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  • 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
    

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  • 原文地址:https://www.cnblogs.com/hzcya1995/p/13352116.html
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