Thank you very much for you suggestions! I ran `filefrag` on /var/log/journal/ and the most fragmented files were: /var/log/journal/[...]/faa9e41c6.journal: 11136 extents found /var/log/journal/[...]/e9f8e1346c.journal: 633 extents found /var/log/journal/[...]/59ec50b631.journal: 3585 extents found /var/log/journal/[...]/59ec51d1b4.journal: 710 extents found /var/log/journal/[...]/f74afadee9.journal: 484 extents found
Then I ran `btrfs fi defrag -v -f -clzo *` in the aforementioned directory three times and restarted the machine. Now, the `journalctl -b --no-pager` command runs in less than two seconds. I tried to further optimize my file system (MySQL big storage files are highly affected), but somewhere (for me it looks like, on random places) there are kernel errors, so I suspended the further defragmentation until those errors are tracked down. Thank you very much again. Ákos -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
