NAME

       vfs_io_uring - Implement async io in Samba vfs using io_uring of Linux (>= 5.1).

SYNOPSIS

       vfs objects = io_uring

DESCRIPTION

       This VFS module is part of the samba(7) suite.

       The io_uring VFS module enables asynchronous pread, pwrite and fsync using the io_uring
       infrastructure of Linux (>= 5.1). This provides much less overhead compared to the usage
       of the pthreadpool for async io.

       This module SHOULD be listed last in any module stack as it requires real kernel file
       descriptors.

EXAMPLES

       Straight forward use:

                   [cooldata]
                path = /data/ice
                vfs objects = io_uring

OPTIONS

       io_uring:num_entries = NUMBER_OF_QUEUE_ENTRIES
           The number of entries in the submission queue. The maximum allowed value depends on
           the kernel version and the kernel will roundup the value to a power of 2.

           The default is '128'.

       io_uring:sqpoll = BOOL
           Use the IORING_SETUP_SQPOLL feature.

           The default is 'no'.

SEE ALSO

       io_uring_setup(2).

VERSION

       This man page is part of version 4.19.5-Ubuntu of the Samba suite.

AUTHOR

       The original Samba software and related utilities were created by Andrew Tridgell. Samba
       is now developed by the Samba Team as an Open Source project similar to the way the Linux
       kernel is developed.