On Fri, Aug 19, 2016 at 01:32:07PM -0700, Darrick J. Wong wrote:
> Since the kernel doesn't currently support the realtime rmapbt,
> don't allow such filesystems to be mounted. Support will appear
> in a future release.
>
Makes sense to me, you can add:
Reviewed-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
> fs/xfs/xfs_super.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
> index 24ef83e..fd6be45 100644
> --- a/fs/xfs/xfs_super.c
> +++ b/fs/xfs/xfs_super.c
> @@ -1574,9 +1574,16 @@ xfs_fs_fill_super(
> }
> }
>
> - if (xfs_sb_version_hasrmapbt(&mp->m_sb))
> + if (xfs_sb_version_hasrmapbt(&mp->m_sb)) {
> + if (mp->m_sb.sb_rblocks) {
> + xfs_alert(mp,
> + "EXPERIMENTAL reverse mapping btree not compatible with realtime device!");
> + error = -EINVAL;
> + goto out_filestream_unmount;
> + }
> xfs_alert(mp,
> "EXPERIMENTAL reverse mapping btree feature enabled. Use at your own risk!");
> + }
>
> error = xfs_mountfs(mp);
> if (error)
>
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--
Carlos
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