Hi,
according to block/ioctl.c drbd_ioctl() is supposed to return -ENOCTLCMD
instead of -EINVAL when it doesn't handle that specific ioctl:
/* Most of the generic ioctls are handled in the normal fallback path.
This assumes the blkdev's low level compat_ioctl always returns
ENOIOCTLCMD for unknown ioctls. */
If we don't do this all ioctl's like BLKGETSIZE64 and friends return
EINVAL which makes drbd almost unusable with a 32bit userspace on e.g.
amd64 (except for the trivial case where you create the fs direcly on
the /dev/drbd? device). With this one liner partitioning and lvm
work as expected, please apply:
--- drbd0.7-0.7.19/drbd/drbd_fs.c.orig 2006-07-03 19:21:57.000000000 +0200
+++ drbd0.7-0.7.19/drbd/drbd_fs.c 2006-07-03 19:22:27.000000000 +0200
@@ -1451,7 +1451,7 @@
break;
default:
- err = -EINVAL;
+ err = -ENOIOCTLCMD;
}
/* out: */
up(&mdev->device_mutex);
Cheers,
-- Guido
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