用crash调试linux kernel.pdfVIP

Kernel Debug using Crash utility Document Description of Change Originator Revision/Date V0.1 2011/03/21 Initialization feiphilips_ni@  Add more general tips in section 2 o Check which process eat most memory V0.2 2011/03/23 feiphilips_ni@ o Check memory status  Add “Case Analysis” section  Add “Appendix” section  Add 2.6 “check most cpu eater” V1.0 2011/04/02 feiphilips_ni@  Add 2.7 “check iowait for process” 1 0. Crash introduction 3 1. Filestore Specified 3 2. Starting Point 4 2.1 Check system basic info 4 2.2 Check what’s latest kernel log, 5 2.3 Check which processes are in ‘D’ state, what’s the number? 5 2.4 Check memory status 6 2.5 Check which process eat most memory 7 2.6 Check which process each most of CPU 8 2.7 Check IOWAIT for each process (only worked after 5.7) 9 2.8 Check if “dirty page issue existed” 9 2.9 Check the stack for “write” system call 9 3. Common Utility 10 4. Case Analysis 10 4.1 Escalation 413-673-127 10 4.2 [PRI2][2316592] after slave node changed to primary, it reboot automatically itself . 11 5. Appendix 11 5.1 Where to find related debug version VxFS and VxVM 11 5.2 How to load debug info while running “crash” 11 6. Reference 14 2 0.