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Full Discussion: Hang linux server :(
Top Forums UNIX for Dummies Questions & Answers Hang linux server :( Post 76224 by TioTony on Sunday 26th of June 2005 07:58:38 PM
Old 06-26-2005
I had a similar problem but is was RHAS 2.1 and RHAS 3.0 on the same system. 2.1 would just die every once and a while but 3.0 was fine. It was caeued by the hangcheck timer (or watchdog/softdog). Heavy disk IO was causing the timer to fail to check in which would cause the sytem to reboot. Because it was a hard reboot syslogd wouldn't have time to write to the /var/logs so it took a while to figure out what the problem was. I caught it once we had built the RHAS 2.1 cluster with the machine. The other node would have STONITH messages in it's log. I guess the end of this story is to do an 'lsmod' and see if you have any similar modules installed that might react this way.
 

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LEARN ABOUT SUSE

uuid_compare

UUID_COMPARE(3) 						    Libuuid API 						   UUID_COMPARE(3)

NAME

       uuid_compare - compare whether two UUIDs are the same

SYNOPSIS

       #include <uuid/uuid.h>

       int uuid_compare(uuid_t uu1, uuid_t uu2)

DESCRIPTION

       The uuid_compare function compares the two supplied uuid variables uu1 and uu2 to each other.

RETURN VALUE

       Returns	an  integer  less  than, equal to, or greater than zero if uu1 is found,  respectively, to be lexigraphically less than, equal, or
       greater than uu2.

AUTHOR

       Theodore Y. Ts'o

AVAILABILITY

       libuuid is part of the util-linux-ng package since version 2.15.1 and is  available  from  ftp://ftp.kernel.org/pub/linux/utils/util-linux-
       ng/.

SEE ALSO

       uuid(3), uuid_clear(3), uuid_copy(3), uuid_generate(3), uuid_is_null(3), uuid_parse(3), uuid_unparse(3)

util-linux-ng							     May 2009							   UUID_COMPARE(3)
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