Created attachment 183423 [details] LO strace I'm unable to start any LO components if /home directory (most likely some relevant to LO parts of it) is located on mergerFS. yaro@yaro-desktop2:~$ mergerfs.ctl info - mount: /home version: 2.33.5 pid: 630 srcmounts: - /mnt/md0 - /mnt/md1 yaro@yaro-desktop2:~$ yaro@yaro-desktop2:~$ findmnt /home TARGET SOURCE FSTYPE OPTIONS /home mergerfs fuse.mergerfs rw,relatime,user_id=0,group_id=0,default_permissions,allow_other yaro@yaro-desktop2:~$ ------------ LO execution example (no output, nor error at all): yaro@yaro-desktop2:~$ C_ALL=C libreoffice --version yaro@yaro-desktop2:~$ And now if I "redirect" $HOME to the drive where .config (and most of the other /home content) is located: yaro@yaro-desktop2:~$ LC_ALL=C HOME="/mnt/md1/yaro" libreoffice --version LibreOffice 6.4.7.2 40(Build:2) yaro@yaro-desktop2:~$ It works fine. Writer, calc etc can be started without any problems. For some reasons, LO doesn't like mergerFS and just exit without any message or error. I also checked strace but it did not provide me any extra information. But I'm not good at it. :) Output provided in attachment. I observe the same behavior on ubuntu 22.04, neon 20.04 and some relatively new fedora. So it's not distro related. I also reported bug on mergerFS github at: https://github.com/trapexit/mergerfs/issues/1086
May be related to mmap() calls that seems to conflict with your mergeFS cache.files=off setting you mentioned there. Use cache.files=partial,dropcacheonclose=true instead, see https://github.com/trapexit/mergerfs#you-need-mmap-used-by-rtorrent-and-many-sqlite3-base-software Unfortunately your strace at https://gist.github.com/SirYaro/4f80d2e880fb72cb31fabc9bdb76bf50 was executed without the -f or --follow-forks option so what's actually happening can't be seen.
Please find new strace output in here: https://gist.github.com/SirYaro/91032fba97c3d9aadd6fbcf28f4709c1 (LC_ALL=C strace -f -o /tmp/LO-strace2.txt libreoffice --version)
Hi Eike Enabling cache helped indeed. But bth I'm not the biggest fan of this feature, and I'm wondering if it is possible to do something on Libreoffice side....
msg from mergerfs developer: trapexit Then it is probably that they are using mmap and they aren't using fallbacks. If so there is nothing I can do.