writeback

Situation: - ZFS on NVME, 1GB/s nvme read speed - ARC (in ram) size about 120GB - fully heated pve-manager/8.1.4 (running kernel: 6.5.13-1-pve) CPU: E5-2683 v4 This CPU has a very poor per-core performance. This leads to: - Windows 10 VM, Virtio-SCSI Single, iothread, 128kb block, cache=none ->...

Hi all, Running a reasonably small proxmox and ceph deployment, four servers split across two buildings in our school, then a fifth witness server (which doesn't host any VMs/storage) in a third location. In order to sustain things in the event of failure, we run 4/2 copies on ceph, so any two...