3 -current ML にポスト

• で、再度 -current ML にポストすると、Toomas Soome氏<tsoome@me.com>から貴重な指摘が...

  "... and RAID luns with 512B sector size and 15TB!!! total size -
  are you really sure your BIOS can actually address 15TB lun (with
  512B sector size)? Note that the problem with large disks can hide
  itself till you have pool filled up enough till the essential
  files will be stored above the  limit meaning that you may have
  perfectly working¡ setup till at some point in time, after
  next update, it is suddenly not working any more."
  

  つまり

  1. RAIDコントローラ側で15TBの論理ブロックを切る
  2. BIOS側ではその上限値(2TB)までしか認識しない
  3. OS側では、BIOSの上限値を越えた書き込みをした時点で死ぬ
• 実際、レスキューディスクで確認したところ、確かに2TBの上限を確認⁽¹⁾

  OK lsdev -v
  disk devices:
      disk0:   BIOS drive C (31588352 X 512)
        disk0p1: FreeBSD boot        512KB
        disk0p2: FreeBSD UFS         13GB
        disk0p3: FreeBSD swap        771MB
      disk1:   BIOS drive D (4294967295 X 512)
        disk0p1: FreeBSD boot        512KB
        disk0p2: FreeBSD swap        128GB
        disk0p3: FreeBSD ZFS          19TB
  OK