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Translations:ReleaseNotes/Liberty/43/zh-tw

Revision as of 07:55, 27 October 2015 by WebberGuo (talk | contribs)
  • 如果你是從Kilo版本來的，再升級到Liberty之前請先升級到最新版本。由於bug https://bugs.launchpad.net/nova/+bug/1474074 修正從Kilo版本訪問Liberty節版本節點問題
  • RAM 和 CPU分配比率現在是由nova-compute所定義的(所以每個compute節點)。分配率也需要提供scheduler服務。取決於compute節點是否運行 Kilo 或是 Liberty，分配比率表現不同 : 如果compute節點運行Kilo該compute的節點CPU and RAM預設設定將會是在controller的nova.conf上，或是compute節點是Liberty那麼你就可以配置compute分配率為CPU and RAM。為了給操作者提供的分配率所有compute節點，預設分配比勒將是在nova.conf設定為0.0(即使對於controller)。這並不代表分配率實際上是0.0，指示操作者提供那些在下一個版本之前 (例如 Mitaka)。需要了解的是，預設配置扔然是16.0為cpu_allocation_ratio 和 1.5為ram_allocation_ratio。
  • nova-compute should be upgraded to Liberty code before upgrading Neutron services per the new "network-vif-deleted" event: https://review.openstack.org/#/c/187871/
  • Rootwrap filters must be updated after release to add the 'touch' command.
    • There is a race condition between imagebackend and imagecache mentioned in the Launchpad Bug 1256838.
    • In this case if base image is deleted by ImageCacheManager while imagebackend is copying the image to instance path, then the instance goes in to error state.
    • In order to resolve this issue, there is a need to add 'touch' command in compute.filters along with the change https://review.openstack.org/#/c/217579/.
    • In case of a race condition, when libvirt has changed the base file ownership to libvirt-qemu while imagebackend is copying the image, then we get permission denied error on updating the file access time using os.utime. To resolve this error we need to update the base file access time with root user privileges using 'touch' command.
  • The DiskFilter is now part of the scheduler_default_filters in Liberty per https://review.openstack.org/#/c/207942/ .
  • Per https://review.openstack.org/#/c/103916/ you can now only map one vCenter cluster to a single nova-compute node.
  • The Libvirt driver parallels has been renamed to virtuozzo
  • Orphaned tables - iscsi_targets, volumes - have been removed.
  • The default paste.ini has been updated to use the new v2.1 API for all endpoints, and the v3 endpoint has been removed. A compatibility mode middlewear is used to relax the v2.1 validation for the /v2 and /v1.1 endpoints.
  • The code for DB schema downgrades has now been removed: https://blueprints.launchpad.net/nova/+spec/nova-no-downward-sql-migration
  • The default DB driver we test against is now pymysql rather than Python-MySQL
  • The "powervm" hv_type shim has been removed. This only affects users of the PowerVC driver on stackforge which are using older images with hv_type=powervm in the image metadata.
  • The minimum required version of libvirt in the Mitaka release will be 0.10.2. Support for libvirt < 0.10.2 is deprecated in Liberty: https://review.openstack.org/#/c/183220/
  • The libvirt.remove_unused_kernels config option is deprecated for removal and now defaults to True: https://review.openstack.org/#/c/182315/
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