I noticed these error messages in the systemd logs on all our AWS servers running Ubuntu (on both 16.04 and 18.04):
dev-xvdb.device: Job dev-xvdb.device/start timed out.
Timed out waiting for device dev-xvdb.device.
Dependency failed for /mnt.
mnt.mount: Job mnt.mount/start failed with result 'dependency'.
Dependency failed for File System Check on /dev/xvdb.
[email protected]: Job [email protected]/start failed with result 'dependency'.
dev-xvdb.device: Job dev-xvdb.device/start failed with result 'timeout'.
The functionality of the servers is not affected as far as I can see. The messages are always the same, start appearing at startup and repeat every few hours, although there is no clear pattern:
Jul 24 20:13:50
Jul 25 00:05:19
Jul 25 06:09:19
Jul 25 12:32:19
Jul 25 13:13:08
Jul 25 19:19:49
Jul 26 01:31:09
Jul 26 06:11:02
Jul 26 10:09:19
Jul 26 14:05:19
Jul 26 19:09:19
...
The messages also appear on idle servers, so I do not think it is related to the current workload.
Question:
- Do you know what the error message is about?
- Can it be fixed, or is it safe to ignore it?
Additional system information:
$ cat /etc/fstab
LABEL=cloudimg-rootfs / ext4 defaults,discard 0 0
/dev/xvdb /mnt auto defaults,nofail,x-systemd.requires=cloud-init.service,comment=cloudconfig 0 2
0 Answers