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Commit Graph

23 Commits

Author SHA1 Message Date
Martin Schwenke
3783b66fb3 ctdb-build: Split protocol-util as a separate subsystem
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2017-09-19 13:30:26 +02:00
Martin Schwenke
75d0822985 ctdb-ipalloc: Add per-IP known_on bitmap
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2017-02-24 07:47:12 +01:00
Martin Schwenke
5bb6ec6af2 ctdb-ipalloc: Switch noiphost to struct bitmap
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2017-02-24 07:47:11 +01:00
Martin Schwenke
0b4e609194 ctdb-ipalloc: Switch available_on to struct bitmap
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2017-02-24 07:47:11 +01:00
Martin Schwenke
3d80fdd580 ctdb-takeover: NoIPHostOnAllDisabled is global across cluster
Instead of gathering the value from all nodes, just use the value on
the recovery master and have it affect all nodes.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-12-19 04:07:08 +01:00
Martin Schwenke
9b456bc730 ctdb-takeover: NoIPTakeover is global across cluster
Instead of gathering the value from all nodes, just use the value on
the recovery master and have it affect all nodes.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-12-19 04:07:08 +01:00
Martin Schwenke
429377a242 ctdb-ipalloc: Optimise check to see if IP is available on a node
Use a "bitmap" of available IPs for each IP address instead of walking
the list of available IP addresses.

For ctdb/tests/takeover/lcp2.030.sh, this improves the time taken on
my laptop from:

  real	0m11.997s
  user	0m11.960s
  sys	0m0.000s

to

  real	0m8.571s
  user	0m8.544s
  sys	0m0.000s

So, when assigning all 900 IP addresses the improvement is about 25%.

For the no-op case (where all IPs are already assigned to nodes), the
extra setup adds a small fraction of a second for 900 IPs.
Intermediate cases result in intermediate improvements.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-12-02 00:24:28 +01:00
Martin Schwenke
7ec7d4f3c0 ctdb-ipalloc: ipalloc_set_public_ips() can't fail
So make it a void function.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12254

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-09-14 08:39:29 +02:00
Martin Schwenke
7522a7aee8 ctdb-ipalloc: Move merged IP list creation to ipalloc()
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12254

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-09-14 08:39:29 +02:00
Martin Schwenke
c1efb801a4 ctdb-ipalloc: Drop known_ips argument from merged IP list creation
This is available in the IP allocation state.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12254

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-09-14 08:39:29 +02:00
Martin Schwenke
fed251726f ctdb-ipalloc: Optimise check to see if IPs can be hosted
Add an early return if there are no known IP addresses.

Also add an extra comment for clarification.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12254

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-09-14 08:39:29 +02:00
Martin Schwenke
dfc3b8855d ctdb-ipalloc: Whether IPs can be hosted need not depend on merged IP list
Merged IP list won't be available here...

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12254

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-09-14 08:39:29 +02:00
Martin Schwenke
0e5c62d8fc ctdb-ipalloc: Store known public IPs in IP allocation state
This was dropped because it wasn't used, but it will be needed again.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12254

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-09-14 08:39:28 +02:00
Martin Schwenke
41a14e72b5 ctdb-ipalloc: ipalloc() returns public IP list
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-07-04 15:42:25 +02:00
Martin Schwenke
21adcd32bd ctdb-ipalloc: Move set_ipflags_internal() to ipalloc
Rename it ipalloc_set_node_flags().

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-07-04 15:42:25 +02:00
Martin Schwenke
ee7fc252c8 ctdb-ipalloc: Move ipalloc state initialisation to ipalloc.c
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-07-04 15:42:25 +02:00
Martin Schwenke
86f7c4d7f3 ctdb-ipalloc: Fix buggy short-circuit when no IPs are available
At the moment IP is short-circuited when there are no available IP
addresses.  However, if some IP addresses are already allocated then
"no available IP addresses" means that all the addresses should
(probably) be released.  The current short-circuit means that no
already hosted IP addresses will be released.

The short-circuit exists to avoid lots of messages saying that all IP
addresses can not be assigned at startup time.  So, add a check to
ipalloc_can_host_ips() so that it succeeds if IP addresses are already
allocated to nodes.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-07-04 15:42:25 +02:00
Martin Schwenke
c5d85a071b ctdb-ipalloc: New function ipalloc_can_host_ips()
Abstracts out code involving internals of IP allocation state.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-07-04 15:42:25 +02:00
Martin Schwenke
695da518de ctdb-ipalloc: Drop known public IPs from IP allocation state
This is never used in the allocation algorithms.  It is only used when
building the merged IP list.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-07-04 15:42:25 +02:00
Martin Schwenke
e8ff433c46 ctdb-ipalloc: Move create_merged_ip_list() into ipalloc
How the existing IP layout is constructed and how the merged IP list is
sorted are important aspects of the IP allocation algorithm.  Construct the
merged IP list when known and available IPs are assigned.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-07-04 15:42:25 +02:00
Martin Schwenke
5c47c35c5a ctdb-ipalloc: New function ipalloc_set_public_ips()
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-07-04 15:42:25 +02:00
Volker Lendecke
93e48df86c ctdb: Fix the O3 developer build
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
2016-01-14 19:37:19 +01:00
Martin Schwenke
e320725f02 ctdb-ipalloc: Split IP allocation into its own build subsystem
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2016-01-13 20:18:20 +01:00