Ceph 回填和可用空间减少
[英]Ceph backfilling and available space decrease
问题描述
I've recently just added an osd to my cluster and it started backfilling.
我最近刚刚在我的集群中添加了一个 osd，它开始回填。 The new osd disk max space is added to the cluster max size as expected.新的 osd 磁盘最大空间按预期添加到集群最大大小。 But there is a strange behaviour i can't understand.但是有一个我无法理解的奇怪行为。 While backfilling is going on my max available space keeps decreasing.在进行回填时，我的最大可用空间不断减少。 Is this expected behaviour?这是预期的行为吗？ Will there be a available space increase after backfilling is done?回填完成后是否会增加可用空间？
1 个解决方案
解决方案1
1 已采纳 2021-03-30 08:10:59
Yes, this is expected.是的，这是意料之中的。 I don't know the exact mechanism requiring this but during recovery/backfill the PGs that have to be remapped take additional space.我不知道需要这个的确切机制，但在恢复/回填期间，必须重新映射的 PG 会占用额外的空间。 After the remapping is finished you should see the expected results.重新映射完成后，您应该会看到预期的结果。
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