[PATCH v2 0/2] Have LUKS2 cryptomounts be useable with grub-probe

[Josselin Poiret <dev@jpoiret.xyz>]

Glenn Washburn <development@efficientek.com> writes:
> Its not clear to me, did you test a LUKS2 device with sector size 4096
> with this change? I believe DM does use 512-byte sectors internally,
> but it can create block devices that report and use other sector sizes.
> You can verfiy this by creating a 4096 sector size LUKS2 devices, open
> it with cryptsetup, and then run "blockdev --getbsz /dev/mapper/<dm name>".

You're right, blockdev does indeed report 4096.  Here is an updated
patch that parses the optional sector_size argument from the DM
parameters, I have checked that it does indeed set the right
log_sector_size.  I think it worked without it because you can
technically just read with a lower sector size, but better be safe
than sorry!

Josselin Poiret (2):
  devmapper/getroot: Have devmapper recognize LUKS2
  devmapper/getroot: Set up cheated LUKS2 cryptodisk mount from DM
    parameters

 grub-core/osdep/devmapper/getroot.c | 107 ++++++++++++++++++++++++++--
 1 file changed, 102 insertions(+), 5 deletions(-)

-- 
2.34.0