PowerStore：迁移会话创建失败，并显示错误：The system encountered unexpected backend errors.
Summary: 如果某些快照在接下来的几分钟内到期，则为大型volume_group和大量快照（超过 100 个）创建迁移会话可能会失败。
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Symptoms
为大型volume_group和大量快照创建迁移会话失败。
Cause
如果由于迁移与快照到期之间的争用，某些快照在接下来的几分钟内到期，则为大型volume_group或大量快照（即超过 100 个）创建迁移会话可能会失败。
Resolution
重试迁移会话创建。
如果失败，请识别将在接下来的 30 分钟内到期的volume_group的任何快照，并将其到期时间延长一小时，然后重试创建迁移会话。
请联系技术支持 以获得帮助。
Affected Products
PowerStoreArticle Properties
Article Number: 000180761
Article Type: Solution
Last Modified: 05 Sept 2025
Version: 2
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