虚拟机无分区的情况下,扩磁盘

---直接磁盘做成物理盘,没有分区
[root@awpservnew ~]# fdisk -l

Disk /dev/sdb: 558.3 GB, 558345748480 bytes
255 heads, 63 sectors/track, 67881 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

[root@awpservnew ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x243265b6.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

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/sdb: 558.3 GB, 558345748480 bytes
255 heads, 63 sectors/track, 67881 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x243265b6

   Device Boot      Start         End      Blocks   Id  System

Command (m for help): 

直接使用/dev/sdb 没有分区

[root@awpservnew ~]# pvdisplay 
  --- Physical volume ---
  PV Name               /dev/sdb
  VG Name               datavg
  PV Size               450.00 GiB / not usable 3.00 MiB
  Allocatable           yes 
  PE Size               4.00 MiB
  Total PE              115199
  Free PE               25599
  Allocated PE          89600
  PV UUID               HZeexY-0epd-9Rjk-Cy75-VlR7-AxWi-8G8X2v
   
  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               vg_awpserv
  PV Size               39.51 GiB / not usable 3.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              10114
  Free PE               0
  Allocated PE          10114
  PV UUID               vMejRA-VCe0-E8dM-vzaj-UfiX-Pn0v-8fVd9B


[root@awpservnew ~]# pvresize /dev/sdb
  Physical volume "/dev/sdb" changed
  1 physical volume(s) resized / 0 physical volume(s) not resized


[root@awpservnew ~]# pvdisplay 
  --- Physical volume ---
  PV Name               /dev/sdb
  VG Name               datavg
  PV Size               520.00 GiB / not usable 3.00 MiB
  Allocatable           yes 
  PE Size               4.00 MiB
  Total PE              133119
  Free PE               43519
  Allocated PE          89600
  PV UUID               HZeexY-0epd-9Rjk-Cy75-VlR7-AxWi-8G8X2v
   
  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               vg_awpserv
  PV Size               39.51 GiB / not usable 3.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              10114
  Free PE               0
  Allocated PE          10114
  PV UUID               vMejRA-VCe0-E8dM-vzaj-UfiX-Pn0v-8fVd9B



[root@awpservnew ~]# lvextend -L +100G /dev/mapper/datavg-datalv
  Extending logical volume datalv to 430.00 GiB
  Logical volume datalv successfully resized

[root@awpservnew ~]# resize2fs /dev/mapper/datavg-datalv
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/mapper/datavg-datalv is mounted on /data; on-line resizing required
old desc_blocks = 21, new_desc_blocks = 27