Qubes disk free space not available

[leonardo-dc]

Qubes OS version:

R4.0

Affected component(s):

dom0 (qubes_dom0/pool00)

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Steps to reproduce the behavior:

Free disk space does not increase/available (after files removal).

Expected behavior:

I must be able to use the free disk space again after deleting my files.

Actual behavior:

I just remove about 100GB of files from the Dom0.

But even after that, for example, in one of my VM I continue have a problem with an early filling of free space:

user@host:~$ df -h | egrep "/rw|Used"
Filesystem          Size  Used Avail Use% Mounted on
/dev/xvdb           260G  228G   33G  88% /rw


user@host:~$ sudo fallocate -l 9G /test
fallocate: fallocate failed: No space left on device


user@host:~$ sudo du -sh /test
6.7G	/test


user@host:~$ df -h | egrep "/rw|Used"
Filesystem          Size  Used Avail Use% Mounted on
/dev/xvdb           260G  228G   33G  88% /rw

These values are constant (free space decreases but does not increase [after removal files or VMs]):

user@dom0 ~ % sudo lvs qubes_dom0/pool00                  
  LV     VG         Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  pool00 qubes_dom0 twi-aotz-- 453.17g             91.85  41.55                           

General notes:

I have about 282GB date on my 453GB pool00 and the strange No space left on device error.

I ran a disk check with sudo fsck -f /dev/mapper/qubes_dom0-vm--my--vm--private
And also ran sudo pvck -v /dev/mapper/luks-efirowmc-ei3o-9381-9d93-d8209d0j3ice

Any help is appreciated. How-to free disk space for use?

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Related issues:

[marmarek]

/test is not in /rw, so the above test isn't accurate.
Anyway, make sure you have 'discardoption enabled for/in dom0 and template(s) (/etc/fstab). It should be there for fresh 4.0 install, but if you've update from earlier release candidates it might be missing. Alternatively runfstrim` manually after removing files.

[marmarek]

/test is not in /rw, so the above test isn't accurate.
Anyway, make sure you have 'discardoption enabled for/in dom0 and template(s) (/etc/fstab). It should be there for fresh 4.0 install, but if you've update from earlier release candidates it might be missing. Alternatively runfstrim` manually after removing files.

[leonardo-dc]

You are right. The fstrim at dom0 helps me. Thank you!

user@dom0 ~ % sudo lvs qubes_dom0/pool00                  
  LV     VG         Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  pool00 qubes_dom0 twi-aotz-- 453.17g             66.43  31.15                           

[leonardo-dc]

You are right. The fstrim at dom0 helps me. Thank you!

user@dom0 ~ % sudo lvs qubes_dom0/pool00                  
  LV     VG         Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  pool00 qubes_dom0 twi-aotz-- 453.17g             66.43  31.15                           

[andrewdavidwong]

Closing this as "resolved." If you believe the issue is not yet resolved, or if anyone is still affected by this issue, please leave a comment, and we'll be happy to reopen this. Thank you.

[andrewdavidwong]

Closing this as "resolved." If you believe the issue is not yet resolved, or if anyone is still affected by this issue, please leave a comment, and we'll be happy to reopen this. Thank you.