Public bug reported:
The default systemctl fstrim.timer on Ubuntu 18.04 entirely freeze the
computer once a week (usually on Monday midnight) in the case of a dual
boot system installed on a SSD (Windows/Ubuntu) due to high IO overhead.
I also had several freeze at boot due to the same problem.
When the freeze occur I can open a tty terminal and type the command
iotop to see the process which use that amount of IO. It was mount.ntfs-
3g which point to my mount point to my Windows 10 install on my SSD.
When the freeze occur the system is not responsive for about 10-15
minutes.
I solved my issue by disabling the fstrim.timer entirely with this
command:
sudo systemctl disable fstrim.timer
I can reproduce the problem on my installation by launching the fstrim-
timer:
sudo systemctl start fstrim.timer
Imediately after launching fstrim.timer, iotop display this line at top,
with my Windows 10 mount point:
TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND
893 be/4 root 0.00 B/s 0.00 B/s 0.00 % 99.10 % mount.ntfs-3g
/dev/sda1 /media/systeme_windows -o
rw,noatime,noexec,nosuid,nodev,gid=100,uid=1000,nls=utf8,windows_names,umask=002,user
----
Systemd 237-3ubuntu10.19
Ubuntu 18.04.2
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1823721
Title:
systemctl fstrim.timer freeze computer with an SSD with dual boot
system Windows 10/Ubuntu 18.04
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