All over sudden dovecot thinks FS is read only

[Tobi]

Hello list

I saw the response from Vlad in my queue (as dovecot was broken there
has been no delivery to mailbox) but after fix and queue flush Vlads
message does not show up in my mailbox.

> Check the systemd unit for ProtectHome, and make sure that is turned
> off.

Found these lines in unit file

> # Enable this if your systemd is new enough to support it:
> ProtectSystem=full

and after commenting the 2nd one, dovceot could write again to the FS :-)
Have no idea why this setting started to make problems just today :-)

Thanks so much for the fast help here

tobi

Am 28.10.2017 um 11:51 schrieb Tobi:
> Hi list
> 
> I have to dovecot instances running which host my mailboxes on Centos7
> 
> dovecot.x86_64                      1:2.2.26.0-2.el7.centos
> installed
> dovecot-debuginfo.x86_64            1:2.2.26.0-2.el7.centos
> installed
> dovecot-mysql.x86_64                1:2.2.26.0-2.el7.centos
> installed
> dovecot-pigeonhole.x86_64           1:2.2.26.0-2.el7.centos
> installed
> 
> all over sudden both dovecot "think" that the mailbox filesystem is read
> only and fill the logs with
> 
> Oct 28 11:39:50 mbox1 dovecot: lmtp(tobster at brain-force.ch): Error:
> ssY/MGZQ9FnoLgAAC4IaJw:2: sieve: failed to open logfile (LOGGING TO
> STDERR): open(/home/vmail/brain-force.ch/tobster/.dovecot.sieve.log)
> failed: Read-only file system
> 
> But a test at cli shows that I can write to the location
> 
> $ echo "test" >/home/vmail/brain-force.ch/tobster/.dovecot.test
> $ cat /home/vmail/brain-force.ch/tobster/.dovecot.test
> test
> $ echo "test1" >/home/vmail/brain-force.ch/tobster/.dovecot.test
> $ cat /home/vmail/brain-force.ch/tobster/.dovecot.test
> test1
> 
> Mounts show that the FS should be rw
> /dev/vda2 / ext4 rw,relatime,data=ordered 0 0
> 
> I restarted dovecot several time already. As well I restarted the
> physical host on which the dovecot vms reside.
> 
> Filesystems are not full and are not running out of inodes.
> 
> Does anyone have an idea why dovecot suddenly behaves like that?
> 
> Thanks a lot for any hint
> Regards
> 
> tobi
>