discard

Problem Description After deleting files from LXC containers, the LVM-Thin pool (local-lvm) does not reflect freed space. Key details: Configuration: Containers use LVM-Thin storage with discard enabled. issue_discards = 1 in /etc/lvm/lvm.conf. PCT FSTrim reports success, but no space was...

Hello I want to open this thread because all other threads, that I found, did not mention my use-case. Again, it is about the discard and ssd-emulation option because I don't get it. My current setup hast two internal zfs pools. Created with Disks -> ZFS -> create: ZFS One is SSD and the...

Hello, I have problems with various VMS that seems do not release unused space. Here is the VM Config: Here is the fstab: Here is the LVM config: Here is the Filesystem free disk space: I've also issued fstrim manually after poweroff/poweron the VM: But when I investigate du on...

Hello! Thank you for reading my post! I'm creating my first Windows 11 VM on Proxmox and I was wondering what are the best settings for the storage? I want it to be fast so I'm looking for the settings that would provide the best performance. I'm using a DRAM-less SSD to store the disk of the...

Hi guys, I'm still confused about the bdev_enable_discard & bdev_enable_discard options in Ceph, if this option is activated will it trim (clean unused blocks) automatically? I have activated it, but I don't notice any changes. and it looks like it's still the same as usual, you have to use...

Hello everyone, I’m reaching out to you all as I’ve encountered a bit of a puzzle with my mini PC setup. I’m fairly new to this, so any guidance would be greatly appreciated! Here’s my current setup: I have a mini PC equipped with a 1TB NVMe SSD and a 1TB SATA HDD. I’m running Proxmox on the...

Hello everyone, I’m reaching out to you all as I’ve encountered a bit of a puzzle with my mini PC setup. I’m fairly new to this, so any guidance would be greatly appreciated! Here’s my current setup: I have a mini PC equipped with a 1TB NVMe SSD and a 1TB SATA HDD. I’m running Proxmox on the...

On PVE 8.1, I have a thin pool on NVME with a few containers. I deleted one of the containers (via GUI) and now I am not sure if the space used by the LV was discarded/trimmed. I can't issue an `fstrim`, unless it is against a directory, nor I can issue a `pct fstrim` against the CT because...

I am currently migrating some VM disks from internal drives to multipath iSCSI. I am new to iSCSI and so am wondering about best practices for PVE VM disks hosted on there. By default I have all VMs set to Discard and SSD emulation, but I am now wondering if those settings make sense on iSCSI...

I tried to use the discard feature of the virtual disk. I mapped a Huawei storage LUN to proxmox via FC link and added it as LVM-Thin storage. The discard option is selected when the VM disk is created. After the virtual disk is deleted,The proxmox page shows that the space of the LVM-Thin...

I was wondering, why the "discard" option at Hard Disk isn't set by default. Can that cause negative effects or why it's not set by default?

Hello Since I've enabled replication between a remote server and one of my VM I notice a constant increase of storage. In fact, when I discovered it when I reach 100% of my Thin-provisioning capacity on the data pool. So after reading a couple of threads, I found that I need to enable the...

How important is it to turn on the "Discard" option for VMs when using an SSD drive for storage? - Eric

VMs with Debian 10 or Ubuntu 20.04 configured according to instructions https://pve.proxmox.com/wiki/Shrink_Qcow2_Disk_Files#Linux_Guest_Configuration fstrim -av writes that he successfully released about 10Gib But! qcow2.img size not changed (VM fs size 7.7G and qcow2 size 20G) After poweroff...

Hi everyone, 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...

We are running Proxmox 6: root@kvm02-a-lax:~# pveversion -v proxmox-ve: 6.0-2 (running kernel: 5.0.21-4-pve) pve-manager: 6.0-11 (running version: 6.0-11/2140ef37) pve-kernel-helper: 6.0-11 pve-kernel-5.0: 6.0-10 pve-kernel-5.0.21-4-pve: 5.0.21-9 pve-kernel-5.0.15-1-pve: 5.0.15-1 Our OS is a...

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?

Hello! 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...

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 bootdisk: scsi0 cores: 1 ide2: none,media=cdrom lock: backup memory: 4096 name: pippo001 net0...