[ovs-git] Open vSwitch: ovs-vsctl: Replicate only tables and columns that are actually needed. (master)

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- Log -----------------------------------------------------------------
commit e5e12280e1b6dbad79742ce43e9bb10545281f5e
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=e5e12280e1b6dbad79742ce43e9bb10545281f5e
Author: Ben Pfaff <blp at nicira.com>
		
ovs-vsctl: Replicate only tables and columns that are actually needed.
		
Until now, ovs-vsctl has always fetched a complete replica of the Open
vSwitch database at startup time.  This is a little expensive, but that is
not normally a problem because the database is small.   However, it can
cause problems when Open vSwitch is partially upgraded: if ovs-vsctl is
upgraded before the database, and new columns or tables were added to the
database schema in the newer version of Open vSwitch, then ovs-vsctl will
report an error and fail to work, because it cannot monitor the new
columns.  The same problem occurs if the database is upgraded before
ovs-vsctl and columns or tables were removed in the new version of Open
vSwitch.

This commit fixes the problem in the most common case, by making ovs-vsctl
only replicate the columns and tables in the database that it will actually
use during a given execution.  This will still fail if the database has
changed in major ways, but only if the changes would actually cause
problems for what ovs-vsctl is trying to do anyhow.

Bug #3388.


commit ef73f86cd4f7ec0cd2d3f9526167a0d0f6be4f63
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=ef73f86cd4f7ec0cd2d3f9526167a0d0f6be4f63
Author: Ben Pfaff <blp at nicira.com>
		
ovsdb-idl: Make selecting tables and columns to replicate more flexible.
		
Until now, by default the IDL replicated all tables and all columns in the
database, and a few functions made it possible to avoid replicating
selected columns.  This commit adds a mode in which nothing is replicated
by default and the client code is responsible for specifying each column
and table that it is interested in.  The following commit adds a user for
this mode.


commit cbb7baddb826a7e0fda8d6cd352101276cd7c774
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=cbb7baddb826a7e0fda8d6cd352101276cd7c774
Author: Ben Pfaff <blp at nicira.com>
		
ovsdb: Support replicating a table without including any columns.
		
The OVSDB wire protocol has a "monitor" feature that supports table
replication on a column-by-column basis.  This wire protocol in theory
supports replicating a table without replicating any columns in it.  In
such a case, the client only tracks the UUIDs of the rows in the table.
However, the ovsdb-server implementation did not support this possibility
properly.  This commit fixes the bug.


-----------------------------------------------------------------------

Summary of changes:
 lib/ovsdb-idl-provider.h |   25 +---
 lib/ovsdb-idl.c          |  161 ++++++++++++++------
 lib/ovsdb-idl.h          |   43 +++++-
 ovsdb/jsonrpc-server.c   |   51 ++++---
 tests/test-ovsdb.c       |    2 +-
 utilities/ovs-vsctl.c    |  387 ++++++++++++++++++++++++++++++++++++++++------
 vswitchd/bridge.c        |   10 +-
 vswitchd/ovs-brcompatd.c |    2 +-
 8 files changed, 534 insertions(+), 147 deletions(-)


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