Cannot create blob store – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch fails to initialize a blob store, which is used for storing snapshots. This could be due to insufficient permissions, incorrect configuration, or lack of disk space. To resolve this issue, you can check and adjust the file system permissions, verify the blob store configuration in your Elasticsearch settings, or free up some disk space. Additionally, ensure that the path specified for the blob store exists and is accessible.

This guide will help you check for common problems that cause the log ” cannot create blob store ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: blobstore, repositories.

Log Context

Log “cannot create blob store” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 try {
 store = createBlobStore();
 } catch (RepositoryException e) {
 throw e;
 } catch (Exception e) {
 throw new RepositoryException(; "cannot create blob store"; e);


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