增加底层块设备的大小后，pvresize 似乎没有调整大小

Question

我增加了用作 LVM PV 的分区的大小，但运行 pvresize 似乎没有看到额外的空间：

cuttle:~# fdisk -l /dev/vda

Disk /dev/vda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 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: 0x00027dbb

   Device Boot      Start         End      Blocks   Id  System
/dev/vda1   *           1          31      248976   83  Linux
/dev/vda2              32        2610    20715817+  8e  Linux LVM

其中说 vda2 大约是 20gigs

cuttle:~# pvdisplay
  --- Physical volume ---
  PV Name               /dev/vda2
  VG Name               debian
  PV Size               4.76 GiB / not usable 3.08 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              1217
  Free PE               0
  Allocated PE          1217
  PV UUID               tehZic-5vfN-rsrm-B8lN-lpgc-yQT1-ioH1V0

所以目前的 pv 大约是 4-5 gigs

cuttle:~# pvresize -v /dev/vda2
    Using physical volume(s) on command line
    Archiving volume group "debian" metadata (seqno 12).
    No change to size of physical volume /dev/vda2.
    Resizing volume "/dev/vda2" to 9975981 sectors.
    Updating physical volume "/dev/vda2"
    Creating volume group backup "/etc/lvm/backup/debian" (seqno 13).
  Physical volume "/dev/vda2" changed
  1 physical volume(s) resized / 0 physical volume(s) not resized

pvresize 说“物理卷 /dev/vda2 的大小没有变化”

cuttle:~# pvdisplay
  --- Physical volume ---
  PV Name               /dev/vda2
  VG Name               debian
  PV Size               4.76 GiB / not usable 3.08 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              1217
  Free PE               0
  Allocated PE          1217
  PV UUID               tehZic-5vfN-rsrm-B8lN-lpgc-yQT1-ioH1V0

并且 pv 的大小没有改变。

不知道我还能做什么来使用额外的空间。我想我可以将分区的大小调整为 pv 的大小，然后添加第二个分区，但在我看来，我在这里尝试做的事情确实应该可行。

Answer 1

部分探针 /dev/vda

人部分探针

名称partprobe - 通知操作系统分区表更改

概要 partprobe [-d] [-s] [设备...]