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Full Discussion: Linux Cluster failover issue
Operating Systems Linux Red Hat Linux Cluster failover issue Post 302896095 by munna529 on Friday 4th of April 2014 10:59:42 AM
Old 04-04-2014
Thanks for the information. i worked on windows cluster as we are doing some array based migrations using mpxtool(block level) copy. Now we are working on linux hosts and usually it is an offline migration.
I see some hosts are possible clusters so i want to determine which hosts are cluster ? We have suse systems so i figured out on one server it shows this output does that mean is this a cluster ?

Code:
     #-> find / -name hacluster /var/lib/heartbeat/cores/hacluster

[root@itsusral00019:/]#
Code:
     #-> find / -name cluster
 /lib/modules/2.6.16.60-0.97.1-smp/kernel/fs/ocfs2/cluster
 /lib/modules/2.6.16.60-0.101.1-smp/kernel/fs/ocfs2/cluster
 /lib/modules/2.6.16.60-0.97.1-kdump/kernel/fs/ocfs2/cluster
 /lib/modules/2.6.16.60-0.101.1-kdump/kernel/fs/ocfs2/cluster
 /opt/VRTSpbx/bin/cluster
 /usr/src/linux-2.6.16.60-0.101.1/fs/ocfs2/cluster

[root@itsusral00019:/]#
Code:
     #-> clustat -bash: clustat: command not found

[root@itsusral00019:/]#
Code:
     

     #-> hastatus -sum -bash: hastatus: command not found

from the above output i see this host doesn't have veritas cluster but there is some hacluster when i tried to look for cluster.conf file i dont see and i am not aware for this hacluster.

If you know anything about this please let me know this would be very helpful.
Last edited by munna529; 04-04-2014 at 12:04 PM.. Reason: code tags
 

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LEARN ABOUT OPENSOLARIS

scds_fm_sleep

scds_fm_sleep(3HA)					 Sun Cluster HA and Data Services					scds_fm_sleep(3HA)

NAME

       scds_fm_sleep - wait for a message on a fault monitor control socket

SYNOPSIS

       cc [flags...] -I /usr/cluster/include file -L /usr/cluster/lib  -l  dsdev
       #include <rgm/libdsdev.h>

       scha_err_t scds_fm_sleep(scds_handle_t handle, time_t timeout

DESCRIPTION

       Thescds_fm_sleep() function waits for a data service application process tree that running under control of the process monitor facility to
       die. If no such death occurs within  the  specified  timeout period, the function returns SCHA_ERR_NOERR.

       If a data  service  application process tree death occurs, scds_fm_sleep() records SCDS_COMPLETE_FAILURE in the failure history and  either
       restarts  the process tree or fails it over according to the algorithm described in the scds_fm_action(3HA) man page. If a failover attempt
       is unsuccessful, a restart of the application is attempted.

       If an attempted restart fails, the function returns SCHA_ERR_INTERNAL.

       Note that if the failure history causes this function to do a failover, and the failover attempt succeeds, scds_fm_sleep() never returns.

PARAMETERS

       The following parameters are supported:

       handle		   The handle returned from scds_initialize(3HA).

       timeout		   The timeout period measured in seconds.

RETURN VALUES

       The scds_fm_sleep() function returns the following:

       0		   The function succeeded.

       nonzero		   The function failed.

ERRORS

       SCHA_ERR_NOERR		   Indicates that the process tree has not died.

       SCHA_ERR_INTERNAL	   Indicates that the data service application process tree has died and failed to restart.

       Other values		   Indicate the function failed. See scha_calls(3HA) for  the meaning of failure codes.

FILES

       /usr/cluster/include/rgm/libdsdev.h

	   Include file

       /usr/cluster/lib/libdsdev.so

	   Library

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscdev 		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

	scha_calls(3HA), scds_fm_action(3HA), scds_initialize(3HA), attributes(5)

Sun Cluster 3.2 						    7 Sep 2007							scds_fm_sleep(3HA)
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