Re: GRUB bug with Btrfs multiple devices

[Goffredo Baroncelli <kreijack@inwind.it>]

On 27/11/2019 02.35, Chris Murphy wrote:
> On Tue, Nov 26, 2019 at 4:53 PM Chris Murphy <lists@colorremedies.com> wrote:
>>
>> On Tue, Nov 26, 2019 at 2:11 PM Goffredo Baroncelli <kreijack@libero.it> wrote:
>>>
>>> I think that the errors is due to the "rescan" logic (see grub commit [1]). Could you try a more recent grub (2.04 instead of 2.02) ?
>>
>> Yes Fedora Rawhide has 2.04 in it, so I'll give that a shot next time
>> I rebuild this particular laptop, which should be relatively soon; or
>> even maybe I can reproduce this problem in a VM with two virtio
>> devices.
> 
> I was able to just update to the Fedora 2.04-4.fc32 packages. It's not
> upstream's but it's a quick and dirty way to give it a shot. Turns
> out, the same errors happen, although the line number for efidisk.c
> has changed:
> https://photos.app.goo.gl/aKWRYhJkkJRDtC1W7
> 
> For grins, I dropped to a grub prompt, and issued ls and get a different result:
> https://photos.app.goo.gl/MvL9QZa6zGsiktAf9

Looking at the second picture, it seems that grub had problem to access the disk 0..3 not only when is doing a btrfs activity.
No problem accessing hd4 and hd5*

Could you enable the debug, doing

	set pager=1
	set debug=all

?

> 
> Also for what it's worth, the Btrfs in question is on hd5,gpt4 and
> hd5gpt5 - same physical device, different partitions.
> 
> 


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