# java.nio.file.FileSystemException **URL:** \ **Category:** Elasticsearch\ **Created:** [July 2, 2018, 9:30am UTC](https://discuss.elastic.co/t/java-nio-file-filesystemexception/138160 "2018-07-02T09:30:04Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![piingluo](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/piingluo/32/26051_2.png) [@piingluo](https://discuss.elastic.co/u/piingluo)\ **Post date:** [July 2, 2018, 9:30am UTC](https://discuss.elastic.co/t/java-nio-file-filesystemexception/138160/1 "2018-07-02T09:30:04Z")
after i delete an indices, the log keeps getting the follow error: ```auto [2018-07-02T17:24:30,396][WARN][o.e.g.DanglingIndicesState] [node-2] failed to list dangling indices java.nio.file.FileSystemException: /elasticsearch/data/elasticsearch/nodes/0/indices/yblFfRpgQki_X8XtDGI36A/_state: Structure needs cleaning at sun.nio.fs.UnixException.translateToIOException(UnixException.java:91) ~[?:?] at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102) ~[?:?] at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107) ~[?:?] at sun.nio.fs.UnixFileSystemProvider.newDirectoryStream(UnixFileSystemProvider.java:427) ~[?:?] at java.nio.file.Files.newDirectoryStream(Files.java:457) ~[?:1.8.0_144] at org.elasticsearch.gateway.MetaDataStateFormat.loadLatestState(MetaDataStateFormat.java:275) ~[elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.gateway.MetaStateService.loadIndicesStates(MetaStateService.java:93) ~[elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.gateway.DanglingIndicesState.findNewDanglingIndices(DanglingIndicesState.java:131) ~[elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.gateway.DanglingIndicesState.findNewAndAddDanglingIndices(DanglingIndicesState.java:116) ~[elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.gateway.DanglingIndicesState.processDanglingIndices(DanglingIndicesState.java:81) ~[elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.gateway.DanglingIndicesState.clusterChanged(DanglingIndicesState.java:185) ~[elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.cluster.service.ClusterApplierService.lambda$callClusterStateListeners$7(ClusterApplierService.java:509) ~[elasticsearch-6.2.2.jar:6.2.2] at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) [?:1.8.0_144] at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:742) [?:1.8.0_144] at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580) [?:1.8.0_144] at org.elasticsearch.cluster.service.ClusterApplierService.callClusterStateListeners(ClusterApplierService.java:506) [elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.cluster.service.ClusterApplierService.applyChanges(ClusterApplierService.java:489) [elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.cluster.service.ClusterApplierService.runTask(ClusterApplierService.java:432) [elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.cluster.service.ClusterApplierService$UpdateTask.run(ClusterApplierService.java:161) [elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:573) [elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.runAndClean(PrioritizedEsThreadPoolExecutor.java:244) [elasticsearch-6.2.2.jar:6.2.2] at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.run(PrioritizedEsThreadPoolExecutor.java:207) [elasticsearch-6.2.2.jar:6.2.2] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_144] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_144] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144] ``` ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [July 2, 2018, 10:35am UTC](https://discuss.elastic.co/t/java-nio-file-filesystemexception/138160/2 "2018-07-02T10:35:25Z")
How did you remove the index? All nodes were up when you did that or your cluster was on "bad" state? ---
**Author:** ![piingluo](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/piingluo/32/26051_2.png) [@piingluo](https://discuss.elastic.co/u/piingluo)\ **Post date:** [July 2, 2018, 11:08am UTC](https://discuss.elastic.co/t/java-nio-file-filesystemexception/138160/3 "2018-07-02T11:08:11Z")
when i use the delete API， the cluster state is green, and every node is ok. the path.data is mount on a ceph block storage. Is it possible that the file system is damaged？ ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [July 2, 2018, 11:20am UTC](https://discuss.elastic.co/t/java-nio-file-filesystemexception/138160/4 "2018-07-02T11:20:08Z")
> [@piingluo](#): > > the path.data is mount on a ceph block storage. 😱 OMG. This not supported. May be yes the FS is corrupted then. ---
**Author:** ![piingluo](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/piingluo/32/26051_2.png) [@piingluo](https://discuss.elastic.co/u/piingluo)\ **Post date:** [July 2, 2018, 11:30am UTC](https://discuss.elastic.co/t/java-nio-file-filesystemexception/138160/5 "2018-07-02T11:30:07Z")
my development environment use a ceph as backend storage， but it works well. what file system does es support? ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [July 2, 2018, 12:27pm UTC](https://discuss.elastic.co/t/java-nio-file-filesystemexception/138160/6 "2018-07-02T12:27:37Z")
Local disks are preferred. Look at [https://www.elastic.co/blog/performance-considerations-elasticsearch-indexing](https://www.elastic.co/blog/performance-considerations-elasticsearch-indexing) (although old). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 30, 2018, 12:27pm UTC](https://discuss.elastic.co/t/java-nio-file-filesystemexception/138160/7 "2018-07-30T12:27:39Z")
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