trapexit
2b500f194a
Also have special error handling for when branches are invalid and ENOENT would be returned for getattr and readdir so users understand what is going on and the runtime interface can still be used to fix the problem.
1.3 KiB
Upgrade
mergerfs can be upgraded live by mounting on top of the previous instance. Simply install the new version of mergerfs and follow the instructions below.
Run mergerfs again or if using /etc/fstab (or systemd mount file)
call for it to mount again. Existing open files and directories will
continue to work fine though they won't see any differences that the
new version would provide since it is still using the previous
instance. If you plan on changing settings with the new mount you
should / could apply those before mounting the new version.
$ sudo mount /mnt/mergerfs
$ mount | grep mergerfs
media on /mnt/mergerfs type mergerfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other)
media on /mnt/mergerfs type mergerfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other)
A problem with this approach is that the underlying instance will
continue to run even if the software using it stop or are
restarted. To work around this you can use a "lazy umount". Before
mounting over top the mount point with the new instance of mergerfs
issue: umount -l <mergerfs_mountpoint>. Or you can let mergerfs do
it by setting the option lazy-umount-mountpoint=true.
If the intent is to change settings at runtime then the runtime interface should be used.