26.01.2018 17:47, Christophe Yayon пишет: > Hi Austin, > > Thanks for your answer. It was my opinion too as the "degraded" seems to be flagged as "Mostly OK" on btrfs wiki status page. I am running Archlinux with recent kernel on all my servers (because of use of btrfs as my main filesystem, i need a recent kernel). > > Your idea to add a separate entry in grub.cfg with rootflags=degraded is attractive, i will do this... > > Just a last question, i thank that it was necessary to add "degraded" option in grub.cfg AND fstab to allow boot in degraded mode. I am not sure that only grub.cfg is sufficient... > Yesterday, i have done some test and boot a a system with only 1 of 2 drive in my root raid1 array. No problem with systemd, Are you using systemd in your initramfs (whatever implementation you are using)? I just tested with dracut using systemd dracut module and it does not work - it hangs forever waiting for device. Of course, there is no way to abort it and go into command line ... Oh, wait - what device names are you using? I'm using mount by UUID and this is where the problem starts - /dev/disk/by-uuid/xxx will not appear unless all devices have been seen once ... ... and it still does not work even if I change it to root=/dev/sda1 explicitly because sda1 will *not* be announced as "present" to systemd until all devices have been seen once ... So no, it does not work with systemd *in initramfs*. Absolutely. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
