# Snapshots occasionally fail

**URL:** <https://discuss.elastic.co/t/snapshots-occasionally-fail/295866>\
**Category:** Elasticsearch\
**Tags:** snapshot-and-restore\
**Created:** [January 31, 2022, 5:20pm UTC](https://discuss.elastic.co/t/snapshots-occasionally-fail/295866 "2022-01-31T17:20:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![AnotherCorpoDrone](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/anothercorpodrone/32/101119_2.png) [@AnotherCorpoDrone](https://discuss.elastic.co/u/AnotherCorpoDrone)\
**Post date:** [January 31, 2022, 5:20pm UTC](https://discuss.elastic.co/t/snapshots-occasionally-fail/295866/1 "2022-01-31T17:20:24Z")

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Hi all,

We're having fairly frequent issues with our pre-prod environment snapshots failing. We're using Azure as our repo, all nodes can see it and it passes the normal validation steps.

I can only see a couple of lines where the scheduled snapshot ran

```auto
[2022-01-31T04:08:04,031][WARN][o.e.s.SnapshotShardsService] [SERVER-A01] [[wazuh-alerts-4.x-2022.01.26][0]][AzureRepo:testweekly-2022.01.31-h-27i5gar7q_sjaqdft-dw/uNkTzbvySkK2w1Ue620Z8A] failed to snapshot shard
org.elasticsearch.common.util.concurrent.UncategorizedExecutionException: Failed execution

```

We retried it later today and it completed successfully but there's some warnings, not sure if they have any relevance to the failures?

```auto
[2022-01-31T12:51:41,698][WARN][o.e.r.b.BlobStoreRepository] [SERVER-A01] [AzureRepo] Unknown blob in the repository: index-sXY0MaVZRZm0QfSrG127_w
[2022-01-31T12:51:41,698][WARN][o.e.r.b.BlobStoreRepository] [SERVER-A01] Could not find a readable index-N file in a non-empty shard snapshot directory [[testsnapshots][indices][MO0xJTo5SSSw6XGfluGBTw][0]]

```

Here's a longer log file including the traces: [[2022-01-31T04:08:04,031][WARN][o.e.s.SnapshotShardsService] [SERVER-A01] [[waz - Pastebin.com](https://pastebin.com/m0VrPNwj)

\*Edit to say that it's not always the same shard or indices. Today it's a Wazuh index, but we've see it from WinlogBeats, FileBeat and Metricbeat indices.

---

<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:** [February 28, 2022, 5:21pm UTC](https://discuss.elastic.co/t/snapshots-occasionally-fail/295866/2 "2022-02-28T17:21:01Z")

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