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mainly useful for avoiding ack-storms when doing very rapid
failover/failback during testing but should not be required in
real-world.
this gets rid of a lof of annoying messages from the messages file
(This used to be ctdb commit 50d289dcce2caa7c7be9b6faa3b38b69c2237038)
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)
recovery mode back to NORMAL that we can not lock the reclock file
since at this stage it MUST be locked by the recovery daemon.
in order to avoid a non-blocking fnctl() lock from blocking and cause
"issues" we move the 'test that we can not lock reclock file' into a
child process.
(This used to be ctdb commit 3af994641ec2234e37da1fa1f693441586471a7e)
public addresses to nodes deterministic.
Activate it by adding CTDB_SET_DeterministicIPs=1 in /etc/sysconfig/ctdb
When this is set, the first entry in /etc/ctdb/public_addresses will
always be hosted by node 0, when that node is available, the second
entry by node1 and so on.
This tunable allows the allocation of addresses to become very
unbalanced and is only for debugging/testing use.
Beware, this feature requires that /etc/ctdb/public_addresses are
identical on all the nodes in the cluster.
(This used to be ctdb commit f0ca221f235731542090d8a6c86f2b7cd2ce2f96)
eventhough we dont want a blocking lock it does appear that the fcntl()
call can block for a while if gpfs is in the process of rebuilding
itself after a node arriving/leaving the cluster
(This used to be ctdb commit 6c0d206dea7116db71bccb4802a93dd7283249f6)
make sure we read and update the flags from all remote nodes before we
reach the first codepath that can call do_recovery()
since during do_recovery() we need to know what the flags are.
(This used to be ctdb commit e85f3806483ea420559d449e0e4d81bec996740f)
used in single public ip address mode.
when using this argument, --public-interface must also be used.
add a vnn structure to the ctdb context to describe the single public ip
address
update the killtcp control in the daemon that if a socketpair that is to
be killed does not match a normal public address it checks if the
destination address maches the single public ip address and if so uses
that vnn structure from the ctdb context
this allows killtcp to kill also connections to the single public ip
instead of only normal public addresses
(This used to be ctdb commit 5661ba17b91f62821dec1c76056c78b99752a90b)
