Unable to preserve the last modified date of a file when copying between storage accounts

[andyinaus]

Which service(blob, file) does this issue concern?

file

Which version of the SDK was used?

version 2.0.1, 2.0.4

On which platform were you using? (.Net Framework version or .Net Core version, and OS version)

.Net Core 3.1.10

How can the problem be reproduced? It'd be better if the code caused the problem can be shared.

            var context = new DirectoryTransferContext
            {
                ProgressHandler = new Progress<TransferStatus>(progress =>
                {
                    var now = DateTime.UtcNow;

                    if (progress.NumberOfFilesTransferred - lastNumberOfFilesTransferred <= 500 && now - lastLogged < TimeSpan.FromMinutes(1))
                    {
                        return;
                    }

                    lastNumberOfFilesTransferred = progress.NumberOfFilesTransferred;
                    lastLogged = now;

                    var bytesPerSecond = progress.BytesTransferred / (now - start).TotalSeconds;
                    logger.Information($"Transferred {progress.BytesTransferred.Bytes().ToString("0.00")} / {totalString} at avg {bytesPerSecond.Bytes().ToString("0.00")} / sec. {progress.NumberOfFilesTransferred} files transferred so far.");
                }),
            };
            
await TransferManager.CopyDirectoryAsync(sourceFileDirectory, destFileDirectory, CopyMethod.ServiceSideAsyncCopy, new CopyDirectoryOptions {PreserveSMBAttributes = true, Recursive = true }, context, CancellationToken.None);

What problem was encountered?

When copying a file share directory between storage accounts, the Last Modified Date of a file/directory is not preserved even when PreserveSMBAttributes is set to true in CopyDirectoryOptions.

Have you found a mitigation/solution?

No