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At more than one large site I've seen significant problems due to
gencache_stabilize. gencache_stabilize was mainly introduced to
survive machine crashes with the cache still being in place. Given
that most installations crash rarely and this is still a cache, this
safety is overkill and causes real problems.
With the recent changes to tdb, we should be safe enough to run on
completely corrupted databases and properly detect errors. A further
commit will introduce code that wipes the gencache.tdb if such a
corruption is detected.
There is one kind of corruption that we don't properly handle:
Orphaned space in the database. I don't have a good idea yet how to
handle this in a graceful and efficient way during normal operations,
but maybe this idea pops up at some point.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
It's a pain to recompile the world if gencache.h changes
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Fri Oct 19 18:52:50 CEST 2018 on sn-devel-144
Not really performance critical, but I think it's worth establishing sample
code to use more stack variables than going out to talloc.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
namemap_cache.c saves these as strv lists: An array of 0-terminated strings.
"net cache list" only printfs the values, so they would be cut off.
We might want to do this with other gencache values too in the future.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Don't print the table header for every entry.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12875
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Tue Jul 4 00:12:46 CEST 2017 on sn-devel-144
If we put strings like "Usage:" into separate _() macros and not the whole
"Usage:..." string we can cover much more messages by only one single
translation. The drawback is that the message in the sources looks less pretty.
This provides a compromise between stability and performance: gencache is a
persistent database these days that for performance reasons can not use tdb
transactions for all writes. This patch splits up gencache into gencache.tdb
and gencache_notrans.tdb. gencache_notrans is used with CLEAR_IF_FIRST, writes
to it don't use transactions. By default every 5 minutes and when a program
exits, all entries from _notrans.tdb are transferred to gencache.tdb in one
transaction.
gencache_get/set/del/iterate call gencache_init() internally anyway. And we've
been very lazy calling gencache_shutdown, so this seems not really required.
net cache get was the only one interested in the timeout. That single caller
can take care of the timeout itself then.
With this API change idmap_cache.c can be converted to gencache.
(This used to be commit 2954b2be56)
All 'usage' messages are still printed to stdout.
Fix some compiler warnings for system() calls where we didn't used the
return code. Add appropriate error messages and return with the error
code we got from system() or NT_STATUS_UNSUCCESSFUL.
(This used to be commit f650e3bdaf)
functions so we can funnel through some well known functions. Should help greatly with
malloc checking.
HEAD patch to follow.
Jeremy.
(This used to be commit 620f2e608f)
