Mount filesystem with DAX enabled on RAM
I am trying to mount a filesystem with DAX feature on RAM.
I used this answer to load
brd module and get
/dev/ram0. Then I tried all 3 filesystems that support DAX: ext2, ext4 and xfs.
However, when I use
-o dax flag with
mount, I get this error:
wrong fs type, bad option, bad superblock on /dev/ram0, missing codepage or helper program, or other error
dmesg | tail I see the following issue:
(ram0): DAX unsupported by block device.
Is this an incorrect way to achieve my initial goal, mounting a filesystem with DAX on RAM, or what could I be doing wrong?
I saw this question but I do not think
-t ramfs does what I want, it won’t appear in
df -h list.
5.10.0-14-amd64 linux kernel version.
It seems that
DAX support was removed from
brd module. There is a patch from 2017.