Bug#783990: efivarfs is a separate fs and needs moutning

The Wanderer wanderer at fastmail.fm
Fri Jul 16 15:47:51 BST 2021

On 2021-07-16 at 10:23, Ian Jackson wrote:

> Control: tags -1 patch
> Thorsten Glaser writes ("Re: Bug#783990: efivarfs is a separate fs and needs moutning"):
>> This is not as easy as it sounds:
>> tglase at tglase-nb:~ $ sudo mount -t efivarfs efivarfs /sys/firmware/efi/efivars
>> mount: /sys/firmware/efi/efivars: mount point does not exist.
>> 32|tglase at tglase-nb:~ $ sudo mkdir -p /sys/firmware/efi/efivars
>> mkdir: cannot create directory ‘/sys/firmware/efi’: Operation not permitted
>> This is on amd64 without EFI (classical BIOS, no CSM).
> Oh.
> I guess this should be done if /sys/firmware/efi/efivars exists, then.
> Can you confirm that that directory doesn't exist for you ?

A possible additional complicating factor: on my system (tracking
current testing, which I suspect is likely to turn into stable fairly
soon), with sysvinit as the active init system, this directory already
exists and is already mounted.

I'm not sure what's making the difference (unless this is already fixed
for testing, and you're only discussing whether to backport the fix to
current stable, which I think doesn't sound like it is the case), and
I'm not sure where to look to try to find out - but whatever fix is
found for anyone experiencing this problem, it'll be important to make
sure it doesn't break people for whom this *is* working.

   The Wanderer

The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all
progress depends on the unreasonable man.         -- George Bernard Shaw

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