Recent content by Tim Denis

  1. removing GPU after install/boot: pci passthrough

    Hi, This question: I can passthrough a PCIe device to a VM. Also a graphics card should work I understood. But what if this is the ontly card in the system? I don't need a display output for the PM install: the web interface and CLI over ssh will do just fine. But I need it for booting I...
  2. Slow disk performance

    That should be the case. But it isn't. I'm 100% sure I didn't mix up the results. Yes, I know. But still, those first couple of GB's should be fast, no? Or is linux somehow skipping this cache? it shouldn't, since that is hardware... Yes. But I tested with 8GB test file size. To make sure to...
  3. Slow disk performance

    Thanks for your reply! I did not know that /dev/urandom would be so slow... :) gave me the exact same 180MB/s limit. So that's clear now. I started testing with fio. Seems ever slower than I thought! fio --filename=/media/nvme/fiofile.delete --size=5GB --direct=1 --rw=randrw --bs=64k...
  4. Slow disk performance

    Hi! I've got a X9DRE-LN4F supermicro board with 128 GB DDR3, and 2x Xeon e5 2620. Not the newest server, but it runs. I noticed a high IO delay, and went on an investigation. Specs: - proxmox 6.3 - 2 x 1TB Samsung 850 pro 1TB in zfs mirror (configured during install) BIOS (and IPMI)...
  5. Proxmox storage: Questions and / for best practices

    !!! It just occured to me I'm wrong about the expected disk space... raidz2 should mean I lose 2 disks, so I should get 6x2TB = 12 TB, and not 10TB... #feelinglikeanidiot
  6. Proxmox storage: Questions and / for best practices

    Hi Fabian, thanks for your reply. Okay, this makes things a bit more clear now. So I accume that the filesystems / LVM used in the guest has no influence on this? Only the ZFS is responsible? Do I understand correctly from what you are saying that ZFS had already 3 disks 'against failure'...
  7. Proxmox storage: Questions and / for best practices

    Hi all, I have some questions about the storgae model, and what the best practices are to deal with this. I hope this thread may become a reference for others. So, what I have: 8 x 2TB disk and a nvme drive (a slice for the OS, and a slice as cache.) I configured a zpool: pool: tank state...
  8. [SOLVED] Import/convert/export raw images to ZFS volume

    > Why do you not use backup & restore to migrate the VM? because I wanted to uze zvol instead of raw image files. What does work (or at least for the first VM I tried) - make backup - rsync backup file to new host - restore backup - dd raw file to zvol - start vm works so far... > Do I...
  9. [SOLVED] Import/convert/export raw images to ZFS volume

    Not sure if I need to start a separate topic for this, but this is the problem I'm experiencing: I have 2 machines, Virtual Environment 4.3-12/6894c9d9 (source) and Virtual Environment 4.3-14/3a8c61c7 (destination). On the source machine some VM's are running and the disks are stored on a zfs...
  10. Installer: Unable to get device for partition 1

    Thanks for your reply. I didn't know proxmox would write so much on the device where the OS is installed...? Anyway, one of these http://www.lexar.com/pro-1000x-sd?category=5286 should have wear leveling. But maybe I shoudl refrain from the plan of having PM installed on a SD card... but...
  11. Installer: Unable to get device for partition 1

    Hi! I found this thread looking for a solution to install PM on NVMe drive in a supermicro server. PM 4.2 works like a charm (4.1 cannot be installed on an NVMe drive aparently...) However, I'm running into the same error on an intel NUC 6i5SYH, when trying to install PM to the SD card. The...

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