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specific script /etc/ctdb/events.d/00.ctdb
get rid of CTDB_EVENTS_SCRIPT and --event-script
(This used to be ctdb commit 81ccfaf838e5772d4a58eb6a70224b7b39aba9f3)
instead for from /etc/ctdb/events so that we can get better debugging
output in the logs when something fails in the scripts
(This used to be ctdb commit 4ed96b768aea1611e8002f7095d3c4d12ccf77a3)
tcp connection in the tree that stores the tcp connections to kill by
sending an RST
add a define that specified the keylength instead of hardcoding it as 4
(This used to be ctdb commit 6a8322cbae10f2c78b2e286c75aeb25ece12ea7f)
patches to smnotify to make it compile under AIX.
On AIX, we need to specify $(POPT_OBJ) explicitely
On AIX we can not use the -C flag to rpcgen since it is not implemented
On AIX we must explicitely force an #include of rpc/rpc.h in the idl
file since rpcgen does not automatically add it to the generated files
(This used to be ctdb commit 8c3e7ce645ec829bc465302831cc6b23452525d6)
we store in the tree and use a node destructor so that when the data is
talloc_free()d we also remove the node from the tree.
(This used to be ctdb commit b8dabd1811ebd85ee031563e95085f720a2fa04d)
description (src + dst sockaddr_in) in a linked list.
everytime we receive a captured packet from the network we had to walk
this list in linear time to see if the packet matched a connection we
wanted to RST.
which wouldnt scale very well.
replace the linked list with a redblack tree that is indexed by
src address, src port, dst address, dst port
to make checking whether the packet belongs to a connection we want to
RST very fast and scalable
the reason we need to capture packets when we want to kill a TCP
connection is because we must wait for an ACK coming back from the
remote host so that we can learn which sequence number to use in the
RST.
Most tcp today will ingore any and all RST segments unless the
sequencenumber lies exactly on the right edge of the window to make
spoofing RST a little bit more difficult.
(This used to be ctdb commit ced18caea8582af042287beb6333dd1f8ba3344d)
the data of the tree.
this callback makes it more convenient to manage cases where one might
want to insert multiple entries into the tree with the same key
rename the tree->tree pointer to tree->root since this is supposed to
point to the root of the tree
add a small test utility
(This used to be ctdb commit f6313bed9c53e0d1c36c9e08ac707e88e2a4fcd5)
same key then replace the data in the node with the new data and return
the pointer to the previous data held in the node.
this allows a caller to avoid having to first check if a node already
exists before inserting a possibly duplicate/colliding entry and lets
the caller do whatever it needs to do after the fact.
(This used to be ctdb commit 6634cabb910c26400780d51727ff2d1ba5e16e36)
overkill since
1, we now kill the tcpconnections for lockd in 60.nfs
2, rpc.statd on linux sends out the notifications using the wrong
interface anyway which breaks a lot of clients including linux !
use our own smnotify tool instead of sm-notify
(This used to be ctdb commit 0163ad0ec01be6189a98ea91e5cec40f6750218f)
abort after 3 seconds
fix makefile so that we generate the header before trying to compile
smnotify.o
(This used to be ctdb commit bda310b74d6364bf88032874a1f3a2fb156f9736)
update addr to the source address so the rpintout in the log matches
the client that attached to samba
(This used to be ctdb commit 72098b71c79469c86769ca82bbd484c81902d27c)
the binary tree should work reasonably well now for delete.
insert always worked fine.
(This used to be ctdb commit 452cda26b206549504480b77483308b44cfa8b01)
child nodes which would cause a segv when trying to dereferencing those
two child nodes in order to read their color
(This used to be ctdb commit 56f5fb8f8f3e667f5bc13f09fb5de01f5f2e0fae)
by a talloc_steal()
use the returned pointer in talloc_steal as the value to assign
(This used to be ctdb commit 5c6375ad3bbecfa725ec3b1477f259e5a8191866)
tickles) just talloc_steal the enture tcp_array into the arp
structure instead of copying each of the entries into a linked list
and then releasing the tcparray.
(This used to be ctdb commit 468e237740cf37a65872ef700bbb1284ede8352a)
tickled all connections
othervise the other nodes will still remember this list until next time
we have had a connection/client closing.
