[OpenAFS] Open files dissapear?

[Harald Barth]

Thanks for all the data! Did a quick test on my laptop. I consider my
laptop to have "working AFS" ;-)

> Problem is repeatable.

Here too (with client 1.4.5 against server 1.4.7) so we
can eliminate "problem due to recent changes in OpenAFS".

$ ./src/blogbench -d /afs/...test/blogbench/

Frequency = 10 secs
Scratch dir = [/afs/...test/blogbench/]
Spawning 3 writers...
Spawning 1 rewriters...
Spawning 5 commenters...
Spawning 100 readers...
Benchmarking for 30 iterations.
The test will run during 5 minutes.

  Nb blogs   R articles    W articles    R pictures    W pictures    R comments    W comments
read(): No such file or directoryread(): No such file or directoryread(): No such file or directoryread(): No such file or directory

>From the blogbench webpage:

> Since some filesystems are unable to manage more than 32k or 64k
> links to the same directory (an example is UFS), you should not
> force the test to run a silly amount of time on these filesystems.

So is blogbench running into the directory size limit of AFS and
ignoring the error code or something like that? If I throttle down
blogbench a bit it does not bail out:


$ ./src/blogbench -c 2 -r 10 -w 2 -i 10 -d /afs/...test/blogbench/

Frequency = 10 secs
Scratch dir = [/afs/...test/blogbench/]
Spawning 2 writers...
Spawning 1 rewriters...
Spawning 2 commenters...
Spawning 10 readers...
Benchmarking for 10 iterations.
The test will run during 1 minutes.

  Nb blogs   R articles    W articles    R pictures    W pictures    R comments    W comments
        12        15764           672          8215           591          8715          1471
        23        36326           611         21185           606         19617          1372
        27        25634           302         14719           228         12865           670
        37        35388           625         20725           631         17091          1085
        41        11578           283          7091           170          6474           609
        46        11071           368          7273           403          5718           704
        47         1262            56           842            98          1284           106
        59        23557           805         14762           544         12034          1236
        60         3390            40          1813            83          1523           102
        66        11984           319          7592           475          5874           756

Final score for writes:            66
Final score for reads :          3574

I don't know enough of the inner works of blogbench to be able to say more.

Harald.