SQL Server logs "blob data", viewable with journalctl

What does it mean when I run journalctl -u mssql-server.service and it says B blob data,

Sep 06 17:34:44 x230 systemd[1]: Stopping Microsoft SQL Server Database Engine...
Sep 06 17:34:44 x230 sqlservr[22239]: [200B blob data]
Sep 06 17:34:44 x230 sqlservr[22239]: [190B blob data]
Sep 06 17:34:51 x230 sqlservr[22239]: [73B blob data]
Sep 06 17:34:51 x230 sqlservr[22239]: [146B blob data]
Sep 06 17:39:51 x230 sqlservr[22239]: [73B blob data]
Sep 06 17:39:51 x230 sqlservr[22239]: [146B blob data]

I'm not running DDL commands either, nor inserting or updating blob data. But it is possible something like mssql-cli is doing that in the background.

This happens when there are unprintable characters in the output.

It seems sqlservr is outputting \r (or ^M) (line feed) characters.

You can view the raw data using: journalctl -u mssql-server.service --all

From what I can see, this appears to be the same content as /var/opt/mssql/log/errorlog, so that might be an easier way to view logs.

StackExchange Database Administrators Q#216958, answer score: 6