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Merge pull request #58 from northox/master

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Minor tidying.
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Axon 2015-11-24 04:15:16 +00:00
commit d1a69d4e57
1 changed files with 15 additions and 23 deletions
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38
configuration/managing-vm-kernel.md
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@ -9,14 +9,13 @@ redirect_from:
VM kernel managed by dom0
-------------------------
By default VM uses kernel provided by dom0. This means that:
1. You can select kernel version in VM settings
2. You can modify kernel options in VM settings
3. You can **not** modify any of above from inside of VM
4. Installing additional kernel modules in cumbersome
By default VMs kernels are provided by dom0. This means that:
1. You can select kernel version in VM settings;
2. You can modify kernel options in VM settings;
3. You can **not** modify any of above from inside of VM;
4. Installing additional kernel modules in cumbersome.
To select which kernel given VM will use, you can use either Qubes Manager (VM
settings, advanced tab), or `qvm-prefs` tool:
To select which kernel a given VM will use, you can use either use Qubes Manager (VM settings, advanced tab), or `qvm-prefs` tool:
~~~
[user@dom0 ~]$ qvm-prefs my-appvm -s kernel
@ -33,7 +32,7 @@ Possible values:
[user@dom0 ~]$ qvm-prefs my-appvm -s kernel default
~~~
To check/change default kernel you can go either to "Global settings" in Qubes Manager, or use `qubes-prefs` tool:
To check/change the default kernel you can go either to "Global settings" in Qubes Manager, or use `qubes-prefs` tool:
~~~
[user@dom0 ~]$ qubes-prefs
@ -49,7 +48,7 @@ updatevm : sys-firewall
Installing different kernel using Qubes kernel package
==================================
Kernel for VM is packages by Qubes team in `kernel-qubes-vm` packages. Generally system will keep 3 newest available versions. You can list them with simple `rpm` command:
VM kernels are packages by Qubes team in `kernel-qubes-vm` packages. Generally system will keep the 3 newest available versions. You can list them with the `rpm` command:
~~~
[user@dom0 ~]$ rpm -qa 'kernel-qubes-vm*'
@ -58,15 +57,13 @@ kernel-qubes-vm-3.18.16-3.pvops.qubes.x86_64
kernel-qubes-vm-3.18.17-4.pvops.qubes.x86_64
~~~
If you want more recent version (but not so tested), you can check
`qubes-dom0-unstable` repository - Qubes team put there such packages. Keep in
mind that those packages (as the name suggests) may be less stable than the
default one.
If you want more recent version, you can check `qubes-dom0-unstable` repository. As the name suggest, keep in
mind that those packages may be less stable than the default ones.
Checking available versions in `qubes-dom0-unstable` repository:
~~~
[marmarek@dom0 ~]$ sudo qubes-dom0-update --enablerepo=qubes-dom0-unstable --action=list kernel-qubes-vm
[user@dom0 ~]$ sudo qubes-dom0-update --enablerepo=qubes-dom0-unstable --action=list kernel-qubes-vm
Using sys-firewall as UpdateVM to download updates for Dom0; this may take some time...
Running command on VM: 'sys-firewall'...
Loaded plugins: langpacks, post-transaction-actions, yum-qubes-hooks
@ -87,7 +84,7 @@ kernel-qubes-vm.x86_64 1000:3.18.17-4.pvops.qubes @qubes-dom0-cached
Installing new version from `qubes-dom0-unstable` repository:
~~~
[marmarek@dom0 ~]$ sudo qubes-dom0-update --enablerepo=qubes-dom0-unstable kernel-qubes-vm
[user@dom0 ~]$ sudo qubes-dom0-update --enablerepo=qubes-dom0-unstable kernel-qubes-vm
Using sys-firewall as UpdateVM to download updates for Dom0; this may take some time...
Running command on VM: 'sys-firewall'...
Loaded plugins: langpacks, post-transaction-actions, yum-qubes-hooks
@ -132,9 +129,7 @@ Complete!
[marmarek@dom0 ~]$
~~~
In above example it tries to remove 3.18.10-2.pvops.qubes kernel (to keep only
3 installed), but since some VM uses it, it fails. Installation of new
package is unaffected by this event.
In the above example, it tries to remove 3.18.10-2.pvops.qubes kernel (to keep only 3 installed), but since some VM uses it, it fails. Installation of new package is unaffected by this event.
The newly installed package is set as default VM kernel.
@ -206,7 +201,6 @@ mke2fs 1.42.12 (29-Aug-2014)
--> Done.
~~~
Using kernel installed in the VM
================================
@ -311,8 +305,6 @@ In case of problems, you can access VM console (using `sudo xl console VMNAME` i
GRUB menu. You need to call it just after starting VM (until `GRUB_TIMEOUT`
expires) - for example in separate dom0 terminal window.
In any case you can later access VM logs (especially VM console log
(`guest-VMNAME.log`). You can always set kernel back to some
dom0-provided value to fix VM kernel
installation.
In any case you can later access VM logs (especially VM console log (`guest-VMNAME.log`).
You can always set kernel back to some dom0-provided value to fix VM kernel installation.