New key with faulty status of ring is created in cmap as name
runtime.totem.pg.mrp.rrp.$ring_number.faulty
Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Steven Dake <sdake@redhat.com>
this is necessary when switching from 2 nodes to 1 one in auto_tie_breaker
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
this change allow a node to rejoin a cluster that has already seen
wait_for_all and reset the flag if the partition that the node is joining
is quorate.
Also propagate current wait_for_all_status and quorate info via nodeinfo.
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
left_member_entries is never set when totem config change is regular.
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
Effectively there are 2 kind of quorum notifications that cannot be merged into 1.
config_change: when the quorum membership changes, triggered by totem/membership changes
(node join/leave)
quorum_status_changes: same membership node becomes quorate or not.
A quorum status change does not necessarely match a membership change, hence it needs
to be dispatched separately.
An example is a cluster that is not quorate, user changes the amount of votes in a node to
regain quorum. No membership changes happen at this point, but votequorum will
effectively broadcast the votes: XX change and recalculate quorum.
In turn we need to notify quorum users.
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
first pass to bring votequorum at corosync codying style.
fix whitespaces, add missing {}, fix comments, be consistent with
ENTER/LEAVE usage, be consistent with some functions variable names
and some more cosmetic changes
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
this flag (0|1) can be configured via quorum.last_man_standing and when
enabled, it allows expected_votes to be dynamically recalculated.
Assuming an 8 nodes cluster, every node votes 1 (mandatory requirement for
this feature).
In the first event, 3 nodes are lost.
The remaining partition of 5 is barely quorate.
After a configurable timeout (quorum.last_man_standing_window, default 10sec)
the quorate partition is allow to recalculate expected_votes based on
the remaining nodes.
This operation will bring expected_votes to 5 and quorum to 3.
Repeating the above loop, in the next event, 2 more nodes are allowed to
die. etc. etc.
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
this is a very old leftover from the RHEL5 timeframe, not used in RHEL6.
Also change votequorum soname since this change implies an ABI change.
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
this is necessary to reset the wait_for_all data when a node is joining a cluster
that has already seen all nodes once.
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
this flag (0|1) can be configured via quorum.auto_tie_breaker and when
enabled, support for perfect even split is on.
In case of a 50% of votes loss in one single transition, the partition
with the node that has the lowest node id will remain quorate.
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
this flag (0|1) can be configured via quorum.wait_for_all and changes
behavior when granting quorum for the first time.
Normal behavior (default / 0) grants quorum as soon as enough nodes
are available in a cluster.
Setting this value to 1 will grant quorum only after all cluster
memembers are part of the cluster at the same time.
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
corosync internal theory of operation is that without a quorum provider
the cluster is always quorate. This is fine for membership free clusters
but it does pose a problem for applications that need membership and
"real" quorum.
this change add quorum_type to quorum_initialize call to return QUORUM_FREE
or QUORUM_SET. Applications can then make their own decisions to error out
or continue operating.
The only other way to know if a quorum provider is enabled/configured is
to poke at confdb/objdb, but adds an unnecessary burden to applications
that really don't need to use an entire library for a boolean value.
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
Our preferred shared logging system is exported via the libqb library. As
a result, the corosync project no longer needs to export logsys.so and the
code can be directly included in the binary. The header file can also be
removed.
Signed-off-by: Steven Dake <sdake@redhat.com>
Reviewed-by: Jan Friesse <jfriesse@redhat.com>
switch from LOG_INFO to LOG_DEBUG for some basic operations
Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
Included are following parts:
- XSLT template with actual conversion
- simple wrapper on top of xsltproc called corosync-xmlproc
- example XML file
Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Steven Dake <sdake@redhat.com>
