Problem Determination for Linux on System z
Lydia Parziale, Manoj S Pattabhiraman, Masayuki Unno, Eravimangalath P. Naveen, Klaus Egeler, Thiago Patricio de Jesus, IBM Redbooks
IBM Redbooks, Aug 25, 2008 - Computers - 360 pages
This IBM Redbooks publication addresses some of the common problems that customers have experienced on the Linux® on System zTM platform. This book provides a problem determination methodology and tools to help the reader diagnose the problem in an easy-to-read self-help manual.
We start with a discussion on how to approach problem solving in the Linux on System z environment and continue on to describe some of the problem determination tools commonly used for z/VM and Linux on system z. We continue with discussions on network problem determination, performance problem determination, and storage problems.
Additionally, we discuss the formation of eligible (or eligibility) lists.
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active boot loader bottleneck cache command common I/O configuration console core dump CPU utilization DASD DASD statistics dasd(eckd debug default device driver disk dispatch list displayed dmesg eligible list emergency scanning eth0 executed file system fsck hardware problem HiperSockets hotplug IBM z/VM Performance indicate init initialized initrd Installing Installing Installing investigation iostat layer Linux guest linux kernel Linux on System linux SuSEfirewall2 Linux system load LPAR lscss memory mode monitoring network interface OMEGAMON operating system OProfile option OSA card output paging parameter port proc processor QDIO qeth queue reboot request_sizes resource root root runlevel running script SCSI segmentation fault shown in Figure shows a sample status strace SUBCHANNEL subsystem swap switch sysfs SysRq TCP/IP udev var/log/messages virtual machine VMDBKs vmlinux vmstat WebSphere workload XSTORE z/VM z/VM Performance Toolkit