Linux Guests

Linux Guest on BTRFS:

• BTRFS with single copy of meta, system and data
• I/O is better on modern guest Kernel 6.1 (vs 5.10)
• I/O is better whem VM storage is “no cache”
  • sync writes goes to ZFS ZIL
  • With “Writeback” cache - ZFS ZIL was not utilized so high like with “no cache”