[OE-core] [PATCH v3] systemd: re-enable mount propagation for udevd

[Vincent Prince]

Hi all,

I have MountFlags=slave defined, and I use the following recipe to
automount usb stick without right issues:
https://github.com/nefethael/meta-random/blob/master/recipes-support/usbmount/usbmount_git.bb
I think we should keep this settings as it is.

What is the problematic use case?

Best regards,
Vincent

2018-02-23 2:23 GMT+01:00 Hongzhi, Song <hongzhi.song at windriver.com>:

> If MountFlags=slave, systemd-udevd mounts all block device,  such as
>
> '/dev/sda1' '/dev/mmcblk*' , in itself unit namespace. So other namespace,
>
> such as 'root user', has no access to use block device mentioned above.
>
>
> On 2018年02月23日 08:50, Otavio Salvador wrote:
>
>> On Thu, Feb 22, 2018 at 11:15 AM, Hongzhi.Song
>> <hongzhi.song at windriver.com> wrote:
>>
>>> MountFlags's default value is shared in systemd-udevd.service. But
>>> upstream
>>> sets MountFlags with slave just for keeping mounts done by udev private
>>> to
>>> udevd, which causes block device mounted by udev unvisable but being
>>> busy for
>>> host. So we revert it to shared to be propagated to host.
>>>
>>> Signed-off-by: Hongzhi.Song <hongzhi.song at windriver.com>
>>>
>> This is what the mountflag does. This does not explain WHY you need this
>> change.
>>
>>
> --
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