Microsoft recommends the XFS filesystem for SQL Server on Linux data volumes. Would it be possible to allow us to specify which filesystem should be used when provisioning volumes?

From https://learn.microsoft.com/en-us/sql/linux/sql-server-linux-performance-best-practices?view=sql-server-ver16:

SQL Server supports both ext4 and XFS filesystems to host the database, transaction logs, and additional files such as checkpoint files for in-memory OLTP in SQL Server. Microsoft recommends using XFS filesystem for hosting the SQL Server data and transaction log files.