One thing you should know is that although MacFUSE is multithreaded (and many operations can be in flight, each running in its own thread), it is *currently not reentrant* for any given file system object. That is, for a single given file, operations are serialized by the kernel. For different files, operations can run in parallel. So, if you block in write(), say, for file "foo", then until that call finishes, subsequent operations on "foo" will have to wait. In particular, if you are in "foo"'s parent directory, an "ls -l" could block because it could cause a getattr() to be performed on "foo". (Just an "ls" would not block because it only does a readdir() on the parent.) And actually, "ls -l" would want to do listxattr()/getxattr() too.
I suspect this is what you are seeing. This is a limitation of the current implementation. The limitation can be removed by implementing a finer grained locking model in the MacFUSE kernel extension. Even allowing getattr(), listxattr(), and getxattr() to proceed for a file in the face of another blocked call should make it much nicer for your scenario. Hopefully I'll get around to implementing the aforementioned locking at some point. It's on my TODO list, but it's quite a bit of work. Amit On Aug 25, 6:49 pm, Daniel Benamy <[EMAIL PROTECTED]> wrote: > I've got a fuse file system which sometimes intentionally blocks > requests. It works with fuse on linux which spawns new threads for > each request and is happy to leave some hanging around for a while and > process other requests. But when I run it with macfuse, its acting as > though when one request blocks, the whole thing gets stuck. Is this > intentional? Is there any way around it? I did a bit of searching on > the web and skimmed the code and I haven't found anything about this. > Thanks a lot, > Dan --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "macfuse-devel" group. To post to this group, send email to macfuse-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/macfuse-devel?hl=en -~----------~----~----~----~------~----~------~--~---
