Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

quorum_overview(8) [centos man page]

QUORUM_OVERVIEW(8)				    Corosync Cluster Engine Programmer's Manual 				QUORUM_OVERVIEW(8)

NAME
quorum_overview - Quorum Library Overview OVERVIEW
The quorum library is delivered with the corosync project. It is the external interface to the quorum service. This service is loaded into all nodes in a corosync cluster and track the quorum status of a node. In order for quorum service to be useful, a quorum provider must be configured. The library provides a mechanism to: * Query the quorum status * Receive notifications of quorum state changes BUGS
No known bugs at the time of writing. The authors are from outerspace. Deal with it. SEE ALSO
corosync-quorumtool(8), corosync.conf(5), votequorum(5), quorum_initialize(3), quorum_finalize(3), quorum_getquorate(3), quorum_track- start(3), quorum_trackstop(3), quorum_fd_get(3), quorum_dispatch(3), quorum_context_set(3), quorum_context_get(3) corosync Man Page 2012-02-09 QUORUM_OVERVIEW(8)

Check Out this Related Man Page

QUORUM_INITIALIZE(3)				    Corosync Cluster Engine Programmer's Manual 			      QUORUM_INITIALIZE(3)

NAME
quorum_initialize - Create a new connection to the Quorum service SYNOPSIS
#include <corosync/quorum.h> int quorum_initialize(quorum_handle_t *handle, quorum_callbacks_t *callbacks, uint32_t *quorum_type); DESCRIPTION
The quorum_initialize function is used to initialize a connection to the quorum API. Each application may have several connections to the quorum API. Each application uses the handle argument to uniquely identify the con- nection. The handle argument is then used in other function calls to identify the connection to be used for communication with the quorum service. Every time the voting configuraton changes (eg a node joins or leave the cluster) or the quorum status change, the callback is called. The callback function is described by the following type definitions: typedef void (*quorum_notification_fn_t) ( quorum_handle_t handle, uint32_t quorate, uint64_t ring_seq, uint32_t view_list_entries, uint32_t *view_list ); The callbacks argument is of the type: typedef struct { quorum_notification_fn_t quorum_notify_fn; } quorum_callbacks_t; The quorum_type argument is set to: #define QUORUM_FREE 0 #define QUORUM_SET 1 QUORUM_FREE value means that no quorum algorithm is loaded and that no callbacks will take place. QUORUM_SET value means that one quorum algorithm is configured and that callbacks will take place. When a configuration change occurs, the callback is called from the quorum_dispatch() function. RETURN VALUE
This call returns the CS_OK value if successful, otherwise an error is returned. ERRORS
CS_ERR_TRY_AGAIN Resource temporarily unavailable CS_ERR_INVALID_PARAM Invalid argument CS_ERR_ACCESS Permission denied CS_ERR_LIBRARY The connection failed CS_ERR_INTERRUPT System call inturrupted by a signal CS_ERR_NOT_SUPPORTED The requested protocol/functuality not supported CS_ERR_MESSAGE_ERROR Incorrect auth message received CS_ERR_NO_MEMORY Not enough memory to completed the requested task SEE ALSO
quorum_overview(8), quorum_finalize(3), quorum_getquorate(3), quorum_trackstart(3), quorum_trackstop(3), quorum_fd_get(3), quorum_dis- patch(3), quorum_context_set(3), quorum_context_get(3) corosync Man Page 2014-06-10 QUORUM_INITIALIZE(3)
Man Page

9 More Discussions You Might Find Interesting

1. News, Links, Events and Announcements

Usefull HP-UX Man Page Online

Usefull HP-UX Man Page Online Link LINK: HP-UX Man Page http://www.doc.ic.ac.uk/~mac/manuals/hpux-manual-pages/hpux.man1.html (0 Replies)
Discussion started by: killerserv
0 Replies

2. AIX

Check quorum for volume group

Hi all, I would like to ensure that a volume group has an effective quorum setting of 1 (or off). I know you can change the quorum setting using the chvg -Q command but want to know if the setting has been changed before the vg was varied on or a reboot. In other words how can I ensure that... (3 Replies)
Discussion started by: backslash
3 Replies

3. AIX

lvm

Hi. can anyone define about VGDA,VGSA,and quorum in aix.. (1 Reply)
Discussion started by: sumathi.k
1 Replies

4. Emergency UNIX and Linux Support

AIX APPVG - QUORUM LOST, VOLUME GROUP CLOSING

Hi, I am running AIX 5.3 TL8. After a disk failure, one of my mirrored application volumegroups went down. Unfortunately we have quorum switched on on this VG and the defective disk holds the majority. I have set MISSINGPV_VARYON to TRUE and tried a forced varyon but it's still failing. I... (3 Replies)
Discussion started by: zxmaus
3 Replies

5. AIX

LVM - Quorum

Hi all Just a question about quorum. I am running AIX 5.3 Rootvg has 2 PV - not mirrored. quorum is switched on. What happens when one disk fails?, can i replace the disk and bring the entire VG back up. with all the data intact. knowing that the VG will be unavailable until i replace the... (3 Replies)
Discussion started by: Andre54
3 Replies

6. Red Hat

Centos/rhel 5 cluster 3 nodes with out Quorum

Hi all, i have 3 nodes cluster (Centos 5 cluster suit) with out quorum disk, node vote = 1, the value of a quorum = 2, when 2 nodes going offline, cluster services are destoys. How i can save the cluster and all services(move all services to one alive node) with out quorum disk when other... (3 Replies)
Discussion started by: Flomaster
3 Replies

7. UNIX for Dummies Questions & Answers

One service, two nodes, HA

Hi all. I have two nodes taken different places. They are connected together on a network. So, i have a service, it works on one of nodes and when the node is unavailable the service should will be launched on other node. Solution: rhel cluster, keepalive, hearbeat...may be Carp but what if... (2 Replies)
Discussion started by: Flomaster
2 Replies

8. AIX

GPFS quroum with tie-breaker disks

I read from gpfs implementation guide about node quorum with tie-breaker disks: In my testing environment, I have 4 AIX as quorum nodes, each node connected to 3 GPFS disks. All the 3 disks are configured to be tie-breaker disks. Then, I disconnect the network of 2 nodes, and then all gpfs file... (0 Replies)
Discussion started by: skeyeung
0 Replies

9. Solaris

Precaution during Quorum Server Reboot

Hi I need to know what are the precaution we should take during quorum server reboot as this quorum server is providing quorum devices to five different solaris two node clusters. Also let me know do I have to follow below procedure as well before and after reboot of quorum server Do I... (3 Replies)
Discussion started by: sb200
3 Replies

Featured Tech Videos