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add a new control that causes the node to drop the current nodes list
and reread it from the nodes file.
During this operation, the node will also drop the tcp layer and restart it.
When we drop the tcp layer, by talloc_free()ing the ctcp structure
add a destructor to ctcp so that we also can clean up and remove the references in the ctdb structure to the transport layer
add two new commands for the ctdb tool.
one to list all nodes in the nodesfile and the second a command to trigger a node to drop the transport and reinitialize it with the nde nodes file
(This used to be ctdb commit 4bc20ac73e9fa94ffd43cccb6eeb438eeff9963c)
copy the content of the nodes structure.
this ctdb_address structure contains a pointer which is talloced hanging off the structure itself.
If we copy the content of this structure as we did in assigning to ctdb->address from nodes[i]
then if we talloc_free() the node structure we end up with a wild pointer in ctdb->address
(This used to be ctdb commit 644a7248548260d37df432979b129797750907f4)
specific instance of ctdbd should bind to. This helps when running a
"virtual" cluster on a single machine where all instcances bind to
different alias interfaces.
If --node-ip is specified, then we will only try to bind to this ip
address only. Othervise we fall back to the original method trying the
ip addresses in /etc/ctdb/nodes one by one until we find one we can bind
to.
No variable in /etc/sysconfig/ctdb added since this parameter only makes
sense in a virtual test/debug cluster.
(This used to be ctdb commit d96cb02c2c24f9eabbc53d3d38e90dea49cff3e0)
shut down and restart the transport
othervise, if we use the tcp transport the tcp connection might try to
retransmit the queued data during the time the node is unavailable.
this together with the exponential backoff for tcp means that the tcp
connection quickly reaches the maximum backoff rto which is often 60 or
120 seconds. this would mean that it could take up to 60/120 seconds
before the tcp layer detects that the connection is dead and it has to
be reestablished.
(This used to be ctdb commit 0256db470879ce556b0f00070f7ebeaf37e529ab)
multiple public addresses spread across multiple interfaces on each
node.
this is a massive patch since we have previously made the assumtion that
we only have one public address per node.
get rid of the public_interface argument. the public addresses file
now explicitely lists which interface the address belongs to
(This used to be ctdb commit 462ebbc791e906a6b874c862defea43235597ca8)
to start a recovery session. The node is banned from the cluster for the RecoveryBanPeriod (default of 5 minutes)
(This used to be ctdb commit 4ad43dd07f526b6002477177fbf55483246c2c0c)
CTDB_FLAG_TORTURE, which forces some race conditions to be much more
likely. For example a 20% chance of not getting the lock on the
first try in the daemon
- abstraced the ctdb_ltdb_lock_fetch_requeue() code to allow it to
work with both inter-node packets and client->daemon packets
- fixed a bug left over in ctdb_call from when the client updated the
header on a call reply
- removed CTDB_FLAG_CONNECT_WAIT flag (not needed any more)
(This used to be ctdb commit 7559dcd184666c3853127e3c8f5baef4fea327c4)
us to put memory directly in the right context, avoiding quite a few
talloc_steal calls, and simplifying the code
- make the fetch lock code in the daemon fully async
(This used to be ctdb commit d98b4b4fcadad614861c0d44a3854d97b01d0f74)
We need this since there is no guarantee that INADDR_ANY (which would be defaulted to if we dont bind) would be routable from the remote host.
This is entirely possible to happen since CTDB traffic is likely to be isolated to a private non-routable network.
(This used to be ctdb commit e0743d2f84ca0088734c912e210deb93a6b78860)
added transport level packet allocator, allowing the transport to
enforce alignment or special memory rules
(This used to be ctdb commit 50304a5c4d8d640732678eeed793857334ca5ec1)
- added --self-connect option to ctdb_test, allowing testing when a
node connects to itself. not as efficient as local bypass, but very
useful for testing purposes (easier to work with 1 task in gdb than
2)
- split the ctdb_call() into an async triple, in the style of Samba4
async functions. So we now have ctdb_call_send(), ctdb_call_recv()
and ctdb_call().
- added the main ctdb_call protocol logic. No error checking yet, but
seems to work for simple cases
- ensure we initialise the length argument to getsockopt()
(This used to be ctdb commit 95fad717ef5ab93be3603aa11d2878876fe868d3)
- split up ctdb layer code into 3 modules
- added a simple test suite
- added packet structures for ctdb_call
- switched to an array for ctdb_node to make vnn lookup easy and fast
(This used to be ctdb commit 8a17460a816a5970f2df8244a06aec55d814f186)
- added basic IO handling for the tcp backend
- added a ctdb_node_dead upcall
- added packet queueing
- adding incoming packet handling
(This used to be ctdb commit 415497c952630e746e8cdcf8e1e2a7b2ac3e51fb)
