Re: Ceph-fuse : unmounted but ceph-fuse process not killed

[Florent B <florent@xxxxxxxxxxx>]

I use force and lazy because it's inside an automatic deployment script and sometimes files are opened on the mount point but I need to remount it in my script.
I will see if I can do this better. Thank you

Le 12 février 2018 21:08:21 GMT+01:00, David Turner <drakonstein@xxxxxxxxx> a écrit :

Why are you using force and lazy options to umount cephfs?  Those should only be done if there are problems unmounting the volume.  Lazy umount will indeed leave things running, but just quickly remove the FS from it's mount point.  You should rarely use umount -f and even more rarely use umount -l.  From the help for umount is the following excerpt.  Having orphaned processes after using a lazy umount is the purpose of the option.

-l --lazy

    Lazy unmount. Detach the filesystem from the filesystem hierarchy 

    now, and cleanup all references to the filesystem as soon as 

    it is not busy anymore. (Requires kernel 2.4.11 or later.)

On Mon, Feb 12, 2018 at 2:44 PM Florent B <florent@xxxxxxxxxxx> wrote:

Hi,

I use Ceph Luminous last version on Debian Jessie.

Sometimes, when I unmount my ceph-fuse FS using "umount -f -l
/mnt/point", unmounting is fine but "ceph-fuse" process continues running.

Is that expected ? How to fix this ?

Thank you.

Florent

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