20.11.2025 20:04, Andrei Borzenkov wrote:
20.11.2025 18:26, Bhasker C V wrote:
Hi all,
I run my rootfs in 'ro' state and occasionally when i have to do an
install I switch to remount,rw ... do stuff and then go back to remount,ro
However, remount,ro many a times fails since someone has opened the rootfs
in "rw" state
While investigating I found that there seems to be this output in the LSOF
command
systemd 1 root 9u REG 252,1 141808 659970
/usr/lib/systemd/systemd-executor
systemd 1668 bcv 9u REG 252,1 141808 659970
/usr/lib/systemd/systemd-executor
is there a reason why systemd has opened /usr/lib/systemd/systemd-executor
in "rw" (9u) state rather than "r" ?
systemd-executor is opened with O_PATH which lsof does not understand,
so I'd say it is lsof display bug.
bor@bor-Latitude-E5450:~$ sudo cat /proc/1/fdinfo/9
pos: 0
flags: 012000000
mnt_id: 33
ino: 20466488
bor@bor-Latitude-E5450:~$
OR is there a method to tell systemd not to open the files in / ever in
"rw" mode permanently (momentarily is fine) ?
Do you have any evidence it is systemd?
