From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?UTF-8?B?Vm9qdMSbY2ggS2xldGXEjWth?= <vojta.kletecka@gmail.com>
Subject: Re: Data recovery
Date: Thu, 21 Sep 2017 15:22:46 +0200
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 <59C309C7.9030300@youngman.org.uk> <796e5efe-04af-60c7-4ef0-f9962e456061@turmel.org>
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I tried both reasonable versions without success:

sudo mdadm --assemble --verbose --force /dev/md127 /dev/sd[ce]1
[sudo] password for vojtech:
mdadm: looking for devices for /dev/md127
mdadm: /dev/sdc1 is identified as a member of /dev/md127, slot 2.
mdadm: /dev/sde1 is identified as a member of /dev/md127, slot 1.
mdadm: no uptodate device for slot 0 of /dev/md127
mdadm: added /dev/sdc1 to /dev/md127 as 2 (possibly out of date)
mdadm: added /dev/sde1 to /dev/md127 as 1
mdadm: /dev/md127 assembled from 1 drive - not enough to start the array.

sudo mdadm --assemble --verbose --force /dev/md127 /dev/sd[de]1
mdadm: looking for devices for /dev/md127
mdadm: /dev/sdd1 is identified as a member of /dev/md127, slot 0.
mdadm: /dev/sde1 is identified as a member of /dev/md127, slot 1.
mdadm: added /dev/sde1 to /dev/md127 as 1
mdadm: no uptodate device for slot 4 of /dev/md127
mdadm: added /dev/sdd1 to /dev/md127 as 0
mdadm: failed to RUN_ARRAY /dev/md127: Input/output error