Doug Ledford <dledford@xxxxxxxxxx> writes:
> Originally, mdadm used /var/run/mdadm/mdadm.map file to store the
> temporary mappings of incrementally added devices to device names.
> Unfortunately, this breaks incremental assembly if used early in the
> booting process. Specifically, root may still be read only. Since
> incremental assembly is largely a udev specific feature, and udev
> needs a writable /dev tmpfs mount even when root is still read only,
> it's safer to put our mdadm.map file in /dev/md so that we can write
> to the map file no matter how early in the boot process we are
> attempting to use incremental assembly.
What about /lib/init/rw?
You say largely udev specific so there might not be an udev running
and no tmpfs on /dev.
MfG
Goswin
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