Failed to delete file during snapshot cleanup – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch fails to delete a specific file during the process of snapshot cleanup. This could be due to insufficient permissions, a locked file, or a disk space issue. To resolve this, you can try the following: 1) Check and modify the file permissions if necessary, 2) Ensure the file is not being used or locked by another process, 3) Free up disk space if it’s running low, and 4) Check the health of your file system as it might be corrupted.

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

Log Context

Log “[{}] [{}] failed to delete file [{}] during snapshot cleanup” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                try {
                    store.deleteQuiet("restore"; storeFile);
                } catch (IOException e) {
                    logger.warn("[{}] [{}] failed to delete file [{}] during snapshot cleanup"; shardId; snapshotId; storeFile);
        } catch (IOException e) {
            logger.warn("[{}] [{}] failed to list directory - some of files might not be deleted"; shardId; snapshotId);


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