云硬盘 EVS-使用fio工具测试性能，测试结果不对怎么办:检查分区的初始磁柱编号是否4KiB对齐

时间：2024-01-04 14:21:37

云硬盘 EVS

检查分区的初始磁柱编号是否4KiB对齐

登录云服务器并切换为root用户。

进行性能测试之前，请执行以下步骤，确认磁盘分区的初始磁柱编号是否已经4KiB对齐。

fdisk -lu

回显类似如下信息：

[root@ecs-centos sdc]# fdisk -lu

Disk /dev/xvda: 10.7 GiB, 10737418240 bytes, 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x7db77aa5

   Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *        2048    20968919    10483436   83  Linux

Disk /dev/xvdb: 10.7 GiB, 10737418240 bytes, 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/xvdc: 53.7 GiB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x3cf3265c

   Device Boot      Start         End      Blocks   Id  System
/dev/xvdc1            2048    41943039    20970496   83  Linux