[Linux-cluster] gnbd/clvm and device mapper : 256 deviceslimitation ?

[Sylvain COUTANT]

> could you share how you got
> device-mapper to create devices twice with the same major/minor numbers?

Quite easy :

for a in `seq 1 300`; do lvcreate -L 32M -n test$a myvg; done

This was able to create around 260 (don't remember the exact number) lvs before failing. The 20 last ones before failing (between 240 and 260) were created with duplicate major/minor (debian kernel 2.6.11.12).


Regards,

--
Sylvain COUTANT

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