Partition 1 does not start on physical sector boundary.分区信息不正常

[root@v1 ~]# df -h

Filesystem      Size  Used Avail Use% Mounted on

/dev/sda2        20G  3.3G   16G  18% /

tmpfs            32G  228K   32G   1% /dev/shm

/dev/sda1       190M   32M  148M  18% /boot

[root@v1 ~]# fdisk -l





WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.









Disk /dev/sda: 2997.9 GB, 2997920727040 bytes

255 heads, 63 sectors/track, 364476 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk identifier: 0x00000000





   Device Boot      Start         End      Blocks   Id  System

/dev/sda1               1      267350  2147483647+  ee  GPT

Partition 1 does not start on physical sector boundary.

[root@v1 ~]# fdisk /dev/sda





WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.









WARNING: The size of this disk is 3.0 TB (2997920727040 bytes).

DOS partition table format can not be used on drives for volumes

larger than (2199023255040 bytes) for 512-byte sectors. Use parted(1) and GUID 

partition table format (GPT).









The device presents a logical sector size that is smaller than

the physical sector size. Aligning to a physical sector (or optimal

I/O) size boundary is recommended, or performance may be impacted.





WARNING: DOS-compatible mode is deprecated. It's strongly recommended to

         switch off the mode (command 'c') and change display units to

         sectors (command 'u').





Command (m for help): p





Disk /dev/sda: 2997.9 GB, 2997920727040 bytes

255 heads, 63 sectors/track, 364476 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk identifier: 0x00000000





   Device Boot      Start         End      Blocks   Id  System

/dev/sda1               1      267350  2147483647+  ee  GPT

Partition 1 does not start on physical sector boundary.

Command (m for help):

背景：1.dell   c6220II服务器，使用的lsi原厂阵列控制器

2.这款阵列器可以做超过2个硬盘的raid1,

3.用这款阵列器做好6个硬盘的raid5，在安装centOS6.6时，在分区这步竟然没有“强制为主分区”这个选项，而在raid1设置时，这里会正常出现这个选项

4.应该是基于第三点，才导致raid5安装出来的系统，fdisk /dev/sda 只出现一个分区信息

原因：应该是硬盘cylinder和sector显示的问题

解决：用gdisk来分区，用法和fdisk差不多，gdisk print显示的sector就是正常的，用yum gdisk安装gdisk工具，说到这里提醒一下，centOS6.6 64bit的partprobe不起作用，分区完要重启。