Ubuntu: No space left on device

Question

I've discovered in syslog that postfix is reporting

postfix/cleanup[31051]: warning: mail_queue_enter: create file incoming/407669.31051: No space left on device

I also have problems with boinc suddenly stopping, apparently because it loses its connection to localhost. I don't know if this is connected.

df reports that all disks have plenty of space (root is only 40% used), no swap is being used, the waste bin is empty, and disks appear to be healthy. Any suggestions as to what might be causing this?

I'm using 14.10, with 3.16.0-25-generic.

Comments

What is your output for df -i ?

---

I've since rebooted as other apps became problematic. Currently, the IUse% on root is 14%. Most are about 1% - 5%

Answer 1

Any other syslog messages stand out? Googling around points to a possible reservation of space for root issue.

http://serverfault.com/a/93613

 tune2fs -l /dev/sda1
 The entry to look at is Reserved block count and multiply it by Block size to get bytes reserved

Other posts on the http://serverfault.com/questions/93606 page reference 'message_size_limit' so that might be worth checking. I'm guessing that it's probably not going to be your problem though.

I didn't think to ask earlier for the output from df -h. What does the space on other volumes (such as where /tmp is mounted) look like?