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FedoraTemplateUpgrade20: Improve instructions

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* Revise imprecise parts of instructions
 * Add summaries of instructions
 * Add section on known issues
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Axon 2015-06-23 10:40:25 +00:00
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FedoraTemplateUpgrade20.md
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@ -17,61 +17,114 @@ template based on the standard Fedora 20 template.
1. Clone the existing template and start a terminal in the new template.
[user@dom0 ~] qvm-clone fedora-20-x64 fedora-21
[user@dom0 ~] qvm-run -a fedora-21 gnome-terminal
[user@dom0 ~]$ qvm-clone fedora-20-x64 fedora-21
[user@dom0 ~]$ qvm-run -a fedora-21 gnome-terminal
2. Attempt the upgrade process in the new template.
[user@fedora-21 ~] sudo yum erase nautilus-actions libcacard
[user@fedora-21 ~] sudo yum clean all
[user@fedora-21 ~] sudo yum --releasever=21 distro-sync
[user@fedora-21 ~] sudo cp /usr/lib/qubes/init/ip* /etc/sysconfig/
[user@fedora-21 ~] poweroff
[user@fedora-21 ~]$ sudo yum erase nautilus-actions libcacard
[user@fedora-21 ~]$ sudo yum clean all
[user@fedora-21 ~]$ sudo yum --releasever=21 distro-sync
[user@fedora-21 ~]$ sudo cp /usr/lib/qubes/init/ip* /etc/sysconfig/
If you encounter no errors, proceed to step 5.
(Poweroff via Qubes VM Manager. May need to be killed.)
If you encounter no errors, proceed to step 6.
3. If `yum` reports that you do not have enough free disk space to proceed with
the upgrade process, create an empty file in dom0 to use as a cache and
attach it to the template as a virtual disk.
[user@dom0 ~] truncate -s 5GB /var/tmp/template-upgrade-cache.img
[user@dom0 ~] qvm-block -A fedora-21 dom0:/var/tmp/template-upgrade-cache.img
[user@dom0 ~]$ truncate -s 5GB /var/tmp/template-upgrade-cache.img
[user@dom0 ~]$ qvm-block -A fedora-21 dom0:/var/tmp/template-upgrade-cache.img
Then reattempt the upgrade process, but this time using the virtual disk as
a cache.
[user@fedora-21 ~] sudo mkfs.ext4 /dev/xvdi
[user@fedora-21 ~] sudo mount /dev/xvdi /mnt/removable
[user@fedora-21 ~] sudo yum erase nautilus-actions libcacard
[user@fedora-21 ~] sudo yum clean all
[user@fedora-21 ~] sudo yum --releasever=21 --setopt=cachedir=/mnt/removable distro-sync
[user@fedora-21 ~] sudo cp /usr/lib/qubes/init/ip* /etc/sysconfig/
[user@fedora-21 ~] poweroff
[user@fedora-21 ~]$ sudo mkfs.ext4 /dev/xvdi
[user@fedora-21 ~]$ sudo mount /dev/xvdi /mnt/removable
[user@fedora-21 ~]$ sudo yum erase nautilus-actions libcacard
[user@fedora-21 ~]$ sudo yum clean all
[user@fedora-21 ~]$ sudo yum --releasever=21 --setopt=cachedir=/mnt/removable distro-sync
[user@fedora-21 ~]$ sudo cp /usr/lib/qubes/init/ip* /etc/sysconfig/
(Poweroff via Qubes VM Manager. May need to be killed.)
4. If `yum` complains that there is not enough free space in `/usr/lib/modules`,
do this before reattempting the upgrade:
