Les Mikesell wrote:
On Tue, Sep 2, 2014 at 1:33 PM, m.roth@5-cent.us wrote:
<snip>
But sdd _should_ have the correct data - it just isn't being detected as a raid member. I think with smaller devices - or at least devices with smaller partitions and FD type in the MBR it would have worked automatically with the kernel autodetect.
<snip>
Anyway, the upshot was my manager was rather annoyed - I *should* have pulled sdc, and put in a new one, and just let that go. I still think it would have failed, given the inability of mdadm to find the info on sdd. We wound up just remaking the RAID, and rebuilding the mirror over the weekend.
I think either adding the ARRAY entry in /etc/mdadm.conf and rebooting or some invocation of mdadm could have revived /dev/md4 with /dev/sdd (and the contents you wanted) active.
Tried that. No joy.
mark