[jira] [Created] (KAFKA-21061) AtomicMoveNotSupportedException(Invalid cross‑device link) when deleting topic on mdadm software‑RAID

["evan.zhao (Jira)" <ji...@apache.org>]

evan.zhao created KAFKA-21061:
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             Summary: AtomicMoveNotSupportedException(Invalid cross‑device link) when deleting topic on mdadm software‑RAID
                 Key: KAFKA-21061
                 URL: https://issues.apache.org/jira/browse/KAFKA-21061
             Project: Kafka
          Issue Type: Bug
    Affects Versions: 3.9.1
            Reporter: evan.zhao
         Attachments: image-2026-09-10-16-40-49-605.png, image-2026-09-10-16-41-21-375.png

h3. Environment
 * OS: Linux
 * Kafka Version: {{3.9.1}}
 * Storage: Data directory resides on *mdadm software RAID array (/dev/md126)*
 * Filesystem: ext4 on md raid device

!image-2026-09-10-16-41-21-375.png|width=463,height=299!
h3. Problem Description

When deleting a topic, Kafka tries to rename topic partition directory to a {{-delete}} suffixed marker directory via {{{}Utils.atomicMoveWithFallback(){}}}. It throws {{{}java.nio.file.AtomicMoveNotSupportedException: Invalid cross‑device link{}}}.

After this exception, Kafka marks the entire log directory as {*}offline{*}, stops serving all replicas under this log dir. Internal {{__consumer_offsets}} partitions in the same log directory become unavailable, group metadata and offset loading fails, consumer groups stop working.

Stack trace snippet:

!image-2026-09-10-16-40-49-605.png|width=548,height=210!



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