Arch Linux

afader

Member

Registered: 2013-09-12

Posts: 205

[SOLVED] why dm_mod and loop load so many times if I do not have raid?

all my drives are normal partitions no lvm, why does dm_mod and loop load like 6 times during boot?

edit;
I solved it. by either doing sudo systemctl mask systemd-repart.service or it may have been caused by something to do with flatpak which I do not really use so I uninstalled it.

Last edited by afader (2025-07-29 22:12:16)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,138

Re: [SOLVED] why dm_mod and loop load so many times if I do not have raid?

DM isn't just for RAID and will also be in effect in any kind of LUKS/LVM setup. So if your drive is encrypted that might explain why.

Generally speaking https://bbs.archlinux.org/viewtopic.php?id=57855 -- post the actual log you're seeing of your system so that people have a chance to properly give advice.

That said I faintly do remember some lvm daemon being implicitly active by default to react to potential lvm adjustments on demand, which is likely what you're seeing

Last edited by V1del (2025-07-27 08:13:31)

afader

Member

Registered: 2013-09-12

Posts: 205

Re: [SOLVED] why dm_mod and loop load so many times if I do not have raid?

Have no lvm, luks, or raid...

 ✘ akf@obsidian  /home/andrew  sudo dmesg | grep dm_mod
[   17.360946] systemd[1]: Starting Load Kernel Module dm_mod...
[   17.375491] systemd[1]: modprobe@dm_mod.service: Deactivated successfully.
[   17.375593] systemd[1]: Finished Load Kernel Module dm_mod.
[   18.099679] systemd[1]: Starting Load Kernel Module dm_mod...
[   18.117955] systemd[1]: modprobe@dm_mod.service: Deactivated successfully.
[   18.118129] systemd[1]: Finished Load Kernel Module dm_mod.
[   18.208500] systemd[1]: Starting Load Kernel Module dm_mod...
[   18.241073] systemd[1]: modprobe@dm_mod.service: Deactivated successfully.
[   18.258507] systemd[1]: Finished Load Kernel Module dm_mod.
[   18.304197] systemd[1]: Starting Load Kernel Module dm_mod...
[   18.345999] systemd[1]: modprobe@dm_mod.service: Deactivated successfully.
[   18.346175] systemd[1]: Finished Load Kernel Module dm_mod.
[   18.503677] systemd[1]: Starting Load Kernel Module dm_mod...
[   18.521714] systemd[1]: modprobe@dm_mod.service: Deactivated successfully.
[   18.521883] systemd[1]: Finished Load Kernel Module dm_mod.
[   18.574722] systemd[1]: Starting Load Kernel Module dm_mod...
[   18.598579] systemd[1]: modprobe@dm_mod.service: Deactivated successfully.
[   18.598740] systemd[1]: Finished Load Kernel Module dm_mod.
 akf@obsidian  /home/andrew  sudo dmesg | grep loop  
[    2.235565] Calibrating delay loop (skipped), value calculated using timer frequency.. 7200.00 BogoMIPS (lpj=3600000)
[   17.363610] systemd[1]: Starting Load Kernel Module loop...
[   17.370539] loop: module loaded
[   17.377261] systemd[1]: modprobe@loop.service: Deactivated successfully.
[   17.377359] systemd[1]: Finished Load Kernel Module loop.
[   18.103615] systemd[1]: Starting Load Kernel Module loop...
[   18.119011] systemd[1]: modprobe@loop.service: Deactivated successfully.
[   18.119163] systemd[1]: Finished Load Kernel Module loop.
[   18.229811] systemd[1]: Starting Load Kernel Module loop...
[   18.273312] systemd[1]: modprobe@loop.service: Deactivated successfully.
[   18.273500] systemd[1]: Finished Load Kernel Module loop.
[   18.328146] systemd[1]: Starting Load Kernel Module loop...
[   18.360136] systemd[1]: modprobe@loop.service: Deactivated successfully.
[   18.361995] systemd[1]: Finished Load Kernel Module loop.
[   18.506931] systemd[1]: Starting Load Kernel Module loop...
[   18.523791] systemd[1]: modprobe@loop.service: Deactivated successfully.
[   18.523955] systemd[1]: Finished Load Kernel Module loop.
[   18.577751] systemd[1]: Starting Load Kernel Module loop...
[   18.603320] systemd[1]: modprobe@loop.service: Deactivated successfully.
[   18.603562] systemd[1]: Finished Load Kernel Module loop.

solved. thanks

 ✘ akf@obsidian  /home/andrew  sudo dmesg | grep dm_mod
 ✘ akf@obsidian  /home/andrew  sudo dmesg | grep loop               
[    2.235539] Calibrating delay loop (skipped), value calculated using timer frequency.. 7200.00 BogoMIPS (lpj=3600000)
 akf@obsidian  /home/andrew  

Last edited by afader (2025-07-29 22:12:40)