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just disable the monitoring during the "startrecovery" event and enable it again once recovery has completed
(This used to be ctdb commit 68029894f80804c9f31fc90ed0c1b58f75812c3d)
since this event wont run unless the recovery mode is normal but we
can not know what the recovery mode will be in the future on a remote node
so since we issue these commands that will execute in the future at some other node
it is pointless to try to check if it worked or not
in particular if "failure to successfully run the eventscript" would then trigger a full new recovery which is disruptive and expensive.
(This used to be ctdb commit 2c292039a0139dcf5bb2bd964eb6f8902d094c50)
This attempts to fix the problem of ctdb event scripts blocking due to
attempted access to the ctdb databases during recovery. The changes are:
- now only the 'shutdown' and 'startrecovery' events can be called
with the databases locked in recovery. The event scripts must ensure
that for these two events no database access is attempted
- the recovered, takeip and releaseip events could previously be called
inside a recovery. The code now ensures that this doesn't happen, delaying
the events till after recovery has finished
- the 50.samba event script now avoids using testparm unless it is really
needed
This needs extensive testing.
(This used to be ctdb commit e3cdb8f2be6a44ec877efcd75c7297edb008a80b)
This enhances the framework for sending tcp tickles to be able to send ipv6 tickles as well.
Since we can not use one single RAW socket to send both handcrafted ipv4 and ipv6 packets, instead of always opening TWO sockets, one ipv4 and one ipv6 we get rid of the helper ctdb_sys_open_sending_socket() and just open (and close) a raw socket of the appropriate type inside ctdb_sys_send_tcp().
We know which type of socket v4/v6 to use based on the sin_family of the destination address.
Since ctdb_sys_send_tcp() opens its own socket we no longer nede to pass a socket
descriptor as a parameter. Get rid of this redundant parameter and fixup all callers.
(This used to be ctdb commit 406a2a1e364cf71eb15e5aeec3b87c62f825da92)
Use tdbdump to verify that all persistent database files are good
before we start the daemon.
(This used to be ctdb commit 13d3eb9a8bc7fad14fcd3e7e023c1336657424d6)
If a transaction could be started, do safe transaction store when updating the record inside the daemon.
If the transaction could not be started (maybe another samba process has a lock on the database?) then just do a normal store instead (instead of blocking the ctdb daemon).
The client can "signal" ctdb that updates to this database should, if possible, be done using safe transactions by specifying the TDB_NOSYNC flag when attaching to the database.
The TDB flags are passed to ctdb in the "srvid" field of the control header when attaching using the CTDB_CONTROL_DB_ATTACH_PERSISTENT.
Currently, samba3.2 does not yet tell ctdbd to handle any persistent databases using safe transactions.
If samba3.2 wants a particular persistent database to be handled using
safe transactions inside the ctdbd daemon, it should pass
TDB_NOSYNC as the flags to the call to attach to a persistent database
in ctdbd_db_attach() it currently specifies 0 as the srvid
(This used to be ctdb commit 8d6ecf47318188448d934ab76e40da7e4cece67d)
grep for lines starting with a '/' character since exportfs will sometimes
split a single export line into two lines of output like this :
[root@fscc-hs21-13 ~]# exportfs
/NFS4exports/tmp
<world>
/NFS4exports <world>
(This used to be ctdb commit 7c569720beb626617d800211faaf9029f0deb4cf)
If we shutdown the transport and CTDB later decides to send a command out
for queueing, the call to ctdb->methods->allocate_pkt() will SEGV.
This could trigger for example when we are in the process of shuttind down CTDBD and have already shutdown the transport but we are still waiting for the
"shutdown" eventscripts to finish.
If the event scripts now take much much longer to execute for some reason, this
race condition becomes much more probable.
Decorate all dereferencing of ctdb->methods-> with a check that ctdb->menthods is non-NULL
(This used to be ctdb commit c4c2c53918da6fb566d6e9cbd6b02e61ae2921e7)
Remove a bogus check inside the recovery daemon that ONLY redistributed public addresses IFF the local node had/served public addresses.
This was a valid optimization long ago when we enforced that all nodes must use the same public addresses file but is invalid today where we can have different public addresses configs on all nodes and even have some nodes that do NOT use public addresses at all.
(This used to be ctdb commit 5833e6b99d9afaf35dc8354df8676b9115418b23)
Should always use type safe talloc functions when possible. In this case we were allocating bytes instead of uint32_t
(This used to be ctdb commit cb14ee57dd0a589242da1ac2830bb7939df460a5)
Closing it here just causes an epoll error, and may close a fd in use by
another structure to be closed. This caused a infinite recovery loop
(This used to be ctdb commit bc251ac7029c2689776a8c31b28ac1d233d52d4f)
Make the 60.nfs eventscript more forgiving when using non-us/english
characters in sharenames
(This used to be ctdb commit f4385712134ea783a0c79a687c5d4e6faa1cc4a7)
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)
handle failure to get/hold the reclock pnn file better and just
treat it as a transient backend filesystem error and try again later
instead of shutting down the recovery daemon
when we have lost the pnn file and if we are recmaster
release the recmaster role so that someone else can become recmaster isntead
(This used to be ctdb commit e513277fb09b951427be8351d04c877e0a15359d)
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)
If no other node is hosting this public ip at the moment, then assign it immediately to the current node.
(This used to be ctdb commit a63825e32658b36e0964584758b9a276c18056b8)
remove the transaction stuff and push so that the git tree will work
This reverts commit 539bbdd9b0d0346b42e66ef2fcfb16f39bbe098b.
(This used to be ctdb commit 7dad1c34f94a433bbb5784cb7156b84bd2e8cd1b)
this collects all public addresses from all nodes and presents the public ips
for the entire cluster
(This used to be ctdb commit cbf79b2158ab21a58aef967e89f0bd60890a7972)
this collects all public addresses from all nodes and presents the public ips
for the entire cluster
(This used to be ctdb commit 0a4e667f42c6fb23be13651f7b0d0a545a49900b)
