Snapshot Creation and Verification Error: "Failed to Create Blob Container"

OpenSearch
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1

Hi,

I’m encountering an issue with snapshot creation using an NFS storage class for backups. The error details are as follows:

  1. Snapshot Retrieval Request**:
    A request to retrieve snapshots for the repository (_cat/snapshots) results in an error indicating a failure to create the blob container. The error message mentions a “stale file handle” related to the NFS path used for storing backups.
    {“error”:{“root_cause”:[{“type”:“exception”,“reason”:“failed to create blob container”}],“type”:“repository_exception”,“reason”:“[is_backup] Unexpected exception when loading repository data”,“caused_by”:{“type”:“exception”,“reason”:“failed to create blob container”,“caused_by”:{“type”:“file_system_exception",“reason”:"/opensearch-backup/backup: Stale file handle”}}},“status”:500}

  2. Snapshot Verification Request:
    A verification request (_snapshot/_verify) for the same repository also fails with a similar error, stating that the path is not accessible on the cluster-manager node.
    {“error”:{“root_cause”:[{“type”:“exception”,“reason”:“failed to create blob container”}],“type”:“repository_verificatioption”,“reason”:“[is_backup] path is not accessible on cluster-manager node”,“caused_by”:{“type”:“exception”,“reason”:d to create blob container",“caused_by”:{“type”:“file_system_exception”,“reason”:“/opensearch-backup/backup: Stale file handle**”}}},“status”:500}

Both errors suggest a potential issue with the NFS storage configuration.

Could you provide guidance on resolving this issue or recommend best practices for using NFS as a storage class for OpenSearch snapshots?

Thanks in advance!