[libvirt] [PATCH v7 2/6] add fuse support for libvirt lxc

Gao feng gaofeng at cn.fujitsu.com
Tue Nov 6 11:50:33 UTC 2012


于 2012年11月06日 17:11, Richard W.M. Jones 写道:
> On Tue, Nov 06, 2012 at 04:54:59PM +0800, Gao feng wrote:
>> Because libvirt_lxc create a thread to mount fuse filesystem.
>> and then libvirt_lxc will try to access the fuse filesystem.
>>
>> Without waiting,libvirt_lxc may access fuse before it is mounted.
>>
>> And I can't find a better way to make accessing fuse after the fuse
>> being mounted,because fuse_main will return until fuse being unmounted,so
>> I don't know how to pass message to tell libvirt_lxc whether the fuse is
>> mounted success.
> 
> Oh I see.  This is solvable, but I believe that you cannot use
> fuse_main.  You have to look at the fuse sources (quite complex!)  and
> do the individual fuse operations.
> 
> Have a look at how libguestfs does it ...
> 
>   https://github.com/libguestfs/libguestfs/blob/master/src/fuse.c#L911
>   http://libguestfs.org/guestfs.3.html#mount-local
> 


Thanks for the information.

Can fuse_mount & fuse_new & fuse_loop avoid the waiting?

It seems has the same problem.

Thanks
Gao




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