Hi,

Currently all LHC tasks fail with

boinc[1379393] mv: cannot move 'slots/14/shared/output.tgz' to 'projects/lhcathome.cern.ch_lhcathome/Theory_2922-4841589-490_2_r787104244_result': Permission denied
boinc[436367]: 06-Feb-2026 01:13:40 [LHC@home] Can't rename output file slots/14/shared/output.tgz to projects/lhcathome.cern.ch_lhcathome/Theory_2922-4841589-490_2_r787104244_result: rename() failed 

these are docker tasks. chmodding the slots and projects dirs to a+w didn't help either.
My best guess is that for some reason all data in the slots dir is owned by root (my guess is that's the uid used in the docker image), so moving by the boinc (under which boinc-client runs) user will fail.
running boinc as root is a no-go.

Any ideas?

I suggest that all directories from /var/lib/boinc down (recursively) belong to OWNER:GROUP boinc:boinc, and your username is in the GROUP boinc.

$ chown -R boinc:boinc /var/lib/boinc

Check that your username is in the GROUP boinc.

$ getent group boinc

If not, add youself.

$ usermod -a -G boinc yourusername