Dne 9.3.2018 v 10:58 jitendra kumar khasdev napsal(a):
Hi All,
I wrote the basic target using device mapper framework. Using dmsetup utility
I am able to create device node under /dev/mapper/my_custom_mapper.
But when I do reboot the system, it lost the mapping. Is there any way by
which I can create mapping during boot like LVM does.
Hi
lvm2 is exactly solving this problem as it maintains consistent 'metadata' on
every device - so upon reboot devices are discovered and from their metadata
dm tables are actived/restored.
So are you looking for recreation of all the lvm2 infrastructure for this
relatively quite complex task ?
Or you just want to 'create' DM after kernel is booted ?
Or you even want to pass 'DM' table line on kernel boot option line - so even
your boot device is a 'DM' device ?
It's unclear which problem are you actually solving so please be more specific.
Regards
Zdenek
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