"fuser -cu /mount_point" result shows many processes?

Chan Kim

7/26/24, 9:56 AM

I wanted to change the mount point name from /hdd_ext to /data1. So I checked what processes are using that directory. (ref : https://www.golinuxcloud.com/how-to-change-mount-point-name-in-linux/) But when i do `fuser -cu /hdd_ext/', I see so many somethings as below. They don't look like process IDs. I closed all the apps and opened only one terminal. How can I make those disappear??

ckim@ckim-ubuntu:~$ fuser -cu /hdd_ext/ /hdd_ext:
2584rce(ckim) 2590rce(ckim) 2592re(ckim) 2601re(ckim) 2618re(ckim) 2633re(ckim) 2640re(ckim) 2687re(ckim) 2707re(ckim) 2730re(ckim) 2734re(ckim) 2768re(ckim) 2781re(ckim) 2872re(ckim) 2886re(ckim) 2895re(ckim) 2896re(ckim) 2899rce(ckim) 2900rce(ckim) 2907rce(ckim) 2912rce(ckim) 2916rce(ckim) 2990re(ckim) 3037re(ckim) 3041re(ckim) 3042re(ckim) 3044re(ckim) 3046rce(ckim) 3058rce(ckim) 3063rce(ckim) 3068rce(ckim) 3077rce(ckim) 3085rce(ckim) 3095rce(ckim) 3099rce(ckim) 3104rce(ckim) 3113rce(ckim) 3119rce(ckim) 3126rce(ckim) 3133rce(ckim) 3137rce(ckim) 3139rce(ckim) 3172re(ckim) 3174re(ckim) 3175re(ckim) 3176re(ckim) 3177re(ckim) 3179re(ckim) 3182re(ckim) 3185re(ckim) 3186re(ckim) 3187re(ckim) 3192re(ckim) 3195re(ckim) 3199re(ckim) 3200re(ckim) 3210re(ckim) 3211re(ckim) 3221re(ckim) 3222re(ckim) 3286re(ckim) 3287re(ckim) 3288re(ckim) 3296re(ckim) 3309re(ckim) 3313re(ckim) 3393re(ckim) 3432re(ckim) 3588rce(ckim) 3591re(ckim) 5237rce(ckim) 12764rce(ckim) 48534re(ckim) 48541rce(ckim) 48546re(ckim) 48645re(ckim) 48654re(ckim)

1 + 0

mount

Score:0

Ubuntu

Rinzwind

7/26/24, 10:41 AM

They are processes. The manpage on fuser explains the ce and cre:

c      current directory.
e      executable being run.
f      open file. f is omitted in default display mode.
F      open file for writing. F is omitted  in  default  display
       mode.
r      root directory.
m      mmap'ed file or shared library.

so the e states "executable being run"

I closed all the apps and opened only one terminal.

That still leaves all the systemd services. If you want to find the source: use ps -ef | grep {pid} I expect those all to end up to the same type of event: a systemd service.

How can I make those disappear??

It is likely mounted from /etc/fstab and after you edit that the obvious thing to do is a reboot. That will kill all connections to the mount so there should be no need.

+ 3

Chan Kim

7/26/24, 11:46 AM

OK, I read from the ref link that I have to check before the umount command. Is it ok to edit fstab and just reboot? (the link showed umount and mount without rebooting..). I'll try it tomorrow. thanks!

Rinzwind

7/26/24, 12:58 PM

Yes. If nothing else needs to change that is fine.

Chan Kim

7/27/24, 8:45 AM

Just a minuite ago, I edited the fstab file, (and made new mount point ealier), and dit umount /old, and mount /new, and it just worked. I should have checked the 'fuser' command (to see if it worked with all the user processes) but I didn't check. Thank you.

Elon Musk

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EN: "fuser -cu /mount_point" result shows many processes?

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