On Mon, Jun 28, 2021 at 10:16 AM Joe Wong <joewong99@gmail.com> wrote:

On Mon, Jun 28, 2021 at 10:10 AM Benny Pedersen <me@junc.eu> wrote:
On 2021-06-28 03:19, Joe Wong wrote:

> What did I miss here ?

https://askubuntu.com/questions/197459/how-to-fix-sudo-unable-to-open-read-only-file-system

for ubuntu here, i just think its same problem on centos

Thanks Benny but there is no file systems error can be found at all in my Centos7 box.

I delete /usr/var/run/dovecot, I can mkdir myself without error..

[root@new-ns1 run]# tail /var/log//messages
Jun 28 09:53:41 new-ns1 systemd: Started dnf makecache.
Jun 28 09:54:10 new-ns1 systemd: Started Dovecot IMAP/POP3 email server.
Jun 28 09:54:10 new-ns1 dovecot: Fatal: mkdir(/usr/var/run/dovecot) failed: Read-only file system
Jun 28 09:54:10 new-ns1 systemd: dovecot.service: main process exited, code=exited, status=89/n/a
Jun 28 09:54:10 new-ns1 systemd: Unit dovecot.service entered failed state.
Jun 28 09:54:10 new-ns1 systemd: dovecot.service failed.
[root@new-ns1 run]# mkdir dovecot
[root@new-ns1 run]# ls -l
total 4
drwxr-xr-x 2 root root 4096 Jun 28 09:54 dovecot

Moreover, if I launch dovecot manually

/usr/sbin/dovecot -c /usr/local/etc/dovecot/dovecot.conf

It does not complain of any error and I can login my mailbox via IMAP without any problem at all. I am running out of idea what could be the problem here. Something to do with user's privileges when running under systemd?