Re: [fuse-devel] fuse_hidden files

[Stef B. <st...@gm...>]

Hi,

.fuse_hidden files??? HUh? Where are those used? Frankly, I've never
heard from them.
In what fs these are used?

Stef

2011/4/20 Daniel Iwan GM <iwa...@go...>:
> Hi all
>
> What is the strategy and correct behaviour for listing directory with
> .fuse_hidden files (results of unlink operation on opened file)
> Should filesystem implementation include .fuse_hidden files as the result of
> getdir?
>
> What to do on getattr(.fuse_hidden) ? Return ENOENT?
> I guess getattr is a result of returning hidden file in getdir in the first
> place, so that getattr would disappear if
> hidden file was not returned as a result of getdir
>
> I assume getattr for original file name should return ENOENT
>
> I thought FUSE automatically filters out fuse_hidden files but it looks like
> it does not.
> Is there an option to do that? I think there is one but implemented in
> unionfs.
>
> If the fuse_hidden were not returned (implementation filters them out) then
> client app would assume
> directory is empty (file has been deleted) and for example volume can be
> safely unmounted.
> This may fail of course as file may not be deleted yet .
>
> All those questions are a result of observations some sort of race condition
> where
> file is being opened, read and then tried to be deleted.
> Delete succeeded (which is correct I believe) and the file can still be read
> (which is also correct I think).
> My test checks if file has been deleted, closes read stream and unmounts the
> volume
> I have suspicion that there is a race condition between unmount and
> flush/release calls which causes
> all sorts of problems (next tests fail etc.)
>
> ANy thoughts appreciated.
>
>
> D.
> ------------------------------------------------------------------------------
> Benefiting from Server Virtualization: Beyond Initial Workload
> Consolidation -- Increasing the use of server virtualization is a top
> priority.Virtualization can reduce costs, simplify management, and improve
> application availability and disaster protection. Learn more about boosting
> the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev
> _______________________________________________
> fuse-devel mailing list
> fus...@li...
> https://lists.sourceforge.net/lists/listinfo/fuse-devel
>