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fallback to the old-style ipv4-only controls if the new-style ipv4/ipv6
control fails.
this allows a 1.0.59+ (ipv4/ipv6) ctdb daemon being recmaster to be
compatible with
pre-1.0.59 versions of ctdb that are ipv4 only.
(This used to be ctdb commit 8e912abc2c68f5fe7b06c600ba6fec1a6900127c)
older ipv4-only version of these controls.
We need this so that we are backwardcompatible with old versions of ctdb
and so that we can interoperate with a ipv4-only recmaster during a
rolling upgrade.
(This used to be ctdb commit 6b76c520f97127099bd9fbaa0fa7af1c61947fb7)
we currently only monitor that the dameons are running by kill(0, pid)
and verifying the the domain socket between them is ok.
this is not sufficient since we can have a situation where the recovery
daemon is hung.
this new code monitors that the recovery daemon is operating.
if the recovery hangs, we log this and shut down the main daemon
(This used to be ctdb commit cd69d292292eaab3aac0e9d9fc57cb621597c63c)
This file creates additional locking stress on the backend filesystem and we may not need it anyway.
(This used to be ctdb commit 84236e03e40bcf46fa634d106903277c149a734f)
so that we output the same list of keys in "catdb" as "tdbdump".
when traversing a persistent database, as an optimization, only
traverse on the local node (and thus skip checking if we are
dmaster or not). If the local node is not part of the vnnmap and thus
would not be guaranteed to have an uptodate persistent database
we instead traverse it on one of the other nodes that are in the vnnmap.
(This used to be ctdb commit 2b0bd6c302545f2533a7a67dfc6bb5f9f60799f7)
this callback is called for every node where the control failed (or timed out)
when we issue the start recovery control from recovery master,
set any node that fails as a culprit so it will eventually be banned
(This used to be ctdb commit 72f89bac13cbe8c3ca3e7a942469cd2ff25abba2)
ctdb_attach() so that we can pass TDB_NOSYNC when we attach to
a persistent database and want fast unsafe writes instead of
slow but safe tdb_transaction writes.
enhance the ctdb_persistent test suite to test both safe and unsafe writes
(This used to be ctdb commit 4948574f5a290434f3edd0c052cf13f3645deec4)
This allows us to use the async framework also for controls that return
outdata.
Add a "capabilities" field to the ctdb_node structure. This field is
only initialized and kept valid inside the recovery daemon context and not
inside the main ctdb daemon.
change the GET_CAPABILITIES control to return the capabilities in outdata instead of in the res return variable.
When performing a recovery inside the recovery daemon, read the capabilities from all connected nodes and update the ctdb->nodes list of nodes.
when building the new vnnmap after the database rebuild in recovery, do not include any nodes which lack the LMASTER capability in the new vnnmap.
Unless there are no available connected node that sports the LMASTER capability in which case we let the local node (recmaster) take on the lmaster role temporarily (i.e. become a member of the vnnmap list)
(This used to be ctdb commit 0f1883c69c689b28b0c04148774840b2c4081df6)
Define two capabilities :
can be recmaster
can be lmaster
Default both capabilities to YES
Update the ctdb tool to read capabilities off a node
(This used to be ctdb commit 50f1255ea9ed15bb8fa11cf838b29afa77e857fd)
The controls only modify the runtime setting of which public addresses a node
can server and does not modify /etc/ctdb/public_addresses.
To make the change permanent you also need to edit /etc/ctdb/public_addresses
manually.
After ip addresses have been added/deleted you need to invoke a recovery
for the ip addresses to be redistributed.
(This used to be ctdb commit f8294d103fdd8a720d0b0c337d3973c7fdf76b5c)
Add back the controls to enable/disable monitoring we used to have for debugging but removed a while ago
(This used to be ctdb commit 8477f6a079e2beb8c09c19702733c4e17f5032fe)
This can cause a memory leak if the call is terminated before we have managed to respond to the client.
(and the call is talloc_free()d but the data is still hanging off ctdb)
instead we must talloc_steal() the data and hang it off the call structure to avoid the memory leak.
In order to do this we must also change the call structure that is passed into ctdb_call_local() to be allocated through talloc().
This structure was previously either a static variable, or an element of a larger talloc()ed structure (ctdb_call_state or ctdb_client_call_state) so
we must change all creations of a ctdb_call into explicitely creating it through talloc()
(This used to be ctdb commit 4becf32aea088a25686e8bc330eb47d85ae0ef8f)
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)
ctdb vacuum : vacuums all the databases, deleting any zero length
ctdb records
ctdb repack : repacks all the databases, resulting in a perfectly
packed database with no freelist entries
(This used to be ctdb commit 3532119c84ab3247051ed6ba21ba3243ae2f6bf4)
monitoring should always be enabled
(though a node may want to temporarily disable running the "monitor"
event scripts but can do so internally without the need for this
control)
(This used to be ctdb commit e3a33618026823e6af845fd8513cddb08e6b5584)
