Re: mdadm crash with lots of devs

On Monday 2012-07-09 23:50, NeilBrown wrote:

quoted

Using mdadm-3.2.2 from openSUSE_12.1:

# modprobe brd rd_size=1 rd_nr=4096
# mdadm -C /dev/md9 -l 10 -n 384 /dev/ram{0..383}
mdadm: Defaulting to version 1.2 metadata
Segmentation fault (core dumped)

It isn't specific to large numbers of devices.

Indeed not, it seems to be related to the rather small size
of the device :)
Using an rd_size=64 (with that old mdadm version) will emit
a warning rather than crash, and rd_size=1024 seems to be
the first working size.