08.存儲Cinder→5.場景學習→01.LVM Volume

時間 2019-12-01

標籤存儲 cinder 場景學習 01.lvm lvm 欄目 Linux 简体版

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查看配置文件

Cinder 支持多種 volume provider，LVM 是默認的 volume provider。Devstack 安裝以後，/etc/cinder/cinder 已經配置好了 LVM

配置定義了名爲「lvmdriver-1」的 volume provider，也稱做 back-end。其 driver 是 LVM，LVM 的 volume group 名爲「stack-volumes-lvmdriver-1」。能夠查看：

root@controller:~# vgdisplay
  --- Volume group ---
  VG Name               stack-volumes-default
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  1
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                0
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               24.00 GiB
  PE Size               4.00 MiB
  Total PE              6143
  Alloc PE / Size       0 / 0   
  Free  PE / Size       6143 / 24.00 GiB
  VG UUID               Kn0tXW-wiOv-SE1F-zGQ2-iqIK-wsl6-UHG6ux
   
  --- Volume group ---
  VG Name               stack-volumes-lvmdriver-1
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  4
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               24.00 GiB
  PE Size               4.00 MiB
  Total PE              6143
  Alloc PE / Size       5849 / 22.85 GiB
  Free  PE / Size       294 / 1.15 GiB
  VG UUID               VnFxRc-Vi1T-hyTw-z6Xt-sfyP-Se12-klZOj8

root@cinder:~# grep -Ev '^#|^$' /etc/cinder/cinder.conf
[DEFAULT]
...
default_volume_type = lvmdriver-1
enabled_backends = lvmdriver-1
...
[lvmdriver-1]
...
volume_group = stack-volumes-lvmdriver-1
volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver
volume_backend_name = lvmdriver-1