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226 lines
9.3 KiB
Markdown
226 lines
9.3 KiB
Markdown
---
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layout: doc
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title: Upgrading the Fedora 20 Template to Fedora 21
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permalink: /doc/template/fedora/upgrade-20-to-21/
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redirect_from:
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- /doc/fedora-template-upgrade-20/
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- /en/doc/fedora-template-upgrade-20/
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- /doc/FedoraTemplateUpgrade20/
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- /wiki/FedoraTemplateUpgrade20/
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---
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Upgrading the Fedora 20 Template
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================================
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Summary: Upgrading the Standard Fedora 20 Template to Fedora 21
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---------------------------------------------------------------
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[user@dom0 ~]$ qvm-clone fedora-20-x64 fedora-21
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[user@dom0 ~]$ truncate -s 5GB /var/tmp/template-upgrade-cache.img
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[user@dom0 ~]$ qvm-run -a fedora-21 gnome-terminal
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[user@dom0 ~]$ qvm-block -A fedora-21 dom0:/var/tmp/template-upgrade-cache.img
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[user@fedora-21 ~]$ sudo mkfs.ext4 /dev/xvdi
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[user@fedora-21 ~]$ sudo mount /dev/xvdi /mnt/removable
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[user@fedora-21 ~]$ sudo mkdir /mnt/removable/modules
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[user@fedora-21 ~]$ sudo cp -rp /usr/lib/modules /mnt/removable/modules
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[user@fedora-21 ~]$ sudo mount --bind /mnt/removable/modules /usr/lib/modules
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[user@fedora-21 ~]$ sudo yum erase nautilus-actions libcacard
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[user@fedora-21 ~]$ sudo yum clean all
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[user@fedora-21 ~]$ sudo yum --releasever=21 --setopt=cachedir=/mnt/removable distro-sync
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[user@fedora-21 ~]$ sudo cp /usr/lib/qubes/init/ip* /etc/sysconfig/
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(Shut down TemplateVM via Qubes VM Manager; may need to be killed.)
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[user@dom0 ~]$ rm /var/tmp/template-upgrade-cache.img
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[user@dom0 ~]$ qvm-run -a fedora-21 gnome-terminal
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[user@fedora-21 ~]$ sudo yum -y update
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(Shut down TemplateVM by any normal means.)
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[user@dom0 ~]$ qvm-trim-template fedora-21
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Detailed: Upgrading the Standard Fedora 20 Template to Fedora 21
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----------------------------------------------------------------
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These instructions will show you how to upgrade the standard Fedora 20
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TemplateVM to Fedora 21. The same general procedure may be used to upgrade any
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template based on the standard Fedora 20 template.
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1. Clone the existing template and start a terminal in the new template.
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[user@dom0 ~]$ qvm-clone fedora-20-x64 fedora-21
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[user@dom0 ~]$ qvm-run -a fedora-21 gnome-terminal
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2. Attempt the upgrade process in the new template.
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[user@fedora-21 ~]$ sudo yum erase nautilus-actions libcacard
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[user@fedora-21 ~]$ sudo yum clean all
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[user@fedora-21 ~]$ sudo yum --releasever=21 distro-sync
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[user@fedora-21 ~]$ sudo cp /usr/lib/qubes/init/ip* /etc/sysconfig/
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(Shut down TemplateVM via Qubes VM Manager; may need to be killed.)
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If you encounter no errors, proceed to step 7.
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3. If `yum` reports that you do not have enough free disk space to proceed with
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the upgrade process, create an empty file in dom0 to use as a cache and
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attach it to the template as a virtual disk.
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[user@dom0 ~]$ truncate -s 5GB /var/tmp/template-upgrade-cache.img
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[user@dom0 ~]$ qvm-block -A fedora-21 dom0:/var/tmp/template-upgrade-cache.img
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Then reattempt the upgrade process, but this time using the virtual disk as
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a cache.
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[user@fedora-21 ~]$ sudo mkfs.ext4 /dev/xvdi
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[user@fedora-21 ~]$ sudo mount /dev/xvdi /mnt/removable
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[user@fedora-21 ~]$ sudo yum erase nautilus-actions libcacard
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[user@fedora-21 ~]$ sudo yum clean all
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[user@fedora-21 ~]$ sudo yum --releasever=21 --setopt=cachedir=/mnt/removable distro-sync
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[user@fedora-21 ~]$ sudo cp /usr/lib/qubes/init/ip* /etc/sysconfig/
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(Poweroff via Qubes VM Manager. May need to be killed.)
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4. If `yum` complains that there is not enough free space in `/usr/lib/modules`,
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do this before reattempting the upgrade:
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[user@fedora-21 ~]$ sudo mkdir /mnt/removable/modules
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[user@fedora-21 ~]$ sudo cp -rp /usr/lib/modules /mnt/removable/modules
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[user@fedora-21 ~]$ sudo mount --bind /mnt/removable/modules /usr/lib/modules
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5. `yum` may complain:
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At least X MB more space needed on the / filesystem.
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In this case, one option is to [resize the TemplateVM's disk
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image](/doc/ResizeDiskImage/) before reattempting the upgrade process.
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(See **Additional Information** below for other options.)
