[systemd-devel] systemd blocks update kernel partition table

[Mantas Mikulėnas]

On Thu, Nov 22, 2018 at 12:39 PM Eberhard Stoll <e-stl at gmx.de> wrote:

> It seems nothing from userspace holds the partitions. Is there a
> possibility for a 'hidden' mount or ext4 fs driver occupies the device
> nodes?
>

It could be that they remain mounted within another mount namespace. You
don't have any weird udev rules which call `mount`, do you?

If you have a recent util-linux, run `sudo lsns -t mnt` to see live
namespaces. For each non-kernel process ID in the list, run something like
`findmnt -F /proc/$PID/mountinfo` (or `cat` the file). If you don't, then
`grep mmcblk1 /proc/*/mountinfo` should do the job as well.

-- 
Mantas Mikulėnas
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