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Hi,
I'm trying to create an XFS image to be written on a Blue Ray disk,
encrypted. I'm told that DVDs have a sector size of 2 KiB, thus it is
beter to tell the formatting utility of that, because when creating the
image file it is on a hard disk where sector size is 512B.
Basic procedure:
truncate -s 50050629632 image_1_50.img
losetup -f image_1_50.img
cryptsetup luksFormat --type luks2 --label blueray50img /dev/loop0
cryptsetup luksOpen /dev/loop0 cr_nombre
So now I have the image file loop mounted on /dev/mapper/cr_nombre, and I
do (this is the step I ask about):
Telcontar:/home_aux/BLUERAY_OPS # mkfs.xfs -L ANameUnseen -b size=2048
/dev/mapper/cr_nombre
meta-data=/dev/mapper/cr_nombre isize=512 agcount=4, agsize=6109184 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=0, rmapbt=0
= reflink=0
data = bsize=2048 blocks=24436736, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=2048 blocks=11932, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
Telcontar:/home_aux/BLUERAY_OPS #
Is that the correct command line to achieve written sectors of 2 KiB?
I ask because I see isize=512 and sectsz=512 and I wonder.
- --
Cheers,
Carlos E. R.
(from openSUSE 15.0 x86_64 at Telcontar)
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