LVM Volume shown as empty but it's not

Halfman

Active Member
Sep 24, 2018
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Hello, I have a weird behavior with an LVM volume. It seems that the disk usage is not shown correctly.
I have mounted the LVM volume on the host using the `mount` command and have move some files on it.
The `df` command is showing the good value for disk usage but Proxmox interface and LVM commands seems stuck on "0,00 %" usage. Where is my issue?


Here is the result of the lvs command :
upload_2018-9-24_14-3-24.png

Here is the result of the df command :
upload_2018-9-24_14-3-51.png

It seems that the space used by the files I created is not allocated correctly. Lvdisplay show the same numbers :
upload_2018-9-24_14-5-9.png

Thank you for your help!
 
seems you created a filesystem on top of your thinpool - usually you just add the volume group and the thin volume in /etc/pve/storage.cfg, and proxmox creates thin-volumes for each virtual disk you create...
please post the contents of your `/etc/pve/storage.cfg`, as well as the output of `pvesm status`, `vgs`, `lvs -a`.

Also take a look at our reference documentation: https://pve.proxmox.com/pve-docs/chapter-pvesm.html#_lvm_thin_backend
 
Hello, thank you for your fast answer. Yep, it seems that I made it the wrong way.

Here is the content of my `/etc/pve/storage.cfg" :
upload_2018-9-24_16-29-48.png


`pvesm status` :
upload_2018-9-24_16-31-10.png

`vgs` :
upload_2018-9-24_16-31-40.png

`lvs -a` :
upload_2018-9-24_16-32-3.png
 
if you're really sure that you haven't saved anything on `/download` yet - you could just remove the thin volume and create it again - then do not create a filesystem on top of it and don't mount it - if the thinvolume is called download then your storage.cfg entry should already be correct.
 
Yep there is no important data on this. Ok I will do this, thank you for your help.