Mon, 16 Nov 2020 14:28:54 -0800 Gordon Messmer <gordon.messmer at gmail.com>: > On 11/15/20 10:40 PM, Łukasz Posadowski wrote: > > > Sun, 15 Nov 2020 14:16:48 -0800 Gordon Messmer > > <gordon.messmer at gmail.com>: > > > > > >> Use metadata version 1.2 instead of 0.9. > >> > > Thanks, I'll try that. I'm use to metadata 0.9, because GRUB have > > (had?) some issue with the newer ones. > > > If that doesn't work, and you need to use metadata 0.9, then check > /etc/default/grub and make sure that GRUB_CMDLINE_LINUX contains > "rd.md.uuid=<THE UUID OF YOUR md0>". T.H.A.N.K Y.O.U. :) I was sure I had to pass uuid of the partition, not md0. It is working now. One last thing: since Linux Rescue CD does not recognize selinux, / mounted itself as read-only. Disabling SeLinux helped. I think I need to relabel all the files on a new host. So generally: - edit /etc/default/grub and grub2-mkconfig, - generate mdadm.conf (I think a copy of it resides inside initramfs), - fstab (root mounts anyway, so just for swap patition), - disable selinux, - generate initramfs with dracut. Big thanks to all of you. It was rough, but it's done. -- Łukasz Posadowski