On Sat, Jul 30, 2016 at 07:05:25PM -0400, myglc2 wrote:
> > I might write a more detailed blog post about this; there is a little
> > subtlety with the non-automatic determination of dependencies between
> > devices, so one needs to make sure that the partitions to be assembled
> > are present before the mdadm command is executed.
> I rebooted and the array is not assembled ;-(
Strange! But I will also tell you the subtlety ;-) Here is a trick to use
(thanks to Ludovic):
(define md0
(mapped-device
(source (list "/dev/sda2" "/dev/sdb2"))
(target "/dev/md0")
(type raid-device-mapping)))
(operating-system
...
(mapped-devices (list md0))
(file-systems (cons (file-system
(title 'device)
(device "/dev/md0")
(dependencies (list md0))
(mount-point "/")
(type "ext4"))
%base-file-systems))
The "dependencies" field makes sure that the file system is only mounted
after the array is assembled; I am not sure that this is your problem,
but you might want to give it a try.
In the long run, this should be reprogrammed: Devices and file systems
should wait until all their "inputs" are present, or at least wait for
a reasonable time.
Andreas
