Proxmox reclaim disk space. I only use it to store ISO and container templates.
Proxmox reclaim disk space Jan 15, 2014 · Looked around for an answer to this but didnt quite find (except fstrim). zfs destroy rpool/data/vm-100-disk-0 zfs destroy rpool/data/vm-100-disk-1 But first double check if Apr 17, 2024 · I have a problem with (local-lvm) space in my proxmox. conf. If you want to get rid of the zvols you need to remove them. May 19, 2013 · Sparse disk image formats such as qcow2 only consume the physical disk space which they need. googled itcant make head nor tail of what im readingi know im not using all of the disk. Jul 7, 2025 · Regarding the problem that the actual disk space used by ProxmoxVE7. 2. Key details: Configuration: Containers use LVM-Thin storage with discard enabled. I've noticed with the decrease in space on this small zfs that the server is slowing down massively, I'm getting a load of 40-50 and io delay of 30% and that's with proxmox using about 90gb of ram. In this article, we will explore four effective methods to reclaim disk space: managing the systemd journal Jul 25, 2025 · Hunting Down Orphaned Disks in Proxmox: A Simple Bash Script to Reclaim Storage In any Proxmox setup, especially one using shared storage like a NAS, it's easy to accumulate orphaned virtual disks over time. These are remnants of deleted VMs or containers that silently continue to consume valuable storage space. Apr 29, 2016 · Hey guys We are using ceph-fuse to mount a CephFS volume for Proxmox backups at `/srv/proxmox/backup/`. Ah, this aint no problem, right? Just do fstrim like always! Apr 26, 2021 · It’s about giving you the clue to understanding what Proxmox & Linux is doing. Dec 8, 2009 · Hi, it's possible to reduce the size of the KVM qcow2 virtio partition without windows clone backup and restore? any other quickly solution? Regards, Sorry just to clarify - has the disk that all the vms been created on run out of disk space or has the local disk in each vm run out of space? I ask because I know how to increase the size of a vm on the disk but not how to remove data from the disk to clear vms. I deleted a lot of files to free up some space in (local-lvm), but the space in proxmox is still reserved. 4-17 and have around 20 VM's, working perfect. How do I recover the space taken by the original vm-108-disk-0. I was able to use a rescue disk to remove some files and reduce the size of the VM, but the pool is still full. 1), it was also moved to local storage (type LVM-Thin) but created the disk as a full 512GB-occupied disk. I have now deleted the temp files of windows but it is still using the space on the lvm storage. Recently, I noticed that the backup volume kept running out of free space and therefore the backup jobs were failing (we had a Ceph quota of 2 TB in place on the pool for safety reasons) Mar 14, 2025 · Until Proxmox provides a native solution, this guide offers the best available methods for those who need to reclaim disk space inside their virtualized environments. Proxmox states that I've using 250GB of storage on my local disk but I only. Mar 25, 2017 · I have a Windows 2003 VM in Proxmox 4. Learning how to resize Proxmox disk space properly ensures you can handle storage expansion and reduction on both LXC containers and VMs without data loss. Now some temporary files where written on the drives that took much space, and my lvm storage on the node is almost empty. Aug 13, 2020 · Originally it was on the HDD as vm-108-disk-0 and on the SSD it was also vm-108-disk-0. I didnt have discard on because of oversight. Thanks a lot. May 28, 2020 · I simply want to shrink the disk down to free up unused space, returning it to the LVM thin pool. Aug 22, 2025 · Running out of disk space on Proxmox containers and virtual machines happens more often than you might expect. The issue with shrinking the space for an environment such as Proxmox is not well discussed. No thin or sparse creation. I'm thinking that a VM's ext4fs ate a lot of disk, files subsequently deleted and the zvol remains large, despite being thin provisioned. For example, if a guest is given a qcow2 image with a size of 100GB but has only written to 10GB then only 10GB of physical disk space will be used. After offloading contents elsewhere and shrinking this volume to 50GB, I don't see the space freed up on the lvm-thin storage. It happens that in the migration of the disk, the file was completely filled up to 10G despite using qcow2 which at first is thin