Re: mdadm crash with lots of devs

[Jan Engelhardt <jengelh@xxxxxxx>]

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