I added debug into the kernel and observed /dev/vdb is being mounted by systemd:
[ 9.859895] mount: 1624 mount, parent 1 systemd [ 9.866398] mount: 1624 mount /dev/vdb
and also snap-confine is mounting mount too:
[ 9.966827] mount: 1663 snap-confine /mnt
Curiously, I've not seen any associated umounts.
I wonder if the namespace/confinement is causing the issue of not being able to see the mount. I need to debug this further.
I added debug into the kernel and observed /dev/vdb is being mounted by systemd:
[ 9.859895] mount: 1624 mount, parent 1 systemd
[ 9.866398] mount: 1624 mount /dev/vdb
and also snap-confine is mounting mount too:
[ 9.966827] mount: 1663 snap-confine /mnt
Curiously, I've not seen any associated umounts.
I wonder if the namespace/ confinement is causing the issue of not being able to see the mount. I need to debug this further.