On 12/05/2016 12:27 PM, Török Edwin wrote:
The description here is a bit confusing, and scary: what if I run out of space and I need to rm the coredumps to make room?
If the coredumps are stored in the same file as the systemd journal I'd loose my system logs too, so it makes no sense to have them in the same file.

This is possibly compounded by the fact that /var/log/journal and /var/lib/systemd/coredump are usually on the root filesystem, which is also used by the updates, which may load up few gigabytes into /var/cache/dnf IIRC, and need significant extra space while updating.

This is mitigated by dnf actually doing free space requirement estimation, and by journalctl managing its log file size. I just had to do it on most recent F25 update: IIRC, I had ~5GB left free on a small root, DNF required 3GB extra, and the log files were about 5GB, so I did 'journalctl --vacuum-size 2G' which was almost instantaneous.