umounting notification

[Malo Skrylevo]

How to know when unmount procedure is completed on unmount operation? Since umount folder returns immediately.

[Alexander Galanin]

Unfortunately, synchronized umount is now supported by FUSE only with privileged 'blkdev' option. You have two possibilites:

1. Mount by root with blkdev option.
2. Wait until file system process is finished. Use -f flag to disable fork-ing of a file system process from caller.

[Malo Skrylevo]

@agalanin

Wait until file system process is finished

do you mean?

`umount -f`

[Malo Skrylevo]

I saw fusermount have 2 umount option -z, -u:

fusermount: [options] mountpoint
 Options:
  -u            unmount
  -z            lazy unmount

so weither possible to umount wit non-lazy mode ensuring that zip archive is updated to that time?

[Alexander Galanin]

so weither possible to umount wit non-lazy mode ensuring that zip archive is updated to that time?

No. FUSE does not allow non-privileged userspace processes to block unmount process. See http://fuse-devel.narkive.com/vm692Zv0/blocking-umount and https://github.com/libfuse/libfuse/issues/1

[Alexander Galanin]

How to wait until file system process is really finished:

1. Mount archive with -f option to never fork the process:

fuse-zip -f archive.zip mountpoint &
pid=$!

1. do anything with mounted file system
2. unmount the file system:

fusermount -u mountpoint

1. wait until process is finished:

wait $pid

[Alexander Galanin]

See also issue #7