TagFuse: when starting up, lots of non-existent getattr requests performed by some unknown source

[danome]

When TagFuse starts up some higher level system code is calling getattr on several directories that don't exist. This slows down the system considerably.

Below is the output from tagfuse startup.

DEBUG:fuse.log-mixin:-> getattr /BDMV (None,)
** getattr: path /BDMV
*** dirhandler.traverse fail
** getattr: pathlist: None
DEBUG:fuse.log-mixin:<- getattr '[Errno 2] No such file or directory'
DEBUG:fuse.log-mixin:-> opendir / ()
DEBUG:fuse.log-mixin:<- opendir 0
DEBUG:fuse.log-mixin:-> getattr /.xdg-volume-info (None,)
** getattr: path /.xdg-volume-info
*** dirhandler.traverse fail
** getattr: pathlist: None
DEBUG:fuse.log-mixin:<- getattr '[Errno 2] No such file or directory'
DEBUG:fuse.log-mixin:-> getattr / (None,)
** getattr: path /
** getattr: pathlist: ['']
*** dirhandler.getattr ['']
DEBUG:fuse.log-mixin:<- getattr FileHandler([('st_ctime', 1523859363.713652), ('st_mtime', 1523859363.713653), ('st_nlink', 4), ('st_gid', 1000), ('st_blksize', 512), ('st_size', 0), ('st_atime', 1523859363.713654), ('st_uid', 1000), ('st_mode', 16873)])
DEBUG:fuse.log-mixin:-> getattr /autorun.inf (None,)
** getattr: path /autorun.inf
*** dirhandler.traverse fail
** getattr: pathlist: None
DEBUG:fuse.log-mixin:<- getattr '[Errno 2] No such file or directory'
DEBUG:fuse.log-mixin:-> getattr /.Trash (None,)
** getattr: path /.Trash
*** dirhandler.traverse fail
** getattr: pathlist: None
DEBUG:fuse.log-mixin:<- getattr '[Errno 2] No such file or directory'
DEBUG:fuse.log-mixin:-> readdir / (0L,)
*** NetDirHandler.readdir [bytearray(b'\xa0\xb6\x96\xb4\xfb)')]
*** NetDirHandler.readdir Set(['a0b696b4fb29']) Set(['ffffffffffff']) Set(['a0b696b4fb29'])
sparse handler init: /home/pi/tag_store
*** NetDirHandler.readdir ['.', '..', '.test', 'ffffffffffff', 'a0b696b4fb29']
DEBUG:fuse.log-mixin:<- readdir ['.', '..', '.test', 'ffffffffffff', 'a0b696b4fb29']
DEBUG:fuse.log-mixin:-> getattr /.Trash-1000 (None,)
** getattr: path /.Trash-1000
*** dirhandler.traverse fail
** getattr: pathlist: None
DEBUG:fuse.log-mixin:<- getattr '[Errno 2] No such file or directory'