Re: boot error: zfs + luks + grub

[Andrei Borzenkov]

08.07.2016 22:01, James пишет:
> Thanks Andrei,
> 
> Still haven't issues. Here's the output of the bootinfoscript, as requested:
> 
> http://pastebin.com/EeG0GKkM
> 
> Here's what grub returns when I reboot:
> 
> Attempting to decrypt master key...
> Enter passphrase for hd2,msdos2 (<uuid>):
> Slot 0 opened
> Enter passphrase for hd3,msdos2 (<uuid>):
> Slot 0 opened
> Enter passphrase for hd1,msdos2 (<uuid>):
> Slot 0 opened
> error: no such cryptodisk found.
> Entering rescue mode...
> grub rescue>
> 

This really looks like this disk is not seen during boot. This can
happen; what "ls" at grub rescue prompt shows? How many disks are present?

How are this disks attached? 6 disks are listed; could you provide dmesg
from boot where you collected BIS output?

Thanks for providing it BTW, I fixed minor glitch (zfs_member exception).

> Any thoughts / help greatly appreciated.
> 
> On Sun, Jun 19, 2016 at 8:46 AM, Andrei Borzenkov <address@hidden>
> wrote:
> 
>> 18.06.2016 01:03, James пишет:
>>> Thanks Andrei, this helped. I rebuilt my initramfs and updated grub.
>>> Definitely a step in the right direction.
>>>
>>> Now when I reboot my system GRUB will prompt me for a master key. I
>> provide
>>> the password and successfully unlock (presumably) one of the crypto
>> disks.
>>>
>>> It then prompts me for another password. It says that it opens slot 0,
>> but
>>> then GRUB immediately fails.
>>>
>>> Please see attached screenshot.
>>>
>>> Any thoughts on why this is happening?
>>>
>>
>> Not really. When you run grub-install, it creates
>> /boot/grub/i386-pc/load.cfg (I assume you are using legacy BIOS
>> platform; substitute for x86_64-efi otherwise) that is then enbedded in
>> core.img. Could you post content of this file? Alternatively, if you are
>> using legacy BIOS, could you run
>> https://github.com/arvidjaar/bootinfoscript and make results available?
>>
>>> On Wed, Jun 15, 2016 at 11:28 PM, Andrei Borzenkov <address@hidden>
>>> wrote:
>>>
>>>> 16.06.2016 00:52, James пишет:
>>>>> Hello,
>>>>>
>>>>> Hoping to get some help with a (seemingly basic) setup I'm struggling
>>>> with.
>>>>>
>>>>> I'm using Ubuntu Xenial (16.04) and installing on ZFS on LUKS which, as
>>>> far
>>>>> as I have read, is supported. A reboot after going through the
>>>> installation
>>>>> process results in an ugly error:
>>>>>
>>>>> error: no such cryptodisk found.
>>>>> Entering rescue mode...
>>>>> grub rescue>
>>>>>
>>>> ...
>>>>
>>>>>
>>>>> # cat /etc/default/grub
>>>>> GRUB_DEFAULT=0
>>>>> GRUB_HIDDEN_TIMEOUT=0
>>>>> GRUB_HIDDEN_TIMEOUT_QUIET=true
>>>>> GRUB_TIMEOUT=10
>>>>> GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
>>>>> GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
>>>>> GRUB_CMDLINE_LINUX=""
>>>>>
>>>>
>>>> For historical reasons grub does not add support for cryptodisk unless
>>>>
>>>> GRUB_ENABLE_CRYPTODISK=y
>>>>
>>>> is present. Please add it and re-run grub-install and grub-mkconfig.
>>>>
>>>> I begin to think that at least grub-install should unconditionally probe
>>>> for cryptodisk.
>>>>
>>>>
>>>
>>
>>
>