provisioning So what I did is use the dd inside the vm to blow up her space I didn't fully get it. Proxmox offers this feature to help manage virtual machine storage on the Proxmox Virtual Environment (PVE) platform. Jul 27, 2024 · Learn optimising disk space in Proxmox by removing old kernels, cleaning logs, and managing files efficiently. Id like to get the space back We would like to show you a description here but the site won’t allow us. By looking at the actual disk usage with this handy snippet, I figured that I could easily reclaim some space though: Dec 8, 2019 · However, I don't seem to be able to reclaim the jump in storage needs following the opnsense guest upgrade. Master storage configurations and space usage. Jul 1, 2022 · I knew the day would come: the way overprovisioned (hey, it’s called home lab for a reason) LVM-Thin storage pool I use to back my LXC containers in Proxmox has filled up. The VM itself runs fine, but at the moment the only way to reclaim the space would be to either do a native back up of the disk, recreate the disk and restore from backup. See full list on dannyda. I'm assuming here that the upgraded guest OS doesn't actually use all that space or something is amiss with my opnsense upgrade. I have the same issue with VM's and Containers. Well now its 98% full so I've decided to remove files from the disk and reclaim that space. issue_discards = 1 in /etc/lvm/lvm. With Proxmox, resources are allocated to VM or LXC for the VM/Container to use. Recently my lvg became corrupt ("volume group pve has insufficient free space!") First, I tried to repair the vg: $ sudo lvconvert --repair pve/data Volume group & Aug 31, 2024 · If you have your HomeAssistant installed in Proxmox then there’s a possibility that you could save disk space on your backups/snapshots. com Jul 20, 2024 · I'm running Proxmox 8. PCT FSTrim reports success, but no space was Nov 20, 2020 · On the Proxmox GUI I accidentally increased the disk space of my Ubuntu VM by too much, and now I'm left with 15 GB of unallocated space, as the Gparted screenshot shows. What is the best way to delete this Nov 23, 2015 · As it seems not possible to directly use chroot for LXC storage (due to having to do it in a hacky way and apparently having problems with "su") I am using the default raw image. i was trying to check with ncdu what's on the disk, but it shows only 8,4 GB is May 16, 2023 · Hi, I had a LXC (Immich) with a 500GB volume stored on a lvm-thin storage. Shrinking is something that we all will have a need to do one way or the other simply because we always over provision space in a Windows VM. Jul 12, 2025 · Free up disk space Proxmox Running out of disk space on your Proxmox server can lead to performance issues and prevent you from performing essential tasks like updates or creating new virtual machines. In screenshot 01 in my (VM 100) I have 66g used from 147G and 75G is free, and I am using (local-lvm) for this VM. Fortunately, there are several ways to free up disk space on Proxmox OS drive. Disk use in the guest is reported as: Feb 22, 2020 · If you have a storage underneath that supports thin provisioning and zeroing of unused space (ZFS, Ceph, I think thin LVM) then it helps to pass through the discard/trim commands to the actual storage to reclaim unused space. Are the VMs you want to delete stored in dataset rpool/data or are these the zvols rpool/data/vm-xxx-disk-x? ZFS Volumes (zvol) stored under rpool/data are also calculated into the used space (here 688GB). completely unused and never partitioned because I realized my mistake immediately. How do I safely reclaim this used disk space without compromising the existing VM's? Jul 27, 2015 · I used to be able to reclaim free space of VM's when I was still using ZFS, but with RBD images on Ceph it does not seem to work properly, I manage to reclaim some of the free space but not all. — Thanks for reading my blog! Hey, my live production proxmox server just ran out of space on local. The disk is 80GB but Windows uses only 30GB. I wanted to delete the lvm-thin "data" but it gives an error as i've got absolutely no free space. This usb storage box is mounted to a Mar 23, 2023 · On the receiving Proxmox instance (Proxmox 8. I also have /dev/nvme0n1 that's a 1TB nvme that I use to store all of my VMs on and backups. For example, I have a container Aug 21, 2014 · Does anyone know of any way to recover virtual disk space when migrating from LVM to directory? Like I have a vm with 10GB disk and migrated from lvm-thin to directory in qcow2 format. 