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    Steps for moving VMs from 3.x to 5.x

    1. Manually upload VM disks to new machine. 2. Upload config files to new machines. 3. Edit config is something is needed. 4. Boot VM
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    my NVMEs suck

    For ZFS don't forget SYNC writes are written to ZFS LOG device. If you don't have external ZFS LOG device then the pool become as LOG device too. Thats mean double writes. If SYNC is important and you want good write performance then add single good SATA/NVME SSD as ZFS pool LOG device.
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    i/O priority on ZFS - is this possible?

    As I know ZFS is missing I/O priority. Its works like FIFO. Like Win98 system :-)
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    Virtual box,No support for KVM virtualisation detected

    To run KVM you need direct access to CPU. Others VM like LXC or Openvz .... do not need direct CPU access.
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    Cluster setup and ZFS pools

    You can export pool and import pool with new name.
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    Boot problem zfs

    EFI problem? Have no xp with it.
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    Resize root zfs on node

    # zpool list -> it is RAW data sizes and its have nothing to do with available space If you want more free space in rpool/ROOT/pve-1 then 1. Turn off swap. 2. Remove rpool/swap 3. Create rpool/swap with less space like 5G 4. Format swap and mount Result -> free space for zfs pool rpool
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    Upgrade PVE 5.1-41 to 5.2-1 Failed to start Mount ZFS

    It is not a bug. Creating pool "MY_POOL" the mount point will be set to /MY_POLL. You can set mountpoint on creating pool with -m ZFS will mount fs only on empty catalog. Proxmox install script is missing: # zfs set mountpoint=none rpool/ROOT # zfs set mountpoint=none rpool
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    ZFS vs PERC H710P Mini

    bit rot | bit roll | silence corruption - the data corruption then HDD give bad data or the cable leads to distort information.
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    ZFS vs PERC H710P Mini

    How about bit rot ?
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    ZFS vs PERC H710P Mini

    If you know and love ZFS why you go to HW Raid? it must be you don't need data protection.
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    Additional ZFS Volume and VM Snapshots

    ZFS dont have protection option from deleting zvol. But you may protect in other way. Part 1 Snaps How the Proxmox and Console do snapshots on ZFS? Console -> zfs snap zvol@name Proxmox -> zfs snap zvol@name -> put info in VM config file. Looking snapshosts from console you can see all...
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    Existing Raid 10 import

    If your RAID is made from ZFS then you don't need to worry about HDD names.