CONAP-466401：请求增强功能：文件克隆拆分阻止创建快照

问题描述

手动或计划的Snapshot操作失败、并显示以下错误：
1/5/2019 09:05:00
Cluster1-01 ERROR wafl.snap.create.skip.reason: vol01 <UUID>:
Skipping creation of hourly.<time> Snapshot copy (Snapshot
operation not allowed due to clones backed by snapshots. Try again after
sometime.).
如果受影响的卷是SnapMirror关系的源卷、则手动或计划snapmirror update 可能会失败、并且last-transfer-error 显示：
Last Transfer Error: Failed to create Snapshot copy
<snapmirror.snapshotname> on volume <svm>:<volume>.
(Failed to create Snapshot copy <snapmirror.snapshotname> on
volume <svm_uuid>:<volume_name>. (Volume has clones backed
by snapshots))