On Tue, 11 Sep 2018 at 17:22, Igor Cicimov <icici...@gmail.com> wrote:
> > > On Tue, 11 Sep 2018 11:45 am Joel Brunetti <joelbrune...@gmail.com> wrote: > >> Hey Team, >> >> I'm having trouble booting a previously bootable system. >> This system has been in use since very shortly before the Stretch release >> and has always been Stretch. >> I'm using Grub to boot a fully encrypted system. Each drive is >> partitioned with GPT and encrypted using LUKS. The drives are then used >> together with BTRFS. >> >> This system has worked with some minor boot problems (Which I thought >> were fixed by adding the bios_grub flag to my partition and the pmbr_boot >> flag to my disk) for at least a year. >> Today I can not boot the system. I suspect I've made it worse for trying >> to repair it so I will jump to where I am now. >> >> When I boot I get on either device: >> error: no such device: (UUID of my decrypted luks volume / btrfs pool) >> error: unknown filesystem >> > > Maybe check that the uuid hasn't changed somehow if mounting by uuid in > /etc/fstab > The uuid in my fstab is correct. Unfortunately at boot it is not present because grub fails to open the luks devices. I managed to get my system to work by sending my btrfs sub volume to another drive that was partitioned with MBR. There was no change to the filesystem. I chrooted in and installed grub and with a few other minor changes to mount points my system is working again. I have a poor understanding of GPT but I think GPT with grub and luks encryption is a little unstable. Thanks for the help. > > >> I've chrooted onto the system using a usb key. >> I can open my encrypted drives and mount the btrfs filesystem. >> I suspected a bad kernel or grub update so I: >> update initramfs -u -k all >> update-grub >> grub-install /dev/sda >> grub-install /dev/sdb >> >> This gives the above errors when I boot. >> >> When I inspected /boot/grub/grub.cfg I noted it is missing "insmod >> cryptodisk" and other encryption related modules. This is despite >> /etc/default/grub containing "GRUB_ENABLE_CRYPTODISK=y". I tried restoring >> /boot/grub/grub.cfg from a snapshot that does include those modules and >> then grub-install to both drives again but to no avail. >> >> I'm really at a loss and could really use some help in restoring my >> system. >> >> Thanks, >> Joel >> >> >> >>
