It looks as though those are there for architectures where someone has
implemented spinlocks in assembler code.  There are also generic routines
written in C for everyone else.  While it would be a bit of a performance
enhancement to have one for Linux/390, it doesn't appear to be a
requirement.

You might want to re-build Samba specifying -DDEBUG to turn on debugging, at
least in the TDB code.  It looks like they've got a number of messages that
might get generated and tell you something more than you have right now.


Mark Post

-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of
Daniel Jarboe
Sent: Thursday, December 18, 2003 7:15 AM
To: [EMAIL PROTECTED]
Subject: Samba and tdb locking on s/390


I've been seeing a lot of tdb problems during our SuSE trial when it
comes to Samba.  Over time a tdb or two inevitably becomes corrupt,
sometimes in just an hour or two.  I ran tdbtorture, a tool that comes
with the samba source, and got errors left and right.  On intel, the
tdbtorture suite just runs for a while and prints OK.  Well, on s/390
immediately there are a plethora of messages like:

tdb_brlock failed (fd=3) at offset 11752 rw_type=1 lck_type=13: Resource
temporarily unavailable
tdb_brlock failed (fd=3) at offset 11752 rw_type=1 lck_type=13: Resource
temporarily unavailable
tdb_brlock failed (fd=3) at offset 11752 rw_type=1 lck_type=13: Resource
temporarily unavailable
tdb_brlock failed (fd=3) at offset 11752 rw_type=1 lck_type=13: Resource
temporarily unavailable
tdb_brlock failed (fd=3) at offset 11752 rw_type=1 lck_type=13: Resource
temporarily unavailable
tdb_brlock failed (fd=3) at offset 11752 rw_type=1 lck_type=13: Resource
temporarily unavailable
tdb_brlock failed (fd=3) at offset 11752 rw_type=1 lck_type=13: Resource
temporarily unavailable

I looked in tdb/spinlock.c and saw a bunch of architecture-specific
#ifdefs, but nothing S/390ish.  Should there be one?

~ Daniel







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