tree 76e8b5f447338ab783052665f2d3a8e7059ab65b
parent 1b228c98ceae9e6cbdf874360ff3c325fa6ac1ad
author Lars Ellenberg <lars.ellenberg@linbit.com> 1465856778 +0200
committer Jens Axboe <axboe@fb.com> 1465875784 -0600

drbd: fix for truncated minor number in callback command line

The command line parameter the kernel module uses to communicate the
device minor to userland helper is flawed in a way that the device
indentifier "minor-%d" is being truncated to minors with a maximum
of 5 digits.

But DRBD 8.4 allows 2^20 == 1048576 minors,
thus a minimum of 7 digits must be supported.

Reported by Veit Wahlich on drbd-dev.

Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>