[ion@ion-desk ~]$ sudo pacman -Syu
[sudo] password for ion:
:: Synchronising package databases...
error: failed to synchronize all databases (unable to lock database)
[ion@ion-desk ~]$
Any suggestion?
Wait a few minutes and try again. Sometimes an updated or some other application will have the DB locked.
If it persists, and you are sure there are no other updates or pacman processes running, you can delete the file /var/lib/pacman/db.lck
Did you update the mirrors before?
Edit: and or what dalto said 
1 Like
Do you have file /etc/pacman.d/endeavouros-mirrorlist?
If not, run commands
sudo touch /etc/pacman.d/endeavouros-mirrorlist
eos-rankmirrors
I did that and the error changes to…
[ion@ion-desk ~]$ sudo pacman -Syu
:: Synchronising package databases...
endeavouros is up to date
core is up to date
extra.db failed to download
multilib is up to date
chaotic-aur is up to date
error: failed retrieving file 'extra.db' from mirror.arizona.edu : Failure writing output to destination, passed 1368 returned 1001
error: failed retrieving file 'extra.db' from mirror.arizona.edu : Failure writing output to destination, passed 16375 returned 269
error: failed to synchronize all databases (failed to retrieve some files)
[ion@ion-desk ~]$
How might I change my mirror? Thanks in advance.
Are you sure the disk space is not running out?
Check with e.g.
/bin/df -hT
You can update the arch mirrors from the Welcome app.
Good question!
[ion@ion-desk ~]$ /bin/df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/sda2 ext4 108G 103G 0 100% /
devtmpfs devtmpfs 4.0M 0 4.0M 0% /dev
tmpfs tmpfs 2.9G 0 2.9G 0% /dev/shm
efivarfs efivarfs 128K 26K 98K 21% /sys/firmware/efi/efivars
tmpfs tmpfs 1.2G 1.5M 1.2G 1% /run
tmpfs tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-journald.service
tmpfs tmpfs 2.9G 16K 2.9G 1% /tmp
/dev/sda1 vfat 2.0G 186M 1.9G 10% /efi
/dev/sdb1 ext4 916G 98G 772G 12% /home/ion/DATA
tmpfs tmpfs 585M 124K 585M 1% /run/user/1000
[ion@ion-desk ~]$
How do I locate the problem file that's causing it?
Looks like this could be a problem.
Edit: How could it be full?
You can probably get some breathing room by cleaning up your pacman cache:
sudo paccache -ruk 3
Thanks for the help, but I caused the problem with a backup that somehow created many large /mnt files. Sorry to bother all of you.
1 Like