[raid5] 3 disks, after tests 2 spares disks

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Howdy all :-)

I've a pc-test raid5 using mdadm 2.6.7.2-3 (debian stable)

3 sata disks with raid5 (1 spare disk) = total 3 disks

Everything ok :-)

For purpose tests while raid5 had active I disconnected 2 disks.

Now I tried to assemble raid5 but I can't :-(

mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1 /dev/sdc1

mdadm: /dev/md0 assembled from 1 drive and 2 spares - not enough to start
the array

because mdadm see 1 active device and 2 spare disks.
Why?

I need revert 1 spare device to active device but I don't understand how.

What I will to do?

For hours I looking for any solution but nothing..

Thanks

Pol

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