[Cluster-devel] [GFS2 PATCH v2 14/15] GFS2: Hold onto iopen glock longer when dinode creation fails

[Andrew W Elble]

> Hi Andy,
>
> Thanks. I'll investigate it.
>
> BTW, I haven't found any more blatant bugs during testing, however I'm
> debugging another issue. It seems as if I still have a reference counter
> issue somewhere because if I slam GFS2 hard enough, I can get it to
> accumulate millions of glocks that are never freed (unless memory pressure
> causes the glock shrinker to be called). Having the extra glocks is causing
> undue strain on the dlm, to the point where dlm can't keep up.
> So it seems likely that I'll do another revision here anyway.
> I'll keep you posted.

Bob,

  Would that resemble something like this?

S    glocks  nondisk    inode    rgrp   iopen   flock quota j;rnl    Total
S  --------- ------- -------- ------- ------- ------- ----- ---- --------
S  Unlocked:       1    67677     304       0       0   460    0    68442
S    Locked:       2  1638575     630 1637848       0   780    1  3277836
S     Total:       3  1706252     934 1637848       0  1240    1  3346278
S
S   Held EX:       0        1       0       0       0     0    1        2
S   Held SH:       1        1       0 1637847       0     0    0  1637849
S   Held DF:       0        0       0       0       0     0    0        0
S G Waiting:       0        0       0       0       0     0    0        0
S P Waiting:       0        0       0       0       0     0    0        0
S  DLM wait:       0

Thanks,

Andy

-- 
Andrew W. Elble
aweits at discipline.rit.edu
Infrastructure Engineer, Communications Technical Lead
Rochester Institute of Technology
PGP: BFAD 8461 4CCF DC95 DA2C B0EB 965B 082E 863E C912