It almost ruined my day, but the solution is simple: when creating the mirror use "--mirrorlog mirrored --alloc anywhere". In the case of a configured lvm mirror, you can follow a procedure like this:
lvconvert -m 0 <LV Path> lvconvert -m 1 --mirrorlog mirrored --alloc anywhere <LV Path> For example, in my case it was lvconvert -m 0 /dev/vg0/lv0 lvconvert -m 1 --mirrorlog mirrored --alloc anywhere /dev/vg0/lv0 -- -- <signature> <name> Gerasimos Melissaratos </name> <title> Systems Administrator </title> <tel> +306979045121 </tel> </signature>
