Re: [9fans] fuse bashing

[erik quanstrom <quanstro@quanstro.net>]

one could write a fileserver that allows you to give it a file
to watch and either send a plumbmsg back or write a Dir
structure back on the original fd when it changes.

i'm not sure one needs to modify the underlying filesystem.

actually making the notifier live outside the filesystem would
allow many "notifiers" running against the same fs. say 1 fs
10 notifiers and 100 clients per notifier. 

- erik

Ronald G Minnich <rminnich@lanl.gov> writes

| 
| Dave Eckhardt wrote:
| >>The big complaints I know of so far on 9P are [...]
| > 
| > 
| > If servers routinely dealt with thousands of clients and/or
| > clients with large persistent caches then some sort of
| > acceleration for cache validation might be nice--callbacks
| > (aka leases) or maybe something based on a log of
| > invalidations.
| > 
| > But given current usage patterns it's not clear there's
| > a need.
| 
| 
| except here and some other sites, where there is a burning need, and 
| current parallel file systems are not quite working (yet)
| 
| having enough thousand nodes all try to stat the same file, at the same 
| time, in a callback-based file system, can be trouble.
| 
| 
| ron