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Update reference to qvm-trim-template for R4+

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Fixes QubesOS/qubes-issues#5260
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Andrew David Wong 2019-08-31 19:38:15 -05:00
parent a9137e98cf
commit 40bcb530c0
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4 changed files with 19 additions and 76 deletions
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7
external/configuration-guides/tips-and-tricks.md vendored
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@ -53,10 +53,3 @@ This applies also to any TemplateBasedVM relative to its parent TemplateVM, but
Credit: [Joanna Rutkovska](https://twitter.com/rootkovska/status/832571372085850112)
Trim for standalone AppVMs
---------------------
The `qvm-trim-template` command is not available for a standalone AppVM.
It is still possible to trim the AppVM disks by using the `fstrim --all` command from the appvm.
You can also add the `discard` option to the mount line in `/etc/fstab` inside the standalone AppVM if you want trimming to be performed automatically, but there may be a performance impact on writes and deletes.

13
external/os-guides/pentesting/kali.md vendored
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@ -148,15 +148,9 @@ There are multiple ways to create a Kali Linux VM:
[user@kali ~]$ sudo apt-get dist-upgrade
[user@kali ~]$ sudo apt-get autoremove
8. Shutdown and trim `kali` template
8. Shut down `kali` template
- Shutdown `kali` template
[user@kali ~]$ sudo shutdown -h now
- In `dom0` console:
[user@dom0 ~]$ qvm-trim-template kali
[user@kali ~]$ sudo shutdown -h now
9. Start image
@ -285,10 +279,9 @@ These instructions will show you how to upgrade a Debian TemplateVM to Kali Linu
[user@kali-rolling ~]$ sudo apt-get dist-upgrade
[user@kali-rolling ~]$ sudo apt-get autoremove
9. Shut down and trim the new template.
9. Shut down the new template.
[user@dom0 ~]$ qvm-shutdown kali-rolling
[user@dom0 ~]$ qvm-trim-template kali-rolling
10. Ensure a terminal can be opened in the new template.

