On Tue, Aug 31, 2021 at 03:44:38PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@xxxxxxxxxx>
>
> The V4 filesystem format is deprecated in the upstream Linux kernel. In
> September 2025 it will be turned off by default in the kernel and five
> years after that, support will be removed entirely. Warn people
> formatting new filesystems with the old format, particularly since V4 is
> not the default.
>
> Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> ---
> mkfs/xfs_mkfs.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
> index 53904677..b8c11ce9 100644
> --- a/mkfs/xfs_mkfs.c
> +++ b/mkfs/xfs_mkfs.c
> @@ -2103,6 +2103,15 @@ _("Directory ftype field always enabled on CRC enabled filesystems\n"));
> }
>
> } else { /* !crcs_enabled */
> + /*
> + * The V4 filesystem format is deprecated in the upstream Linux
> + * kernel. In September 2025 it will be turned off by default
> + * in the kernel and in September 2030 support will be removed
> + * entirely.
> + */
> + fprintf(stdout,
> +_("V4 filesystems are deprecated and will not be supported by future versions.\n"));
> +
> /*
> * The kernel doesn't support crc=0,finobt=1 filesystems.
> * If crcs are not enabled and the user has not explicitly
>
Looks good to me.
Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
Do we need to update the mkfs filter in fstests now?
Cheers,
Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx
