arc

  1. E

    Proxmox randomly freezes or reboot

    Hi good day. We have a Proxmox system installed on a B560M DS3H V2 motherboard (Core i9-11900 11th gen, 64GB RAM). It have been working with no mistakes about a year, but since some months ago it started to randomly shutdown (sometimes it suddenly shutdown). We have clean reinstalled proxmox in...
  2. C

    High memory usage with ZFS

    Hello, I'm having a issues regarding the ram usage on our hypervisors. It seems there is ram going I don't know where. The hypervisor has 70GB of usable total ram. The current arc usage is 9GB according to arc_summary. I've calculated the amount of ram used by each LXC containers on the host...
  3. M

    Proxmoz 5.4 from ISO missing ZFS conf ?

    Hello, I installed 5.4 from iso, and I cannot find /etc/modprobe.d/zfs.conf to be able to limit the ARC. Am I missing something ? Thanks
  4. M

    Proxmox 6.1 with ZFS - High IO and Server Crash

    I cannot get my head around this, as I`m experiencing some very weird server IO delay and server crash. It seems I have this exact same issue [1][2]. The setup has ZFS + ZIL + L2ARC, however the RAM was getting used up to 100+ GB and the L2ARC was (and is set) to 150GB/read/write on the SSD...
  5. M

    [PVE 6.0] Cannot set ZFS arc_min and arc_max

    Hello, Just installed fresh pve 6.0 on 2 servers, the 2 are identical : root@proxmox02:~# pveversion pve-manager/6.0-2/865bbe32 (running kernel: 5.0.15-1-pve) I installed with ZFS for root partition : root@proxmox02:~# zpool list NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG...
  6. Y

    [SOLVED] Backup causes ZFS: arc_reclaim/arc_prune to nearly freeze system

    Hi, I'm have a backup-job scheduled which will daily backup my system. Sometimes while running the backup, the system will spawn one arc_reclaim and lots of arc_prune processes. All of these processes will eat up the CPU time and cause the VMs which are still running to run into (timeout)...
  7. C

    arc_prune stuck in D state

    Hello, There seems to be a problem with one of our server where the arc_prune is stuck in D state. Sync from the initramfs-update never completes and wait on something which make me believe it's the arc_prune. The server is a Dell R710 with 142GB ram and SSDs I also have a bunch of errors...
  8. S

    How much RAM for ZFS ARC + VMs on Proxmox?

    Hello, I'm currently close to building my new Proxmox rig and since ZFS is a first time for me, I was wondering about the need for RAM in my setup. I will run a 4x480GB SSD setup in RAID10 with ZFS. System memory is 64GB ECC RAM. Now, I will run 3 VMs for a start, needing 24GB, 8GB and 8GB of...

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