Let me check. What kernel level are using? -------- Original message -------- From: "Morris, Kevin J. (RET-DAY)" <[email protected]> Date: 5/24/2016 22:51 (GMT+02:00) To: [email protected] Subject: [LINUX-390] HyperPAV boot issues on ClefOS 6.7
We have ~20 zLinux systems running in their own LPARs (no zVM) all on RHEL 6.4 without any issues over the past year. All systems were rebooted weekly, again without any issues. We are in the process of migrating them to ClefOS 6.7 and have started to experience random errors with the file system check at reboot essentially causing the box to hang until someone manually intervenes. The following messages are displayed on the console: *** An error occurred during the file system check. *** Dropping you to a shell; the system will reboot *** when you leave the shell. Give root password for maintenance (or type Control-D to continue): These reboot issues occur about 20% of the time. They are random but frequently reproducible. I don't see any other messages that indicate which file system is having problems. But the box generally comes back up with a reboot which leads me to believe there is no REAL file system corruption. Through the process of elimination, I believe it is related to HyperPAV. We are using the exact same /etc/dasd.conf file under ClefOS 6.7 that we were using on RHEL 6.4. The file includes ucbs for 3 other base volumes (e956-e958) and then ~220 HyperPAV alias ucbs (e890-e9ff). Like this: 0.0.e956 readonly=0 erplog=0 failfast=0 0.0.e957 readonly=0 erplog=0 failfast=0 0.0.e958 readonly=0 erplog=0 failfast=0 0.0.e890 readonly=0 erplog=0 failfast=0 0.0.e891 readonly=0 erplog=0 failfast=0 0.0.e892 readonly=0 erplog=0 failfast=0 ... 0.0.e9ff readonly=0 erplog=0 failfast=0 If I remove the PAV aliases from /etc/dasd.conf, the reboot problems appear to go away -- I can reboot 50 times without an issue. Obviously, we want to use HyperPAV, so simply removing the aliases isn't really a "fix". Can anyone offer any advice on how solve this problem or further debug the issue. Something apparently changed between RHEL 6.4 and ClefOS (RHEL) 6.7. Thanks, Kevin Morris Reed Elsevier - Technology Services zOS Systems Engineering ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
