lvm

  1. F

    virt-resize freezes

    Hello. I'm trying to create new docker vm using community helper script: bash -c "$(wget -qLO - https://github.com/community-scripts/ProxmoxVE/raw/main/vm/docker-vm.sh)" Unfortunately, the script freezes on Expanding root partition to use full disk space Some investigation showed me, that it...
  2. J

    Ceph OSD woes after NVMe hotplug

    We're in the process of validating a PVE cluster setup that will be deployed to prod some time in 2026, and for that purpose, we've spun up the MVC (Minimum Viable Cluster) that mimicks, except in node count, what we're planning to have by then. As a result, we have three modern Dell boxen with...
  3. J

    Backups not working with fleecing and snapshot-as-volume-chain

    I have an iSCSI LUN with LVM storage layered on top. I'm not sure if this is the best configuration, but I enabled fleecing to the same storage and snapshot-as-volume-chain. Fleecing used to work fine before I turned on the volume chain function and converted the .raw disks to .qcow2. Now it...
  4. bbgeek17

    [TUTORIAL] Understanding QCOW2 Risks with QEMU cache=none in Proxmox

    Hey everyone, A few recent developments prompted us to examine QCOW2’s behavior and reliability characteristics more closely: 1. Community feedback There are various community discussions questioning the reliability of QCOW2. We have customers (predating our native integration) interested in...
  5. C

    Snapshots as Volume-Chain Creates Large Snapshot Volumes

    I've been playing with the new Snapshots as Volume-Chain feature. It works fine, but I've noticed that for each snapshot it creates a snapshot volume that is the same size as the source volume. I suppose this make a certain sense, and may even be a hard requirement, but it does pose a problem...
  6. R

    Boot stuck in emergency mode after fstab comment and network changes; LVM pve/vg_proxmox, Radeon GPU, cursor freezes

    Hi, Proxmox VE 8.x boot stuck in emergency mode ("Failed to start" errors, garbled text, cursor freezes – see screenshots). No network, can't access web UI. Suspect Radeon GPU (512 MB VRAM) graphics issue. Help needed! System Specs: Hardware: [CPU e.g. Intel i5, RAM 16GB, Motherboard...
  7. M

    iSCSI LUN size wont reclaim and possible bug

    TrueNAS created a ZVol, Sparse: on; created a iSCSI target, Disable Physical Block Size Reporting: off. PVE mapped iSCSI target, "format" and use it on VM, works no problem. on VM creation, one than one vm-<ID>-disk-<ID> will be created. For example 1G disk created. The issue is after...
  8. J

    iSCSI Shared Storage Configuration for 3-Node Proxmox Cluster

    Hi I'm trying to configure shared iSCSI storage for my 3-node Proxmox cluster. I need all three hosts to access the same iSCSI storage simultaneously for VM redundancy and high availability. I've tested several storage configurations: ZFS LVM LVM-Thin ZFS share Current Issue With the ZFS share...
  9. D

    Very slow write speed and constant high I/O pressure on Proxmox

    Hey, if I try to create a LXC Container on my Proxmox, it takes up to 5 minutes. The issue doesn't appear when I install a VM. While a container is creating, the disk usage for that disk is at 100% (checked with iostat -x 1) I also tried to write with "dd": root@pve1:~# dd if=/dev/zero...
  10. P

    [SOLVED] VM state goes to "io-error" - due to qemu-server <9.0.8 - bug with qcow and LVM

    Hey, on a shared storage with hundreds of VMs, I have one VM that seem to constantly switch to the "io-error" state. My setup: I have a non-thin LVM, that is connected via FibreChannel to the host. The physical volume is 8TB big. Only ~3TB is assigned to VMs, so I don't think it's an issue of...
  11. R

    QCOW2 disks on LVM do not report size for powered-off VMs.

    Hello All, For powered-off VMs, we cannot view or query the size of QCOW2 disks on LVM storage — unless the VMs are powered on or activated via SSH. Is this a bug?
  12. H

    [SOLVED] PVE 9 - can't create snapshot on LVM thick

    Hi. I've updated some of PVEs to version 9 to test the new snapshot support for LVM thick storage. I've created the LVM storage which is shared among nodes in cluster, checked "Allow Snapshots as Volume-Chain" during storage creation, moved some VMs there and when I go to VM -> Snaphosts it...
  13. H

    Cannot migrate VM back from LVM storage

    Hi. I've recently added an LVM thick storage to my PVE cluster which is a LUN shared between 4 of 5 nodes and everything works just fine except VM migration. I migrated VM from the 5th node which only has local storage to different node and shared LVM storage. Now I can't migrate it back. When...
  14. O

    [SOLVED] pve8 to [ve9 and LVM autoactivation settings

    Hello! I'm preparing to upgrade a cluster to pve version 9. The readiness script has flagged LVM autoactivation as a potential issue. Will running the script to disable LVM autoactivation interrupt running VMs across the cluster? I have a few nodes still on pve 7, but I will be updating them to...
  15. bbgeek17

    [TUTORIAL] Inside Proxmox VE 9 SAN Snapshot Support

    Hi Everyone, I'm excited to share a deep dive into one of the notable new feature in PVE9: the enhanced snapshot functionality designed for legacy SANs. This feature represents a meaningful step forward in expanding PVE's compatibility with traditional enterprise storage setups, something many...
  16. R

    [SOLVED] proxmox connects to iscsi targets after (failed) VM autostart?

    Hello, I found out that after proxmox starts VMs which have their disks on iscsi storage and are expected to autostart fail to do this because their storage is not ready yet. By the time I login to the web gui I can start the VMs by hand with no problem: ........... Aug 12 07:00:11 hv02...
  17. T

    Proxmox scratch Installation without LVM on system/root disk

    Hello freaks, maybe I’m just being dumb right now, but I can’t seem to install a Proxmox server without it automatically setting up LVM on the system/root disk. I’d really prefer to work with classic partitions because I’m not a big fan of LVM. Maybe I’m missing something—please give me a hint...
  18. L

    Migration LVM => ZFS

    Hello guys! Can i migrate on proxmox installation in LVM to ZFS without formatting the system? Thanks!
  19. N

    MSA 2060 SAN FC with single server (no shared access)

    Hi everyone, We currently have the following setup running under VMware, and I’m looking into migrating it to Proxmox VE: One physical server: HPE ProLiant Gen11 One external storage system: HPE MSA 2060 FC, configured with a RAID MSA-DP+ array built from 24 HDDs The server is connected to the...
  20. T

    LVM/iSCSI via Cluster GUI - Other nodes not creating PV/VG/LVM after storage.cfg syncs correctly

    Hi All, I see others have noted this issue, but it was never clarified if PV/VG/LVM creation on each node should be handled automatically when creating a shared LVM over iSCSI storage at the cluster level. The primary node creates everything and storage.cfg syncs across however the other 2...