mirror of
https://github.com/QubesOS/qubes-doc.git
synced 2024-10-01 01:25:40 -04:00
48 lines
1.8 KiB
Markdown
48 lines
1.8 KiB
Markdown
---
|
|
layout: doc
|
|
title: Out of Memory
|
|
permalink: /doc/out-of-memory/
|
|
redirect_from:
|
|
- /en/doc/out-of-memory/
|
|
- /doc/OutOfmemory/
|
|
- /wiki/OutOfmemory/
|
|
---
|
|
|
|
VMs (especially templates) use pre-allocated space. The default private storage max size is 2 GB, but it's very easy to increase as needed. If the disk is completely full, you will get an `Out of disk space` error that may crash your system because Dom0 does not have enough disk space to work. So it's good practice to regularly check disk space usage with the command `df -h` in dom0 terminal.
|
|
|
|
A system that's out of space should be able to boot, but may be unable to load a desktop manager. In this case it is possible to login to dom0 terminal with Alt + Ctrl + F2. To recover disk space it may be possible to delete files in a userVM by connecting to the userVM terminal:
|
|
|
|
~~~
|
|
qvm-start <VMname>
|
|
sudo xl console <VMname>
|
|
~~~
|
|
|
|
If this does not work, check the size of /var/lib/qubes/qubes.xml. If it is zero, you'll need to use one of the file backup (stored in /var/lib/qubes/backup), hopefully you have the current data there. Find the most recent one and place in /var/lib/qubes/qubes.xml instead of the empty file.
|
|
|
|
In any case you'll need some disk space to start the VM. Check `df -h` output if you have some. If not, some hints how to free some disk space:
|
|
|
|
1. Clean yum cache:
|
|
|
|
~~~
|
|
sudo yum clean all
|
|
~~~
|
|
|
|
1. Delete .img files of a less important VM, that can be found in
|
|
|
|
/var/lib/qubes/appvms/. Then, when the system is working again, cleanup the rest with:
|
|
|
|
~~~
|
|
qvm-remove <VMname>
|
|
~~~
|
|
|
|
With this method you lose the data of one VM, but it'll work more reliably.
|
|
|
|
1. Decrease filesystem safety margin (5% by default):
|
|
|
|
~~~
|
|
sudo tune2fs -m 4 /dev/mapper/vg_dom0-lv_root
|
|
~~~
|
|
|
|
1. Remove some unneeded files in dom0 home (if you have any, most likely not).
|
|
|