mdadm

  1. Multiple passthrough disk to VM

    Hi guys, I would like to know if it's possible to assign more than one phisycal SSD to VM (Debian in my case) with /dev/disk/by-id/ command. I want to passthrough two SSD disk and create a mdadm Raid 1 beetween them to increase read performance and reliability of VM's data (xfs partition on SSD...
  2. RAID1 lässt sich nicht assemblen nach Reboot

    Hallo, ich habe mit mdadm herumgespielt und es klappt erstmal alles. Wenn ich aber ein Reboot des kompletten Server mache kommt das Raid1 nicht wieder. Auch ein erzwungenes Reassemble löst das Problem nicht. Erst ein erneutes Erstellen des Raids stellt den gewünschten Zustand wieder her...
  3. Consumer-SSDs im RAID 1 mit sehr schlechter Schreibperformance

    Hallo, ich habe folgendes Problem. Wir haben ein "Budget" Node mit 3x Samsung 860 QVO 1TB. Eine Disk wird für das System an sich verwendet und ein Software RAID 1 für den VM Storage. /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 ...
  4. Nas auf Proxmox mit Raid

    Hallo, ich heiße Marcel und bin gerade dabei Proxmox auf meinem Server zu installieren. Soweit funktioniert alles. Nur ein Openmediavault will nicht so wie ich das will. Ich habe 5 Festplatten die ein Raid 5 bilden sollen. Noch dazu ein Raid 0 mit 3 Festplatten. Wie ich schon herausgefunden...
  5. update-initramfs failed - No /etc/kernel/pve-efiboot-uuids found

    Hello, I am setting up a RAID on a new Proxmox 6.1 server and I wanted to update the kernel in order to keep the RAID after a reboot (I had to do that with Proxmox 5.x) To begin, I created the RAID : mdadm --create /dev/md3 --metadata=0.90 --level=1 --assume-clean --raid-devices=2...
  6. Server froze, rebooted however can't boot due to mdadm failed

    Helllo everyone. I have Proxmox installed on top of Debian software RAID-10. Today it froze and I restarted manually, unfortunately it doesn't boot due to mdadm error. A. It gives following error on boot. B. cat /proc/mdstat C. blkid What I find weird is boot error UUID doesn't...
  7. software RAID

    Hello Hope you are fine. I am working on a research project about software RAID. I scrutiny great software, Proxmox , as a case study in this research. I just wanted to ask you which method you have used for implementing software RAID. I have acquaintance with Linux kernel md, did you use this...
  8. Benchmark: ZFS vs mdraid + ext4 + qcow2

    After fighting with ZFS memory hunger, poor performance, and random reboots, I just have replaced it with mdraid (raid1), ext4, and simple qcow2 images for the VMs, stored in the ext4 file system. This setup should be the least efficient because of the multiple layers of abstraction (md and...
  9. Best setup for 2x3TB disks for use in OpenMediaVault vm

    Hello all I'm struggling with choosing the best configuration for my setup. I'm using `pve-manager/5.3-5/97ae681d (running kernel: 4.15.17-1-pve)` I have a OpenMediaVault in a virtual machine and I want to have my 2x3TB disks in a raid1/mirror and have OMV use the whole for a CIFS share. I...
  10. New disk management sugestion - PVE 5.2-8

    Hi there! Could you consider implementing support for mdadm for the future ? A lot of SMBs and SOHOs use it as ZFS ram requirements are very costly for them. Thanks!
  11. Guest Software RAID 1

    I've been using Linux on various PCs as a home server over the years, and now when it's time to retire the old PC and replace it with a somewhat newer, I decided to use proxmox. The old Linux PC had two physical disks in a RAID 1 configuration (mdadm) that I've put in the new server running...
  12. Prox mdmda /dev/md0 disapears after reboot

    Hello, Proxmox 4.4 / prox instal on 2x32go SSD in raid 1 + 3x 4to in raid 5 After a bad crash I would like to re-construct my server data : I have a raid 5 made with mdmda I have enabled mdmda found in the lvm.conf. After I built my raid 5 (3x 4to) I could see it / make my pv / my vg and all...
  13. Linux Software RAID (mdadm)

    I haven't yet tried a 5.0 installation, but I was wondering if the PVE installer allows creation of Linux software RAID and then installation of PVE on that RAID? On 4.x, I had to do a manual install of generic Debian first, then (hard to remember, it has been a few years ago) do something else...
  14. DRBD9 on mdraid with SSD storage

    Hi, We're preparing a migration scenario where we'd like upgrade our Proxmox 3.4 cluster to 4.x and convert our exisitng storage to SSD. Would you consider it smart enough to put DRBD9 based volume over mdadm RAID-10 over a set of SSD storage? AFAIK, SSDs themselves should be able to provide...
  15. Discard for SSD with LVM over MD?

    I added two SSD in my server to have speedy partition to store VM images. I've create mirror over that two SSD with mdadm, then create LVM over that mirror (so I can afford to do snapshot backup of VM). Then I've mkfs.ext4-ted over that LVM. Now I wonder: what if I set or not set 'discard'...

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