(This used to be ctdb commit cb8e5d4bbee2f14f498735489f673ff3679dfd9d)
there is an array for each node/public address that contains tcp tickles
we send a TCP_ADD as a broadcast to all nodes when a client is added
if tcp tickles are removed, they are only removed immediately from the
local node.
once every 20 seconds a node will push/broadcast out the tickle list for
all public addresses it manages. this will remove any deleted tickles
from the remote nodes
(This used to be ctdb commit e3c432a915222e1392d91835bc7a73a96ab61ac9)
ip/node
once we have started sending all tickles for a specific ip delete the
entire array so that the tickles dont remain forever in the ctdb
server
add a control to send the full list of every tickle that is registered
for a particular public ip/node
(This used to be ctdb commit d0eee33e44d3f8e26debbec21d41e2cbdbb520e6)
back to 0 if it is to prevent an infinite loop.
this could happen if in the future we add a mechanism to add/remove
nodes to a cluster at runtime
(This used to be ctdb commit 217e80a468713fec86ccb0608460e3401046bb98)
to keep a static that controls at which noide to start searching the
list for takeover candidates next time we need to find a node.
each time we find a node to takeover, reset the start variable to point
to the next node in the list
this makes the distribution of takeover nodes much more even
(This used to be ctdb commit e9800df5a21079ea478d16f7dd2fd4707de85650)
check for tcp ports
(the check for these tools should not really use hardcoded paths)
(This used to be ctdb commit 56d77082c07a519dd3804cc24cc7ba889b8469ff)
specific routines populate it as it see fit when creating a
capture socket.
pass this structure to read_tcp and close capture socket as parameter
(This used to be ctdb commit 79bbfcfb2223889126fe307d5bbfd24917da07ee)
let the caller create the sending socket and use a single socket instead
of one new one for each tickle.
pass a sending socket to ctdb_sys_send_tcp()
ctdb_sys_kill_tcp is not longer used so remove it
set the socketflags for close on exec and nonblocking in the helper that
creates the sockets instead of in the caller
add a helper to create a sending socket to send tickles from
(This used to be ctdb commit 469f3fb238a0674a2b48fdf1a7e657e32428178a)
we might want to have two sockets attached to the killtcp structure
one for capturing and a second one for sending so we dont have to
create a new socket for each tickle we want to send
(This used to be ctdb commit b3e82ec38047bbec1edfd88ade264077d4cbd2ee)
times to try the reset.
the reset retry attempt is now handled inside the daemon
update the 60.nfs script and remove this parameter that is no longer
used
(This used to be ctdb commit 30fb09b8b9a989e5cfe86b6daf2dcd2487013344)
this allows us to print from which node Invalid or Dropped orphan become
dmaster packets came from
(This used to be ctdb commit 88efd1bf4c796cd2b184156b72296587bc38bb40)
run on the same port on all nodes.
remove the CTDB_MANAGES_NFSLOCK variable that is no longer used
(This used to be ctdb commit 389a503c44c999e46caa344c4bc073336e797909)
the tcp connection
change the 60.nfs script to run ctdb killtcp in the foreground so we
dont get lots of these running in parallel when there are a lot of tcp
connections to rst
(This used to be ctdb commit d81616214752882242f2886e94681972a790db80)
dont let those messages modify the DISCONNECTED flag.
the DISCONNECTED flag must be managed locally since it describes whether
the local node can communicate with the remote node or not
(This used to be ctdb commit 5650673205d335a32d4f27f66847ea66752a00f0)
cluster, we cant check that both the BANNED and the DISCONNECTED flags
are both set at the same time since if a node becomes banned just
before it is DISCONNECTED there is no guarantee that all other nodes
will have seen the BANNED flag.
So we must first check the DISCONNECTED flag only and only if the
DISCONNECTED flag is not set should we check the BANNED flag.
othervise this can cause a recovery loop while some nodes thing the
disconnected node is DISCONNECTED|BANNED and other think it is just
DISCONNECTED
(This used to be ctdb commit 0967b2fff376ead631d98e78b3a97253fc109c69)
- split out the event script code into a separate module
- get rid of the separate takeover directory
(This used to be ctdb commit 8ea2c923a3e2464200ff79bf2c3f1f89e6a93ad4)
to make it possible to provide which seq/ack numbers to use and also
whether the RST flag should be set.
update all callers to the new signature
(This used to be ctdb commit b694d7d4a6f3865a18bea8f484ba690e4ae7546c)
checked in so it is not lost
this tool takes a socketpair as arguments and will reset the tcp
connection
(This used to be ctdb commit bddd448740ef7f5a88b8549a3d184a94ac9fcd96)
add the PREEMPT service action for persistent reservation out so we
can delete someone elses registration from the lun and thus disable that
someone else from reading/writing the lun completely
(This used to be ctdb commit a31aa458f96cbe37a47af79c8d8b92c15198edaa)
calls to a scsi device.
added to bzr so it will not be lost
we need access to an array that supports this optional cdb before we
can proceed and toolify it properly
(the idea is that ctdb should have a mechanism where it can shut out
nodes from accessing the LUNs when it has deemed a node as disconnected)
(This used to be ctdb commit 360573b505c6df8a32996efce3813fa95365a206)
