cinder对后端驱动要求的Minimum Features

本文介绍了Havana和Icehouse两个版本中关于存储的功能特性,包括卷的创建、删除、快照等,并详细阐述了Icehouse新增的扩展卷功能及卷状态统计信息的相关指标。

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Havana

  • Volume Create/Delete
  • Volume Attach/Detach
  • Snapshot Create/Delete
  • Create Volume from Snapshot
  • Get Volume Stats
  • Copy Image to Volume
  • Copy Volume to Image
  • Clone Volume

Icehouse

  • All of the above plus
  • Extend Volume

Volume Stats

Volume stats are used by the different schedulers for the drivers to providea report on their current state of the backend. The following should beprovided by a driver.

  • driver_version
  • free_capacity_gb
  • reserved_percentage
  • storage_protocol
  • total_capacity_gb
  • vendor_name
  • volume_backend_name

NOTE: If the driver is unable to provide a value for free_capacity_gb ortotal_capacity_gb, keywords can be provided instead. Please use 'unknown' ifthe array cannot report the value or 'infinite' if the array has no upperlimit.

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