we observe major performance issues while running fstrim on VMs backed by a SSD pool (3 replica, 50OSDs) with Ceph (16.2.7) on proxmox. We have a workload that leads to some bigger data fluctuation on our VMs (CentOS 7) . Therefore we have enabled the discard mode for the disks and run...
i have problems with trim on debian 11 guest VM , i used windows server as guest on different VM and its was working for it
i used virtio-scsi and ssd emulation on/off, discard on
underlying storage is NVME drive
pve-manager/7.2-4/ca9d43cc (running kernel: 5.15.35-1-pve)
any way to get the pct fstrim command to ignore the /mnt directory or mountpoints in the LXC? i get an error on all LXC with ZFS mountpoints:
fstrim: /var/lib/lxc/121/rootfs/mnt/Media: the discard operation is not supported
command 'fstrim -v /var/lib/lxc/121/rootfs/mnt/Media' failed: exit code 1
I have a guest VM which seems to be unable to utilize the discard option to free up block space. The guest VM is a Ubuntu 18.04 LTS OS with an ext4 root FS. Underlying storage is Ceph on Bluestore OSDs. VM storage controller is VirtIO-SCSI, with just a standard 1TB disk attached to...
Do I need to schedule fstrim for SSD disks (or even HDD?..) on Proxmox 6.2 ?
And if I do, how exactly do I schedule such a job? I've searched online but didn't find anything except for scheduling backups...
I have a cluster that has relatively heavy IO and consequently free space on the ceph storage is constantly constrained. I'm finding myself performing fstrim on a more and more frequent interval. Is there a way to auto trim a disk for an lxc container?
I've been trying all day to get fstrim working inside unprivileged LXC containers with no luck. Initially I thought it was just a Debian/Ubuntu issue, but I've tried multiple OS templates and it always results in: FITRIM ioctl failed: Operation not permitted. FYI it works fine in...
I've just discovered that debian/ubuntu has a bug with running fstrim inside containers. However, I am not using LVM-thin, just regular LVM. Therefore my raw disk image size won't change when files are deleted or added.
For this reason, I'm thinking maybe there's no need to run fstrim...
We have a couple of servers configured to use local ZFS pools for storage. These pools have Thin Provisioning enabled.
I used to think that Thin Provisioning + ZFS was enough to have the VMs use on physical storage the same space that they are using into themselves, but it seems I was...
Guten Tag Zusammen,
ich habe vor kurzem die Einstellung bei allen meinen Windows Gästen geändert. Jetzt laufen alle mit SCSI Controller VirtIO SCSI und die Festplatten logischerweise an scsi0 mit der Option discard.Auf allen VMs sind die aktuellen Spice-Tools mit dem Qemu Agent installiert...
About returning unused space (trim or discard mapped size disk)
I know about use `fstrim` command in guest vm.
But I can not login to the guest customers!
Now, my question is, is there any way to do this from within the host machine (main proxmox server)?
Hello to the community,
I was following this thread to find the solution to the problem, but I got different behaviour.
My guest VM is using 13GB on /dev/sda1, here's the configuration
Hey everyone !
We were moving disks from a storage to another and noticed that when they arrive on the new storage, the thin provisioning expanded to full space.
Before, when we had a few VMs, we could use the old method to empty the disks (using dd to fill the disk with zeros and deleting...
I have two issues:
1. When I do a command like dd if=rawfile | pv | dd of=/dev/zfs-pool/vm-disks/vm-109-disk-1 to import 96 GB large disk to Proxmox (the disk is created with 96 GB size), the occupied ZFS space increases for about 188 GB. Is this normal behaviour? I have tried on two...