From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
If someone runs mkfs with rtinherit=1, a realtime volume configured, and
a protofile that creates a regular file in the filesystem, mkfs will
error out with "Function not implemented" because userspace doesn't know
how to allocate extents from the rt bitmap. Catch this specific case
and hand back a somewhat nicer explanation of what happened.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
mkfs/proto.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/mkfs/proto.c b/mkfs/proto.c
index 9db8fe2d6447..20a7cc3bb5d5 100644
--- a/mkfs/proto.c
+++ b/mkfs/proto.c
@@ -244,6 +244,12 @@ newfile(
nb = XFS_B_TO_FSB(mp, len);
nmap = 1;
error = -libxfs_bmapi_write(tp, ip, 0, nb, 0, nb, &map, &nmap);
+ if (error == ENOSYS && XFS_IS_REALTIME_INODE(ip)) {
+ fprintf(stderr,
+ _("%s: creating realtime files from proto file not supported.\n"),
+ progname);
+ exit(1);
+ }
if (error) {
fail(_("error allocating space for a file"), error);
}
