# Elasticsearch 2.4.x shard data not removed from disk

**URL:** <https://discuss.elastic.co/t/elasticsearch-2-4-x-shard-data-not-removed-from-disk/122089>\
**Category:** Elasticsearch\
**Created:** [March 1, 2018, 2:05pm UTC](https://discuss.elastic.co/t/elasticsearch-2-4-x-shard-data-not-removed-from-disk/122089 "2018-03-01T14:05:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jaul](https://avatars.discourse-cdn.com/v4/letter/j/a9adbd/32.png) [@jaul](https://discuss.elastic.co/u/jaul)\
**Post date:** [March 1, 2018, 2:05pm UTC](https://discuss.elastic.co/t/elasticsearch-2-4-x-shard-data-not-removed-from-disk/122089/1 "2018-03-01T14:05:32Z")

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Hi,

We are experiencing an unbalance on our cluster, and after some manual shard reallocation, we saw that there was no disk space freed at the time.

After a quick check on the logs, we saw that lucene failed to acquire a lock:  
org.apache.lucene.store.LockObtainFailedException: Can't lock shard

I found another thread following the same problem, but without any response and how to proceed:

> [@Unbalanced disk usage with ES 2.4.x](https://discuss.elastic.co/t/unbalanced-disk-usage-with-es-2-4-x/108591/8):
>
> I managed to get new logs after trying to add new nodes to the cluster. I've got many logged errors like the one bellow, after ES moved a few shards. [2017-11-29 16:19:36,609][DEBUG][cluster.service] [els10] processing [indices\_store ([[v3-large-customer-data-60][14]] active fully on other nodes)]: execute [2017-11-29 16:19:36,609][DEBUG][indices.store] [els10] [v3-large-customer-data-60][14] failed to delete unallocated shard, ignoring org.apache.lucene.store.LockObtainFa…

We are experiencing exactly the same issue: how to proceed to remove such files safely?

Thanks in advance,

Best

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 29, 2018, 2:05pm UTC](https://discuss.elastic.co/t/elasticsearch-2-4-x-shard-data-not-removed-from-disk/122089/2 "2018-03-29T14:05:32Z")

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