一般來說，Linux創(chuàng)建分區(qū)使用fdisk命令，可以自動對齊磁盤。然而，fdisk無法處理大于2TB的磁盤文件。這種情況下，需要使用parted命令去創(chuàng)建分區(qū)。

parted創(chuàng)建分區(qū)需要手動指定分區(qū)開始與結(jié)束位置，可能會面臨磁盤不對齊的問題（提示：Warning: The resulting partition is not properly aligned for best performance.）
所以需要手動去計算分區(qū)起點來對齊磁盤。

Parted

[root@ARKITDBDR2 ~]# parted /dev/mapper/ORAu01
GNU Parted 2.1
Using /dev/mapper/ORAu01
Welcome to GNU Parted! Type 'help' to view a list of commands.

(parted) mklabel GPT
(parted) print
Model: Linux device-mapper (multipath) (dm)
Disk /dev/mapper/ORAu01: 6.05TB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags

(parted) mkpart primary 0.00T 100%
(parted) print
Model: Linux device-mapper (multipath) (dm)
Disk /dev/mapper/ORAu01: 6.05TB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
1 0.00TB 6.05TB 6.05TB primary

(parted) 
(parted) quit

計算分區(qū)起點

輸入0.00T有時候可以免于計算起點

mkpart primary 0.00T 100%

# cat /sys/block/sdb/queue/optimal_io_size
1048576
# cat /sys/block/sdb/queue/minimum_io_size
262144
# cat /sys/block/sdb/alignment_offset
0
# cat /sys/block/sdb/queue/physical_block_size
512

起點=(optimal_io_size + alignment_offset) / physical_block_size =  (1048576 + 0) / 512 = 2048s

所以分區(qū)命令是

mkpart primary 2048s 100%

檢查是否正確對齊

(parted) align-check optimal 1                                            
1 aligned

如果還有問題，則需要進一步修正，可以參考
https://bdoga.com/how-to-fix-warning-device-is-not-properly-aligned-with-parted/

格式化

mkfs.ext4 /dev/sdb1