Private vol disk usage greater than df /rw

n81XhRhm · November 5, 2024, 1:42am

After transplanting a whonix app qube from Qubes 4.1 to 4.2, disk usage for the private volume vm-qubename-private, as reported by “sudo lvs” or Qubes Disk Space Monitor in dom0, seems to be growing faster than disk is being used within the /rw mount point within the vm, as reported by Use% from “df /rw” within the VM.

“sudo lvs” within dom0 shows 90.99% for Data% for vm-qubename-private

“df /rw” run within qube shows 62% for Use%

Since transplanting I have resized the volume via the “Private storage max size” setting in Qube Manager multiple times but each time it’s not long before Qubes Disk Space Monitor starts showing warnings that this qube is running out of space.

Any ideas on an explanation for what appears to me to be a discrepancy in the disk usage as reported by LVM Tools in dom0 vs “df” in the app qube itself?

Thanks in advance!

apparatus · November 5, 2024, 6:15am

github.com/QubesOS/qubes-issues

Disk usage numbers in Qube Manager are deceptive

opened 05:27PM - 31 May 22 UTC

ddevz

T: bug C: manager/widget ux P: default needs diagnosis affects-4.1

[How to file a helpful issue](https://www.qubes-os.org/doc/issue-tracking/) #…## Qubes OS release 4.1 ### Brief summary After the Qubes storage widget tells a user they are low on disk space, one can try to free up space by deleting qubes from the Qube Manager. However, the disk space listed under "Disk Usage" is not always the amount that becomes free if you delete that qube. (particularly templates) I suspect this is related to "cloning" a template making a copy-on write copy of the template instead of a full copy of the data (which is a good thing, but it makes it confusing for the user to try to understand how to free space) There is also the confusing factor that certain deleted disk space only shows up as free in the Qube storage widget after a reboot.

rustybird · November 5, 2024, 12:37pm

Does running sudo fstrim /rw in the qube and then shutting down the qube make a difference?

n81XhRhm · November 5, 2024, 5:53pm

No, after running bash sudo fstrim /rw and shutting down and starting the qube back up, nothing has changed with respect to my aforementioned usage percentages.

n81XhRhm · November 5, 2024, 5:54pm

No, after running sudo fstrim /rw and shutting down and starting the qube back up, nothing has changed with respect to my aforementioned usage percentages.