The SET_BITMAP_FILE ioctl currently doesn't have a compat entry, so on
64-bit systems a 32-bit mdadm will fail:
Sep 20 16:34:52 caspian kernel: ioctl32(mdadm:8056): Unknown cmd fd(3)
cmd(8004092b){00} arg(00000004) on /dev/md0
The fix is to build a 64-bit mdadm or apply the following patch (compile
tested only).
--
Paul
--- ./include/linux/compat_ioctl.h.orig 2006-09-22 11:14:53.000000000 -0400
+++ ./include/linux/compat_ioctl.h 2006-09-22 11:15:24.000000000 -0400
@@ -121,6 +121,7 @@ ULONG_IOCTL(START_ARRAY)
COMPATIBLE_IOCTL(STOP_ARRAY)
COMPATIBLE_IOCTL(STOP_ARRAY_RO)
COMPATIBLE_IOCTL(RESTART_ARRAY_RW)
+ULONG_IOCTL(SET_BITMAP_FILE)
/* DM */
COMPATIBLE_IOCTL(DM_VERSION_32)
COMPATIBLE_IOCTL(DM_REMOVE_ALL_32)
