xfs_mkfs: reflink conflicts with zoned file systems for now

Don't allow reflink on zoned file system until garbage collections learns
how to deal with shared extents and doesn't blindly unshare them.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>

diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
index e6adb345551e167517dad9f5107f5ff86005cbc8..9d84dc9cb4261ee5e562dd2a5e2e9deefada5092 100644 (file)
--- a/mkfs/xfs_mkfs.c
+++ b/mkfs/xfs_mkfs.c
@@ -2966,6 +2966,14 @@ _("rt extent size not supported on realtime devices with zoned mode\n"));
                        }
                        cli->rtextsize = 0;
                }
+               if (cli->sb_feat.reflink) {
+                       if (cli_opt_set(&mopts, M_REFLINK)) {
+                               fprintf(stderr,
+_("reflink not supported on realtime devices with zoned mode specified\n"));
+                               usage();
+                       }
+                       cli->sb_feat.reflink = false;
+               }
 
                /*
                 * Set the rtinherit by default for zoned file systems as they