[user@fedora-21 ~] sudo mkdir /mnt/removable/modules
[user@fedora-21 ~] sudo cp -rp /usr/lib/modules /mnt/removable/modules
[user@fedora-21 ~] sudo mount --bind /mnt/removable/modules /usr/lib/modules
[user@fedora-21 ~]$ sudo mkdir /mnt/removable/modules
[user@fedora-21 ~]$ sudo cp -rp /usr/lib/modules /mnt/removable/modules
[user@fedora-21 ~]$ sudo mount --bind /mnt/removable/modules /usr/lib/modules
5. After the upgrade process is finished, remove the cache file you created.
[user@dom0 ~] rm /var/tmp/template-upgrade-cache.img
[user@dom0 ~]$ rm /var/tmp/template-upgrade-cache.img
6. Ensure your new template is fully updated.
[user@dom0 ~] qvm-run -a fedora-21 gnome-terminal
[user@fedora-21 ~] sudo yum update
[user@dom0 ~]$ qvm-run -a fedora-21 gnome-terminal
[user@fedora-21 ~]$ sudo yum -y update
Summary of Full Procedure (Full)
--------------------------------
[user@dom0 ~]$ qvm-clone fedora-20-x64 fedora-21
[user@dom0 ~]$ truncate -s 5GB /var/tmp/template-upgrade-cache.img
[user@dom0 ~]$ qvm-run -a fedora-21 gnome-terminal
[user@dom0 ~]$ qvm-block -A fedora-21 dom0:/var/tmp/template-upgrade-cache.img
[user@fedora-21 ~]$ sudo mkfs.ext4 /dev/xvdi
[user@fedora-21 ~]$ sudo mount /dev/xvdi /mnt/removable
[user@fedora-21 ~]$ sudo mkdir /mnt/removable/modules
[user@fedora-21 ~]$ sudo cp -rp /usr/lib/modules /mnt/removable/modules
[user@fedora-21 ~]$ sudo mount --bind /mnt/removable/modules /usr/lib/modules
[user@fedora-21 ~]$ sudo yum erase nautilus-actions libcacard
[user@fedora-21 ~]$ sudo yum clean all
[user@fedora-21 ~]$ sudo yum --releasever=21 --setopt=cachedir=/mnt/removable distro-sync
[user@fedora-21 ~]$ sudo cp /usr/lib/qubes/init/ip* /etc/sysconfig/
(Poweroff via Qubes VM Manager. May need to be killed.)
[user@dom0 ~]$ rm /var/tmp/template-upgrade-cache.img
[user@dom0 ~]$ qvm-run -a fedora-21 gnome-terminal
[user@fedora-21 ~]$ sudo yum -y update
Upgrading the Minimal Fedora 20 Template to Fedora 21
-----------------------------------------------------
The procedure for upgrading the minimal template (or any template based on the
minimal template) is the same as the procedure for the standard template above,
**except with the following command ommitted**:
**with the following exceptions**:
1. `gnome-terminal` is not installed by default. Unless you installed it (or
another terminal emulator), use `xterm`.
2. `nautilus-actions` and `libcacard` are not installed by default, so do not
try to erase them (unless you installed them).
3. `sudo` is not installed by default, so use `su` unless you've installed the
former.
Summary of Full Procedure (Minimal)
-----------------------------------
[user@dom0 ~]$ qvm-clone fedora-20-x64-minimal fedora-21-minimal
[user@dom0 ~]$ qvm-run -a fedora-21-minimal xterm
[user@fedora-21-minimal ~]$ su -
[root@fedora-21-minimal ~]# yum clean all
[user@fedora-21-minimal ~]# yum --releasever=21 distro-sync
[user@fedora-21-minimal ~]# cp /usr/lib/qubes/init/ip* /etc/sysconfig/
(Poweroff via Qubes VM Manager. May need to be killed.)
[user@dom0 ~]$ qvm-run -a fedora-21-minimal xterm
[user@fedora-21-minimal ~]$ su -
[root@fedora-21-minimal ~]# yum -y update
(If you encounter insufficient space issues, you may need to use the methods
described for the standard template above.)
[user@fedora-21-minimal ~] sudo yum erase nautilus-actions libcacard
Compacting the Upgraded Template
================================
@ -104,3 +157,30 @@ TemplateVM's max size + the actually used space there) free space in dom0.
[user@dom0 ~] cd /var/lib/qubes/vm-templates/fedora-21
[user@dom0 ~] cp --sparse=always root.img root.img.new
[user@dom0 ~] mv root.img.new root.img
Known Issues
============
You may encounter the following `yum` error:
At least X MB more space needed on the / filesystem.
In this case, you have a few options:
1. Delete files in order to free up space. One way to do this is by
uninstalling packages (and then reinstalling them again after you finish
the upgrade process, if desired).
2. Increase the `root.img` size. It should be easy to extend the
`qvm-grow-root` tool in order to support PV (and not only HVM) VMs.
However, someone would need to do this (patches welcome).
3. Do the upgrade in parts, e.g., by using package groups. (First upgrade
`@core` packages, then the rest.)
4. Do not perform an in-place upgrade. Instead, simply download and install a
new template package, then redo all desired template modifications.
Here are some useful messages from the mailing list in regard to the last
option:
* [Marek](https://groups.google.com/d/msg/qubes-users/mCXkxlACILQ/dS1jbLRP9n8J)
* [Jason M](https://groups.google.com/d/msg/qubes-users/mCXkxlACILQ/5PxDfI-RKAsJ)