On Fri, Apr 25, 2014 at 7:10 PM, Julian Andres Klode <j...@debian.org> wrote:
> On Fri, Apr 25, 2014 at 06:43:07PM +0200, Kay Sievers wrote:
>> On Fri, Apr 25, 2014 at 3:51 PM, Julian Andres Klode <j...@debian.org> wrote:
>> > I received the following bug report in Debian about
>> > gummiboot.
>> >
>> > On Sun, Apr 20, 2014 at 10:04:23AM +0200, Philipp Kern wrote:
>> >> Package: gummiboot
>> >> Version: 44-1
>> >> Severity: important
>> >>
>> >> gummiboot fails to install if there is a preexisting EFI boot loader in
>> >> the fallback location (e.g. after a successful installation of Windows):
>> >>
>> >> pkern@simplex ~ % sudo gummiboot install --path=/boot/efi
>> >> Created /boot/efi/EFI/gummiboot.
>> >> Copied /usr/lib/gummiboot/gummibootx64.efi to
>> >> /boot/efi/EFI/gummiboot/gummibootx64.efi.
>> >> Failed to rename /boot/efi/EFI/Boot/BOOTX64.EFI~ to
>> >> /boot/efi/EFI/Boot/BOOTX64.EFI: File exists
>> >
>> > As we can see here, it tries to do an atomic replace of the boot loader,
>> > but this fails because /boot/efi (we need to use /boot/efi in Debian
>> > instead
>> > of /boot, because our kernel images are installed in /boot) is FAT32 and
>> > that does not seem to allow replacements.
>>
>> It works just fine here on a FAT partition. I have no idea why it
>> would go wrong.
>
> It seems to be a matter of lower vs. uppercase, for example:
>
> $ ls -l EFI/Boot/
> -rwxr-xr-x 1 root root 78107 Apr 11 00:25 bootx64.efi
> # mv y EFI/Boot/BOOTX64.efi
> mv: cannot move 'y' to 'EFI/Boot/BOOTX64.efi': File exists
>
> But:
> # mv y EFI/Boot/bootx64.efi
>
> works as intended. Strace shows the difference:
>
> rename("y", "EFI/Boot/BOOTX64.efi") = -1 EEXIST (File exists)
> rename("y", "EFI/Boot/bootx64.efi") = 0
>
> It does work in some cases though. I'm not entirely sure what is
> broken here.
>
> The file system is mounted in utf8 which produces the warning
> [ 2.998918] FAT-fs (sdb1): utf8 is not a recommended IO charset for FAT
> filesystems, filesystem will be case sensitive!
> which probably causes this. I'm not sure why it is mounted with
> utf-8, though.
I have it mounted without any specific options:
http://cgit.freedesktop.org/systemd/systemd/tree/src/efi-boot-generator/efi-boot-generator.c#n108
which results in:
rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro
Kay
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