Milan Broz ha scritto:
[..]
The whole problem was that the size of device was wrongly calculated
from the debug:
> # Device size 16777216, offset 16777216.
This is apparently device size covering only LUKS2 header (default
LUKS2 takes 16MB),
no data at all - then the error is expected.
Ok ..but, not shure to have understand correctly :-\
[..]
All you need to do here is just to allocate requested size for data +
16M for header.
(I have no idea why the original post tries to do is such complicated
way.)
Also you do not need to physically write the file, sparse file
creation is much
faster here (try sizes in GB), just run (dd can do this using seek=...
option too)
truncate disk.img -s 100M
Right!
[..]
[..]
just run "cryptsetup luksFormat disk.img" and "cryptsetup open disk.img
mybackupdisk"
[..]
genisoimage -R -J -joliet-long -graft-points -V $VOL_NAME -o
/dev/mapper/mybackupdisk $DIR_TO_COPY
This losetup is automatic on luksClose (so not needed) if you remove
explicit loop allocation above.
# close the device
cryptsetup luksClose /dev/mapper/mybackupdisk && \
losetup -d /dev/loop1
This losetup is automatic on luksClose (so not needed) if you remove
explicit loop allocation above.
Milan
Fine, nevertheless, the problem is still there!
Indeed building a DVD (or CDROM) with this procedure, obtain the same
block error:
Nov 19 13:56:36 localhost colord-sane: io/hpmud/pp.c 627: unable to
read device-id ret=-1
Nov 19 13:57:05 localhost kernel: [ 2470.017097] device-mapper: table:
253:2: len=2093055 not aligned to h/w logical block size 2048 of sr2
Nov 19 13:57:05 localhost kernel: [ 2470.017099] device-mapper: core:
Cannot calculate initial queue limits
Nov 19 13:57:05 localhost kernel: [ 2470.017102] device-mapper: ioctl:
unable to set up device queue for new table.
Nov 19 13:57:05 localhost gnome-shell[2243]: Unable to mount volume
Volume cifrato da 1,7 GB: Gio.IOErrorEnum: Error unlocking /dev/sr2:
Failed to activate device: Invalid argument
What I should do for create an iso aligned to h/w logical block size?
:-\
I've try using Gnome Shell automount and manually, same!
I'm going out crazy!! :-D
Thanks again!
Davide
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