Arch Linux

MS1

Member

Registered: 2018-02-02

Posts: 95

Partition will not stay unmounted

I have a partition set to mount in fstab like this

/dev/sda3 /mnt/cup f2fs noauto,x-systemd.automount 0 0

How can I stop systemd from mounting it after I manually "umount /mnt/cup" it so I can run fsck.f2fs on it?

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,412

Re: Partition will not stay unmounted

Remove the automount parameter would be the obvious choice, the less obvious choice would be masking/disabling the relevant mount units that systemd will have generated. https://wiki.archlinux.org/index.php/Sy … sing_units

WorMzy

Administrator

From: Scotland

Registered: 2010-06-16

Posts: 13,682

Website

Re: Partition will not stay unmounted

To elaborate on the above -- when you add x-systemd.automount to the mount options, systemd creates an automount unit for that device which watches the mount point and mounts the filesystem whenever something accesses it. To stop that behaviour, you need to stop the automount unit.

# systemctl stop mnt-cup.automount

---

Sakura:-
Mobo: MSI MAG X570S TORPEDO MAX // Processor: AMD Ryzen 9 5950X @4.9GHz // GFX: AMD Radeon RX 5700 XT // RAM: 32GB (4x 8GB) Corsair DDR4 (@ 3000MHz) // Storage: 1x 3TB HDD, 6x 1TB SSD, 2x 120GB SSD, 1x 275GB M2 SSD

Making lemonade from lemons since 2015.

MS1

Member

Registered: 2018-02-02

Posts: 95

Re: Partition will not stay unmounted

I stopped the automount service and /mnt/cup is not mounted but something thinks it still is

# mount|grep cup
#

# fsck.f2fs -a /dev/sda3
Info: Fix the reported corruption.
	Error: In use by the system!

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,346

Re: Partition will not stay unmounted

# mount | grep sda3
# lsof | grep sda3

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

MS1

Member

Registered: 2018-02-02

Posts: 95

Re: Partition will not stay unmounted

For both commands I get no response, just a new prompt.

loqs

Member

Registered: 2014-03-06

Posts: 19,100

Re: Partition will not stay unmounted

Please post the full output from `mount`
Edit:
Also the output of

cat /etc/fstab
file /etc/mtab

Last edited by loqs (2019-09-24 20:18:09)