Re: [fuse-devel] Problem with 13th open/release

[Ulrik M. <ulr...@gm...>]

Kept googling and found a description of the problem here:
http://thread.gmane.org/gmane.comp.file-systems.fuse.devel/4451

I had already tried fuse_reply_none, but reply_err(,0) wasn't really intuitive.

This would be VERY useful information to put here:
http://fuse.sourceforge.net/doxygen/structfuse__lowlevel__ops.html#bc49c6310cd0eaddf116988426ca21d2

Regards
/ Ulrik

2010/9/5 Ulrik Mikaelsson <ulr...@gm...>:
> Hi,
>
> I'm writing a filesystem for the lowlevel fuse interface, and have
> encountered problems I'm having a hard time making sense of.
> Basically, it's a read-only filesystem, implementing only lookup,
> release, stat, open and read.
>
> Everything mostly works fine, except for a very strange and
> frustrating bug; the 13th open/release request hangs indefinitely.
> That is, I'm select()ing on the fuse_chan_fd of the channel, and for
> the 13th open(), select() on the fuse-fd in the filesystem doesn't
> return. It doesn't matter what files/inodes I'm opening. Opening and
> closing the same file 13 times works just as bad as 13 different
> files. Just opening the same file over and over again works, but when
> releasing it, the filesystem freezes again.
>
> Only stat:ing works with hundreds of files, so it somehow must have
> something to do with my implementation of open/release, but I can't
> figure what. Especially, I can't figure why exactly the 13th is always
> the one to fail. Just a bad number I guess.
>
> Does anyone have any good hints or pointers?
>
> Regards
> / Ulrik
>