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Maintenance Commands

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vcsmmdebug - Set up debugging of VCSMM driver.


vcsmmdebug -s opt

vcsmmdebug -u opt

vcsmmdebug -p type [-S bufsize] [-d delay [-o file]]

vcsmmdebug -A

vcsmmdebug -D [-S bufsize] [-d delay [-o file]]

vcsmmdebug -t

vcsmmdebug -h




The vcsmmdebug command sets the appropriate debug flag in the kernel for the VCSMM driver and can be used to print the debug log.


-s or -u opt
Set up debugging of VCSMM driver setting or clearing the appropriate flag. -s will set the option, and -u will unset it. The arguments for opt, are as follows:
all - always print all debug messages lists - list manipulations interface - interface to vcsmm driver request - broadcast requests from vcsmm reconfig - cluster reconfiguration group - application / process groups snap - snapshot sent / received pref - "PREF" buffer - buffer related stuff syslog - copy syslog messages other - miscellaneous types not categorized above dbgmsg - debug point errmsg - error point
Print various pieces of information about the driver state or its history. The type argument may be one of:
memb - current node membership state - the cluster state stats - io statistics dbglog - debug log msglog - message log dbgcat - current debug mask dbgmsg=x - value of debug point x errmsg=x - value of error point x
Print the kernel data structures for VCSMM.
Print the kernel data structures for VCSMM on all nodes to the syslog. These data are syncronized with a GAB broadcast and should all be the same.
Print information about the tunable parameters.
Display usage for command.


To set flag to dump broadcast request and snapshot messages, set: vcsmmdebug -s request,snap

To set flag to dump messages of the interface to the vcsmm driver, of groups, and snapshots, set: vcsmmdebug -s interface,group,snap



Last updated: Jul 2008
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