[systemd-devel] udev rule to mount ext4 with data=journal

Pascal K pascalkrauth at gmail.com
Wed Jun 14 08:11:00 UTC 2017

I try to achieve that regardless the device plugged to my embedded system
the mount will be in folder /media/"name_of_volume".

If I understand correctly for the usage of fstab I have to give a static
name for the mount point.

Thanks for pointing out the "nofail" option.

Best regards,

Lennart Poettering <lennart at poettering.net> schrieb am Mi., 14. Juni 2017
um 10:06 Uhr:

> On Wed, 14.06.17 07:30, Pascal K (pascalkrauth at gmail.com) wrote:
> > Hello everyone,
> >
> > I am new to this list and to udev (used mdev before).
> >
> > My goal: Mount a CFast card partioned with 2 partitions one FAT32 and one
> > EXT4, the EXT4 I would like to mount with option "data=journal"
> >
> > The Problem: from the console using mount the partition can be mounted
> with
> > mount -o "data=journal" ... but not from my udev rule. My rule results in
> > only the FAT32 partition being mounted.
> Note that we run udevd in its own mount namespace through MountFlags=,
> and this means no mounts will ever appear on the host anyway.
> Note that it is sufficient to mark mounts as "auto,nofail" in
> /etc/fstab to make sure they are mounted automatically as they appear
> without making the boot wait for it.
> Lennart
> --
> Lennart Poettering, Red Hat
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