70
user/managing-os/debian/debian-upgrade-8-to-9.md
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@ -12,24 +12,18 @@ redirect_from:
Upgrading the Debian 8 Template
===============================
Please note that if you installed packages from one of the testing repositories you must make sure that the repository is enabled in `/etc/apt/sources.list.d/qubes-r3.list` before attempting the upgrade.
Please note that if you installed packages from one of the testing repositories you must make sure that the repository is enabled in `/etc/apt/sources.list.d/qubes-r4.list` before attempting the upgrade.
Otherwise, your upgrade will [break](https://github.com/QubesOS/qubes-issues/issues/2418).
Summary: Upgrading a Debian 8 Template to Debian 9
--------------------------------------------------
[user@dom0 ~]$ qvm-clone debian-8 debian-9
[user@dom0 ~]$ qvm-run -a debian-9 gnome-terminal
[user@debian-9 ~]$ sudo sed -i 's/jessie/stretch/g' /etc/apt/sources.list
[user@debian-9 ~]$ sudo sed -i 's/jessie/stretch/g' /etc/apt/sources.list.d/qubes-r3.list
[user@debian-9 ~]$ sudo apt-get update && sudo apt-get dist-upgrade -y
[user@debian-9 ~]$ sudo apt-get autoremove
(Shut down TemplateVM by any normal means.)
[user@dom0 ~]$ qvm-trim-template debian-9
(Done.)
[user@dom0 ~]$ qvm-clone debian-8 debian-9
[user@dom0 ~]$ qvm-run -a debian-9 gnome-terminal
[user@debian-9 ~]$ sudo sed -i 's/jessie/stretch/g' /etc/apt/sources.list
[user@debian-9 ~]$ sudo sed -i 's/jessie/stretch/g' /etc/apt/sources.list.d/qubes-r4.list
[user@debian-9 ~]$ sudo apt-get update && sudo apt-get dist-upgrade -y
[user@debian-9 ~]$ sudo apt-get autoremove
Detailed: Upgrading the Standard Debian 8 Template to Debian 9
--------------------------------------------------------------
@ -52,11 +46,11 @@ any template based on the standard Debian 8 template.
automatically update the files.)
[user@debian-9 ~]$ sudo sed -i 's/jessie/stretch/g' /etc/apt/sources.list
[user@debian-9 ~]$ sudo sed -i 's/jessie/stretch/g' /etc/apt/sources.list.d/qubes-r3.list
[user@debian-9 ~]$ sudo sed -i 's/jessie/stretch/g' /etc/apt/sources.list.d/qubes-r4.list
4. Update the package lists and upgrade to Debian 9. During the process,
it will likely prompt to overwrite two files, qubes-r3.list and
pulse/client.conf. qubes-r3.list can be overwritten, while pulse/client.conf
it will likely prompt to overwrite two files, qubes-r4.list and
pulse/client.conf. qubes-r4.list can be overwritten, while pulse/client.conf
need to left as the currently installed version.
[user@debian-9 ~]$ sudo apt-get update && sudo apt-get dist-upgrade -y
@ -69,50 +63,12 @@ any template based on the standard Debian 8 template.
[user@dom0 ~]$ qvm-shutdown debian-9
7. Trim the new template (see **Compacting the Upgraded Template** for details
and other options).
[user@dom0 ~]$ qvm-trim-template debian-9
8. (Recommended) [Switch everything that was set to the old template to the new
7. (Recommended) [Switch everything that was set to the old template to the new
template.](/doc/templates/#how-to-switch-templates)
9. (Optional) Remove the old default template.
8. (Optional) Remove the old default template.
[user@dom0 ~]$ sudo yum remove qubes-template-debian-8
Compacting the Upgraded Template
--------------------------------
Neither `fstrim` nor the `discard` mount option works on the TemplateVM's root
filesystem, so when a file is removed in the template, space is not freed in
dom0. This means that the template will use about twice as much space as is
really necessary after upgrading.
If you have at least `qubes-core-dom0-2.1.68` installed or are on Qubes R3.0,
you can use the `qvm-trim-template` tool:
[user@dom0 ~]$ qvm-trim-template debian-9
If you do not have `qubes-core-dom0-2.1.68` or are on older Qubes version, you can
compact the `root.img` manually. To do this, you will need about 15GB (the
TemplateVM's max size + the actually used space there) free space in dom0.
1. Start the template and fill all the free space with zeros, for example
with:
[user@debian-9 ~]$ dd if=/dev/zero of=/var/tmp/zero
2. Wait for the "No space left on device" error. Then:
[user@debian-9 ~]$ rm -f /var/tmp/zero
3. Shut down the template and all VMs based on it. Then:
[user@dom0 ~]$ cd /var/lib/qubes/vm-templates/debian-9
[user@dom0 ~]$ cp --sparse=always root.img root.img.new
[user@dom0 ~]$ mv root.img.new root.img
Additional Information
----------------------
@ -120,7 +76,7 @@ Additional Information
Debian Stretch packages were first made available in the Qubes R3.1 repositories.
If sound is not working, you may need to enable the Qubes testing repository to get the testing version of qubes-gui-agent.
This can be done by editing the /etc/apt/sources.list.d/qubes-r3.list file and uncommenting the Qubes Updates Candidates repo.
This can be done by editing the /etc/apt/sources.list.d/qubes-r4.list file and uncommenting the Qubes Updates Candidates repo.
User-initiated updates/upgrades may not run when a templateVM first starts.
This is due to a new Debian config setting that attempts to update automatically; it should be disabled with:

5
user/managing-os/templates.md
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@ -130,6 +130,7 @@ Rather, it must be updated individually from inside the StandaloneVM.
## Important Notes
* `qvm-trim-template` is not necessary. All VMs are created in a thin pool
and trimming is handled automatically. No user action is required.
* `qvm-trim-template` is no longer necessary or available in Qubes 4.0 and higher.
All VMs are created in a thin pool and trimming is handled automatically.
No user action is required.