4. So far so good, but as it's the same, just the . 4, which resides on a ZVOL. As we underst Jul 3, 2024 · Hello all, I have a situation I could use some assistance with, I have a usb storage box that has 3 hard drive inside that totals 6TB the file system is set to ext4. I only use it to store ISO and container templates. But if we remove a VM, we experience that there will be no extra 'free space' after that. 1-7 version VM exceeds the upper limit of the mounted disk My ProxmoxVE Disks use the Directory method to mount storage. Aug 2, 2022 · I have a local disk /dev/sda - it's a 500GB SSD that pve is installed on. Is there an instruction of removing the full VM including the reclaim of the disk space? Thanks in advance! Jul 30, 2020 · I have noticed the free space on my local partition is decreasing significantly, while in theory there should be basically nothing on this partition except the proxmox system and a few iso images or lxc templates. May 31, 2025 · For the LXC container, my current mitigation involves periodically executing fstrim -v / within the system to reclaim space. Jun 7, 2022 · Appears our system is starting to run low on disk space (VM running on Windows Hyper-V) and am looking for ways to reclaim disk space, as my understanding is that the emails are only temporarily stored and then removed. Within the VM if I run df I see I have 4TB free space on /sdb: ~$ df -H Filesystem Nov 30, 2021 · Hi there, We are using Proxmox Virtual Environment 7. Now I need to move it back, I see the original virtual disk, vm-108-disk-0 is still there, but moving it back then creates a vm-108-disk-1. How can I reclaim the storage on the ZVOL? sdelete inside the VM zeros out the free space but this seems to be no reclaimed by ZFS. Follow this guide for freeing up disk space in Proxmox. i can only gather its space that was used thats not been reclaimed?? May 26, 2023 · Proxmox Cache Discard Feature | An Introduction If you are looking for a way to reclaim the free space that does not have any data, the Discard option is the best choice. Lots of temporary files are often created and expunged as part of the system running, but what (I think) happens is that Proxmox host registers the increase in disk use, but Feb 17, 2023 · Hi, one of my VMs expanded to fill the pool, and maxed out the storage. You can see that in proxmox WARNING: You have not turned on protection against thin pools running out of space. The problem with this images is that once that you use space, it is never released. How to clear My question is, am I missing additional setups to reclaim the free space? Under disk summary, LVM-Thin, % free space haven't buzzed at all. - the LXC volume is succesfully shrinked, working, confirmed as being 50GB in size - ran Jul 6, 2016 · Hello @ all, I have a few Windows VMs on a thin-lvm storage. I have discard enabled and the follow the following Oct 19, 2021 · Appears our system is starting to run low on disk space (VM running on Windows Hyper-V) and am looking for ways to reclaim disk space, as my understanding is that the emails are only temporarily stored and then removed. Jun 30, 2016 · I run KVM based virtualization server (namely, Proxmox) where some Debian based machines are run in KVM VM's. And when I launch the VM, I'm getting this warning: WARNING: Thin volume pve/vm-101-disk-0 maps 1037488357376 while the size is only 549755813888. raw disk images saved on the NFS server, I get the same problem: delete a file in a container and the disk space will be still used. When examining disk metrics via smartctl on the Proxmox host, I noticed significantly higher write operations compared to reads, as shown below: SMART/Health Information (NVMe Log 0x02) Critical Warning: 0x00 Aug 1, 2017 · BUT, I've ran out of disk space so I used a NFS share for some containers disk images. May 5, 2025 · Problem Description After deleting files from LXC containers, the LVM-Thin pool (local-lvm) does not reflect freed space. Is there any tool via the GUI or commandline (Linux experience/exposure is Jul 20, 2025 · Manage storage in Proxmox with effective commands to optimize, troubleshoot, and reclaim space. There is some slight overhead associated, so the Jun 18, 2021 · The disk usage on each VM I am running is much lower than what is being shown on the Promox GUI. Proxmox can create backups of VMs, it also compress the VM disks images. 3mts3fyabqpie9y3hppljf40fcw5dhwrh7rfh19nvxj223bm2gtdwr7