Recent content by homelabber

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    Write speeds fall off/VM lag during file copies ZFS

    @ertanerbek @LnxBil @guletz Ok so everyone was mentioning ARC cache at 8GB is not enough so I raised it to 20GB. I still have the same problem when doing a 5gigabyte file copy from my SSDs to my spinners. I was hovering at 16GB free ram in the Proxmox user interface for my pve server. I also...
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    Write speeds fall off/VM lag during file copies ZFS

    @ertanerbek @LnxBil Ok so there were a lot of suggestions: I disabled Discard on all the drives connected to the VM in question and this resulted in no improvement - 1. Disable discard on GUEST config. I checked "zfs get compression" and all my drives have compression enabled already - 2. You...
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    Write speeds fall off/VM lag during file copies ZFS

    @guletz I changed the scheduler only on my mirrored spinning drives to none and it had no effect on my problem. Do I need to do anything to force this change to immediately take effect like restart a service? root@pve1:~# echo "none" > /sys/block/sdc/queue/scheduler root@pve1:~# echo "none" >...
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    Write speeds fall off/VM lag during file copies ZFS

    @guletz So I was researching how to set the zfs_vdev_schedule = none and it looks like it is already set to none? Please see command below which returned none: cat /sys/block/sda/queue/scheduler [mq-deadline] none I read about it here: https://pve.proxmox.com/wiki/IO_Scheduler
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    Write speeds fall off/VM lag during file copies ZFS

    Is the reason that it gets laggy because ZFS has more overhead/works differently? Because when I passed through the drives to Windows Server and formatted NTFS there was no problem. I never setup SLOG device before. I already use the two SSDs as Raid 1 ZFS for the Proxmox OS and VMs so all the...
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    Write speeds fall off/VM lag during file copies ZFS

    @guletz - I have attached the results: 1) I shutdown the server, started it up waited about 8 minutes. 2) Ran arc_summary as root file 1-afterreboot.txt 3) Copied 5 gig ISO from Raid 1 spinning rust zfs drives to SSD, then renamed iso and copied from ssd zfs to raid 1 spinning rust -...
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    Write speeds fall off/VM lag during file copies ZFS

    Does anyone have any thoughts about this? Thanks all.
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    Write speeds fall off/VM lag during file copies ZFS

    I just did some of the offending transfers and kept refreshing free -m and it ranges between 3600-6600 MB free memory.
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    Write speeds fall off/VM lag during file copies ZFS

    Windows Server 2016 has 4-8GB assigned with balloon turned on. The other two containers have 3GB and 512MB assigned respectively. My PVE system is currently using 25GB out of 31.32GB. Windows VM .conf: agent: 1 balloon: 4096 bios: ovmf boot: cdn bootdisk: scsi0 cores: 3 cpu: host efidisk0...
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    Write speeds fall off/VM lag during file copies ZFS

    Proxmox 6.0-7 used for 1 Windows 2016 Server VM and a couple of Ubuntu containers Intel Core i7-6700K 32 GB non ecc ram. 2x ZFS 128K block size mirrored 960GB Seagate Nytro SSDs - OS install and VMs/containers 2x ZFS 128K block size mirrored 8TB HGST 7200RPM NAS Drives - 4TB File storage drive...