From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030206 Description of problem: Bad: The Kernel clock loses synchronization and has actually reversed direction We have been trying to find this problem for some time. Our servers will lose time synchronization, applications will not run correctly and in some instances we are not able to login to the machine. A reboot is necessary to fix the problem. (In our latest case, time can actually be seen going in reverse! - See below) Background: We have two types of servers: NEC MC2400s and HP LP2000Rs. Both of which are dual PIII processor, have 1GB of RAM and a Mylex RAID controller. Our NEC MC2400s do not exibit this problem. The HP LP2000Rs do. All servers are currently running kernel version 2.4.18-19.7.xsmp. (This bug did not appear in the older 2.4.9 kernels) If ntpd is turned off, the server will eventually drift days or months off of the correct time. Since we run ntp by default, it is difficult to ascertain when exactly this problem begins. We do know that it gets bad enough that ntpd is no longer able to keep system synchronization. Most of our HP LP2000R servers have shown this behaviour at least once. Version-Release number of selected component (if applicable): How reproducible: Didn't try Additional info: The following was gleamed from a server experiencing the problem. Mon Feb 24 21:36:30 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:31 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:30 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:33 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:30 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:31 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:32 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:33 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:30 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:31 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:32 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:32 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:33 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:30 MST 2003 [root@sr3dt rc.d]# date Mon Feb 24 21:36:31 MST 2003 It appears as though the last 2 bits of the clock just loop!
we are also facing the similar issue with date on HP LP1000R running RedHat 7.2 with kernel versions 2.4.18-17 and 2.4.18-27 SMP. [gurdeep@test_mac1 /]$ date;/sbin/hwclock --show;date Mon Sep 1 05:15:10 PDT 2003 Wed Sep 3 01:49:01 2003 0.314047 seconds Mon Sep 1 05:15:11 PDT 2003 [gurdeep@test_mac1 /]$ ps -ef|grep -i ntp ntp 13222 1 0 04:30 ? 00:00:00 [ntpd] gurdeep 32629 32530 0 05:15 pts/0 00:00:00 grep -i ntp [gurdeep@test_mac1 /]$ date;/sbin/hwclock --show;date Mon Sep 1 05:15:10 PDT 2003 Wed Sep 3 01:49:16 2003 0.048416 seconds Mon Sep 1 05:15:11 PDT 2003 [gurdeep@test_mac1 /]$ date;/sbin/hwclock --show;date Mon Sep 1 05:15:11 PDT 2003 Wed Sep 3 01:49:21 2003 -0.297336 seconds Mon Sep 1 05:15:11 PDT 2003 [gurdeep@test_mac1 /]$ date;/sbin/hwclock --show;date Mon Sep 1 05:15:11 PDT 2003 Wed Sep 3 01:49:24 2003 0.070420 seconds Mon Sep 1 05:15:11 PDT 2003 [gurdeep@test_mac1 /]$ uname -a Linux test_mac1.Cadence.COM 2.4.18-27.7.xsmp #1 SMP Fri Mar 14 05:52:30 EST 2003 i686 unknown [gurdeep@test_mac1 /]$ cat /etc/issue Red Hat Linux release 7.2 (Enigma) Kernel \r on an \m [gurdeep@test_mac1 /]$ ######################################################################3 root@test_mac2 conf]$ date;/sbin/hwclock --show;date Wed Sep 3 02:28:25 PDT 2003 Wed Sep 3 03:06:41 2003 -0.009537 seconds Wed Sep 3 02:28:25 PDT 2003 [root@test_mac2 conf]$ date ; /sbin/hwclock --show ; date Wed Sep 3 02:28:25 PDT 2003 Wed Sep 3 03:06:43 2003 0.068449 seconds Wed Sep 3 02:28:25 PDT 2003 [root@test_mac2 conf]$ date ; /sbin/hwclock --show ; date Wed Sep 3 02:28:25 PDT 2003 Wed Sep 3 03:06:45 2003 -0.196040 seconds Wed Sep 3 02:28:25 PDT 2003 [root@test_mac2 conf]$ date ; /sbin/hwclock --show ; date Wed Sep 3 02:28:25 PDT 2003 Wed Sep 3 03:06:47 2003 0.020043 seconds Wed Sep 3 02:28:25 PDT 2003 [root@test_mac2 conf]$ [root@test_mac2 conf]$ date ; /sbin/hwclock --show ; date Wed Sep 3 02:28:25 PDT 2003 Wed Sep 3 03:06:49 2003 -0.193202 seconds Wed Sep 3 02:28:25 PDT 2003 [root@test_mac2 conf]$ [root@test_mac2 conf]$ date ; /sbin/hwclock --show ; date Wed Sep 3 02:28:25 PDT 2003 Wed Sep 3 03:06:52 2003 0.000749 seconds Wed Sep 3 02:28:25 PDT 2003 [root@test_mac2 conf]$ [root@test_mac2 conf]$ uname -a Linux test_mac2.Cadence.COM 2.4.18-17.7.xsmp #1 SMP Tue Oct 8 12:37:04 EDT 2002 i686 unknown
Thanks for the bug report. However, Red Hat no longer maintains this version of the product. Please upgrade to the latest version and open a new bug if the problem persists. The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, and if you believe this bug is interesting to them, please report the problem in the bug tracker at: http://bugzilla.fedora.us/