System documentation of Samba
jeff.mandel at probes.com
Thu Sep 5 17:43:01 GMT 2002
David Collier-Brown wrote:
>Jeff Mandel wrote:
>>Could you provide some details the bug in Solaris? 2.2.2 used to work
>>fine for me, but recently it has fallen apart. 2.2.5 behaves the same. I
>>can think of a recent jumbo patch cluster installation that might be to
>>blame, but I'd like to know if it's possible to track it down a back it
>>out for now.
> Sure: it's a performance problem with locks
> which shows up when locking the index file of
> a dbm-style database (which have two files, an
> index and a data file), and which is being shared
> via Samba with PC clients. At least one site,
> and probably two, have the problem. I'm following
> it with considerable interest (I work for Sun, you
> see, although not on Samba (:-))
> It doesn't affect the performance of Samba on
> Solaris in general, and oddly enough it doesn't
> seem to hit MS Access...
>>> open_mode_check: exlusive oplock left by process 23227 after
>>>break For file profile/.../office.file.doc,
> It's not related to the problem you see, with ordinary
> oplocked .doc files. One wouldn't oplock dbm files!
It sounds like there are two scenarios here:
1) Locking performance problems on dbm-style databases shared with PCs.
(We're not using any of those)
2) Race conditions caused by ??? (We have problem with this big time -
and the one I'm more concerned about)
Is the solaris bug that causes CPU race that Jeremy was referring to one
of locking on samba's own db files in var/locks?
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