Here are the packages that caused the lockup: [root@fenmrdev02 ~]# rpm -qa | grep sg3 sg3_utils-libs-1.25-4.el5 sg3_utils-1.25-4.el5 sg3_utils-devel-1.25-4.el5 The big question is WHY? <div class="gmail_quote"> On Thu, Nov 12, 2009 at 3:30 PM, Alan A <<a href="mailto:alan.zg@gmail.com">alan.zg@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> This is the error I get trying to start gfs service. What does this mean? Nov 12 15:28:20 fenmrdev04 ntpd[3340]: kernel time sync enabled 0001 Nov 12 15:28:26 fenmrdev04 gfs_controld[2935]: retrieve_plocks: ckpt open error 12 a11 Nov 12 15:28:26 fenmrdev04 gfs_controld[2935]: retrieve_plocks: ckpt open error 12 surv34 Nov 12 15:28:26 fenmrdev04 gfs_controld[2935]: retrieve_plocks: ckpt open error 12 account61 Nov 12 15:28:26 fenmrdev04 gfs_controld[2935]: retrieve_plocks: ckpt open error 12 acct63 Nov 12 15:28:26 fenmrdev04 gfs_controld[2935]: retrieve_plocks: ckpt open error 12 gfs_web Nov 12 15:28:26 fenmrdev04 gfs_controld[2935]: retrieve_plocks: ckpt open error 12 cati_gfs Nov 12 15:28:27 fenmrdev04 gfs_controld[2935]: retrieve_plocks: ckpt open error 12 gfs_cmdr -- Alan A. </blockquote></div> -- Alan A.