Unable to delete snapshot file – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.1

Briefly, this error occurs when Elasticsearch is unable to delete a snapshot file due to insufficient permissions, a locked file, or a network issue. To resolve this, you can try the following: 1) Check and adjust the file permissions to ensure Elasticsearch has the necessary access. 2) Ensure the file is not being used or locked by another process. 3) If the snapshot is stored on a remote server, verify the network connection and the server’s status. 4) If the snapshot is corrupted, you may need to manually delete it from the filesystem.

This guide will help you check for common problems that cause the log ” [{}] Unable to delete snapshot file [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: repositories, snapshot, blobstore, delete.

Log Context

Log “[{}] Unable to delete snapshot file [{}]” classname is BlobStoreRepository.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    private void deleteSnapshotBlobIgnoringErrors(final SnapshotInfo snapshotInfo; final String blobId) {
        try {
            snapshotFormat.delete(blobContainer(); blobId);
        } catch (IOException e) {
            if (snapshotInfo != null) {
                logger.warn(() -> new ParameterizedMessage("[{}] Unable to delete snapshot file [{}]";
                    snapshotInfo.snapshotId(); blobId); e);
            } else {
                logger.warn(() -> new ParameterizedMessage("Unable to delete snapshot file [{}]"; blobId); e);


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