Hey Pavel, The reason why I mentioned it is that in the ansible ovirt_disk module it is explained if cow format is used, sparse is true by default. This is scenario I used to create disk in oVIrt with Centos and Ubuntu cloud images attached. The main difference is that with CentOS images the disk size (in my case 40GB) is recognized by OS and cloud-init grows partition to full size of the disk. With Ubuntu, its not recognized by OS, disk is sized to 40GB, so cloud-init reports “nothing to do”.
I will run the tests, so we can verify if it will make a difference if sparse is set to True specifically or if it help pre-allocating the disk, if deploying Ubuntu cloud image. Considering that format for both CentOS and Ubuntu cloud images is qcow2 or 3, I would expect it does not matter to the ovirt_disk module when resizing. Or maybe better question is why does not Ubuntu OS recognize the new disk size? Ultimately, in oVirt UI correct disk size is reported, but in Ubuntu OS is not. My 5cents As soon as tests are done, I will provide results. Kindly awaiting your reply. — — — Met vriendelijke groet / Kind regards, Marko Vrgotic From: Pavel Bar <[email protected]> Date: Tuesday, 16 July 2019 at 11:01 To: "Vrgotic, Marko" <[email protected]> Cc: Ondra Machacek <[email protected]>, "[email protected]" <[email protected]> Subject: Re: [ovirt-users] Re: ovirt_disk and ubuntu issues Hi, What actually defines whether the disk is thin-provisioned or pre-allocated is the "sparse" flag. If you want the pre-allocated disk - the "sparse" flag should be set to false. If you want the thin-provisioned disk - the "sparse" flag should be set to true. Try to set the "sparse" flag to whatever scenario you are testing and send the results. Thank you in advance! Pavel On Mon, Jul 15, 2019 at 12:04 PM Vrgotic, Marko <[email protected]<mailto:[email protected]>> wrote: Hey Pavel, As far as I remember, I went with Ansible ovirt_vm and ovrit_disk defaults. I will double check. “format: cow” which would mean thin-provisioned. I have all prepared so I can make quick test with all scenarios: 1. format: cow 2. format: raw 3. format: cow and sparse: false(no) 4. …. Let me know. — — — Met vriendelijke groet / Kind regards, Marko Vrgotic From: Pavel Bar <[email protected]<mailto:[email protected]>> Date: Monday, 15 July 2019 at 10:20 To: "Vrgotic, Marko" <[email protected]<mailto:[email protected]>>, Ondra Machacek <[email protected]<mailto:[email protected]>> Cc: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [ovirt-users] Re: ovirt_disk and ubuntu issues Good day Marko, Can you please tell us whether you tried to create a pre-allocated or thin-provision disk? Ondra, can you please take a look that is not an Ansible issue? Thank you in advance! Pavel On Mon, Jul 15, 2019 at 12:29 AM Vrgotic, Marko <[email protected]<mailto:[email protected]>> wrote: Dear oVIrt, Even though I would like to get some insight into what could be reason this is no working, I did find a workaround: Instead of trying to get Ubuntu disk specified with ovirt_disk size, I used qemu-img resize to increase the disk size before importing it to oVIrt. This works, but it still going to present the problem if User eventually wants to increase for example disk from 40GBto 80GB. Kindly awaiting your reply. — — — Met vriendelijke groet / Kind regards, Marko Vrgotic Sr. System Engineer @ System Administration [email protected]<mailto:[email protected]> From: "Vrgotic, Marko" <[email protected]<mailto:[email protected]>> Date: Wednesday, 10 July 2019 at 16:19 To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: ovirt_disk and ubuntu issues Dear oVirt, I am downloading the ubuntu cloud image 16.04 and or 18.04: - name: "Download base cloud image from server" get_url: url: "{{ image_url }}" checksum: "sha256:{{ image_checksum }}" validate_certs: yes dest: "/tmp/{{ inventory_hostname_short }}.qcow2" delegate_to: localhost creating a 40GB HDD and attaching image to it: - name: "Create oVirt disk with base image (with 40Gb allocated)" ovirt_disk: name: "{{ inventory_hostname_short }}" interface: virtio size: 40GiB format: cow upload_image_path: "/tmp/{{ inventory_hostname_short }}.qcow2" storage_domain: ovirt_production wait: true delegate_to: localhost creating VM afterwards: - name: "Create new Ubuntu VMs from cloud image" delegate_to: localhost ovirt_vm: auth: "{{ ovirt_auth }}" name: "{{ inventory_hostname_short }}" disks: - name: "{{ inventory_hostname_short }}" graphical_console: protocol: vnc serial_console: true usb_support: true soundcard_enabled: false operating_system: "{{ operating_system_type }}" type: server nics: - name: nic1 profile_name: tenant1 interface: virtio nic_on_boot: true cloud_init: host_name: "{{ inventory_hostname }}" user_name: ubuntu authorized_ssh_keys: "{{ ssh_agent_pubkeys.stdout }}" state: "running" cluster: "{{ ovirt_cluster }}" when: inventory_hostname in groups['ubuntu-baker'] When VM gets created, I can see in oVIrt VM details disk created is 40GB. Executing df -h, gives me following: root@av3-ubuntu-18-base:/home/ubuntu# df -h Filesystem Size Used Avail Use% Mounted on udev 447M 0 447M 0% /dev tmpfs 92M 696K 92M 1% /run /dev/vda1 2.0G 1.3G 706M 65% / tmpfs 460M 0 460M 0% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 460M 0 460M 0% /sys/fs/cgroup /dev/vda15 105M 3.6M 101M 4% /boot/efi tmpfs 92M 0 92M 0% /run/user/1000 Initially I thought growpart or resize2fs is not triggered, but then running dmesg or fdisk /dev/vda, told me that physical disk size is still only size of the downloaded ubuntu cloud image. Disk /dev/vda: 2.2 GiB, 2361393152 bytes, 4612096 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Is this related to ovirt_disk module, or ubuntu and ovirt_disk, since I do not have this behavior with CentOS 7 images? Can you advise how to proceed, in case I am missing some configuration parameter or command to be run? The following Ubuntu images are used: ubuntu-16: image_url=https://cloud-images.ubuntu.com/xenial/current/xenial-server-cloudimg-amd64-disk1.img image_checksum=fda868058586b129c7fdb6472fe575e911f7c67551a6dc75966f2ec02201bdae ubuntu-18: image_url=https://cloud-images.ubuntu.com/bionic/current/bionic-server-cloudimg-amd64.img image_checksum=7d2b90022a169119d7726c0fefa1713acbead7cc36d282c879896fd89c5a6663 Kindly awaiting your reply. — — — Met vriendelijke groet / Kind regards, Marko Vrgotic Sr. System Engineer @ System Administration [email protected]<mailto:[email protected]> tel. +31 (0)35 677 4131 _______________________________________________ Users mailing list -- [email protected]<mailto:[email protected]> To unsubscribe send an email to [email protected]<mailto:[email protected]> Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/[email protected]/message/VRLKCMREVCTEWRO4SUCGYA6VETEI726F/
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