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6. After the upgrade process is finished, remove the cache file, if you
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created one.
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[user@dom0 ~]$ rm /var/tmp/template-upgrade-cache.img
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7. Ensure your new template is fully updated.
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[user@dom0 ~]$ qvm-run -a fedora-21 gnome-terminal
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[user@fedora-21 ~]$ sudo yum -y update
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8. Trim the new template (see **Compacting the Upgraded Template** for details
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and other options).
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[user@dom0 ~]$ qvm-trim-template fedora-21
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9. (Optional) Remove the old default template.
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[user@dom0 ~]$ sudo yum remove qubes-template-fedora-20-x64
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Summary: Upgrading the Minimal Fedora 20 Template to Fedora 21
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--------------------------------------------------------------
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[user@dom0 ~]$ qvm-clone fedora-20-x64-minimal fedora-21-minimal
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[user@dom0 ~]$ qvm-run -a fedora-21-minimal xterm
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[user@fedora-21-minimal ~]$ su -
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[root@fedora-21-minimal ~]# yum clean all
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[user@fedora-21-minimal ~]# yum --releasever=21 distro-sync
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[user@fedora-21-minimal ~]# cp /usr/lib/qubes/init/ip* /etc/sysconfig/
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(Shut down the TemplateVM via Qubes VM Manager. May need to be killed.)
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[user@dom0 ~]$ qvm-run -a fedora-21-minimal xterm
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[user@fedora-21-minimal ~]$ su -
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[root@fedora-21-minimal ~]# yum -y update
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(Shut down TemplateVM by any normal means.)
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[user@dom0 ~]$ qvm-trim-template fedora-21-minimal
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(If you encounter insufficient space issues, you may need to use the methods
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described for the standard template above.)
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Differences Between the Standard and Minimal Upgrade Procedures
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---------------------------------------------------------------
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The procedure for upgrading the minimal template (or any template based on the
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minimal template) is the same as the procedure for the standard template above,
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**with the following exceptions**:
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1. `gnome-terminal` is not installed by default. Unless you've installed it
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(or another terminal emulator), use `xterm`. (Of course, you can also use
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`xterm` for the standard template, if you prefer.)
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2. `nautilus-actions` and `libcacard` are not installed by default, so do not
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try to erase them (unless you've installed them).
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3. `sudo` is not installed by default. Unless you've installed it, use `su` as
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demonstrated above. (Of course, you can also use `su` for the standard
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template, if you prefer.)
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Compacting the Upgraded Template
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--------------------------------
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Neither `fstrim` nor the `discard` mount option works on the TemplateVM's root
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filesystem, so when a file is removed in the template, space is not freed in
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dom0. This means that the template will use about twice as much space as is
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really necessary after upgrading.
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If you have at least `qubes-core-dom0-2.1.68` installed and are on Qubes R2,
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you can use the `qvm-trim-template` tool:
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[user@dom0 ~]$ qvm-trim-template fedora-21
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If you do not have `qubes-core-dom0-2.1.68` or are on Qubes R3-rc1, you can
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compact the `root.img` manually. To do this, you will need about 15GB (the
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TemplateVM's max size + the actually used space there) free space in dom0.
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1. Start the template and fill all the free space with zeros, for example
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with:
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[user@fedora-21 ~]$ dd if=/dev/zero of=/var/tmp/zero
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2. Wait for the "No space left on device" error. Then:
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[user@fedora-21 ~]$ rm -f /var/tmp/zero
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3. Shut down the template and all VMs based on it. Then:
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[user@dom0 ~]$ cd /var/lib/qubes/vm-templates/fedora-21
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[user@dom0 ~]$ cp --sparse=always root.img root.img.new
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[user@dom0 ~]$ mv root.img.new root.img
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Additional Information
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----------------------
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As mentioned above, you may encounter the following `yum` error:
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At least X MB more space needed on the / filesystem.
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In this case, you have several options:
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1. [Increase the TemplateVM's disk image size](/doc/resize-disk-image/).
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This is the solution mentioned in the main instructions above.
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2. Delete files in order to free up space. One way to do this is by
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uninstalling packages. You may then reinstall them again after you
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finish the upgrade process, if desired). However, you may end up having to
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increase the disk image size anyway (see previous option).
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3. Increase the `root.img` size with `qvm-grow-root`. It should be easy to
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extend the `qvm-grow-root` tool in order to support PV (and not only HVM)
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VMs. However, someone would need to do this (patches welcome).
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4. Do the upgrade in parts, e.g., by using package groups. (First upgrade
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`@core` packages, then the rest.)
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5. Do not perform an in-place upgrade. Instead, simply download and install a
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new template package, then redo all desired template modifications.
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With regard to the last option, here are some useful messages from the mailing
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list which also apply to TemplateVM management and migration in general:
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* [Marek](https://groups.google.com/d/msg/qubes-users/mCXkxlACILQ/dS1jbLRP9n8J)
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* [Jason M](https://groups.google.com/d/msg/qubes-users/mCXkxlACILQ/5PxDfI-RKAsJ)
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Known issues with Fedora 21
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---------------------------
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* [The "Update VM" command in Qubes Manager does not work](https://github.com/QubesOS/qubes-issues/issues/982).
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