497d5a >>> e090e605170a778610438bfabad7aa7764d0a77ef520ae392e2b59074c9f88cf >>> 490910c1d4e1486d8e3a62d7c0ae698e - d67a18e70dd9467db25b74d33feaad6d >>> default] *Converted 8192.00 MB image at 253.19 MB/s* >>> >>> >>> >>> Custom built qcow2: >>> >>> INFO cinder.image.image_utils [req-032292d8-1500-474d-95c7-2e8424e2b864 >>> e090e605170a778610438bfabad7aa7764d0a77ef520ae392e2b59074c9f88cf >>> 490910c1d4e1486d8e3a62d7c0ae698e - d67a18e70dd9467db25b74d33feaad6d >>> default] *Converted 10240.00 MB image at 32.22 MB/s* >>> >>> >>> >>> I used the following command to create the qcow2 file >>> >>> qemu-img create -f qcow2 custom.qcow2 10G >>> >>> >>> >>> What am I missing ? >>> >>> >>> >>> Thanks >>> Paras. >>> >>> >>> >>> >>> >> >> > _______________________________________________ > OpenStack-operators mailing list > OpenStack-operators@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators >
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