File Systems

Systems need filing!

notes

  • mkfs wipes an existing filesystem
    • uuid changes

zfs

swap

  • uses hard drive as memory page cache
  • swapoff /swapfile to disable
  • fallocate -l 2G /swapfile && mkswap /swapfile to create
  • swapon /swapfile to enable
    • load zram module and setup swap partition for compression

ntfs

  • journal file system
  • ntfsfix -d /dev/sdd1 to fix dirty bit on unclear shutdown
  • mount ntfs
    • sudo mkdir -p /run/media/$USER/Elements/
    • sudo mount.ntfs /dev/sdd1 /run/media/jam/Elements -o rw,nodev,nosuid,uid=1000,gid=1000,windows_names,uhelper=udisks2

lustre

  • HPC filesystem
  • can use zfs as object store
  • pure no io metadata server
  • zero copy rdma with nvidia gpu direct storage