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| author | Anuradha Talur <atalur@redhat.com> | 2015-06-29 13:05:35 +0530 |
|---|---|---|
| committer | Kaleb KEITHLEY <kkeithle@redhat.com> | 2015-06-29 08:14:29 -0700 |
| commit | b7b2b14c1f1ea1d232c5a5d5901c00bd187aa841 (patch) | |
| tree | 2dfffef06fa1c588299e4959a9da8075e7d9edaa /doc/debugging | |
| parent | b343155815716094a70c5428c26ddcb0980a031e (diff) | |
doc : Steps to analize coredumps generated by regression machines.
Change-Id: Iadd879227a08d0dc0706363e7c6c30a6805e19ff
Signed-off-by: Anuradha Talur <atalur@redhat.com>
Reviewed-on: http://review.gluster.org/11453
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
Diffstat (limited to 'doc/debugging')
| -rw-r--r-- | doc/debugging/coredump-analysis.md | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/doc/debugging/coredump-analysis.md b/doc/debugging/coredump-analysis.md new file mode 100644 index 00000000000..f9ecf73216e --- /dev/null +++ b/doc/debugging/coredump-analysis.md @@ -0,0 +1,31 @@ +This document explains how to analyze core-dumps obtained from regression +machines, with examples. +1) Download the core-tarball and extract it. +2) 'cd' into the root of extracted tarball. +~~~ +[root@atalur Downloads]# pwd +/home/atalur/Downloads +[root@atalur Downloads]# ls +build build-install-20150625_05_42_39.tar.bz2 lib64 usr +~~~ +3) Determine the core file you need to examine. There can be more than one core file. +You can list them from './build/install/cores' directory. +~~~ +[root@atalur Downloads]# ls build/install/cores/ +core.9341 liblist.txt liblist.txt.tmp +~~~ +In case you are unsure which binary generated the core-file, executing 'file' command on it will help. +~~~ +[root@atalur Downloads]# file ./build/install/cores/core.9341 +./build/install/cores/core.9341: ELF 64-bit LSB core file x86-64, version 1 (SYSV), SVR4-style, from '/build/install/sbin/glusterfsd -s slave26.cloud.gluster.org --volfile-id patchy' +~~~ +As seen, the core file was generated by glusterfsd binary, and path to it is provide (/build/install/sbin/glusterfsd). +4) Now, run the following command on the core: +~~~ +gdb -ex 'set sysroot ./' -ex 'core-file ./build/install/cores/core.xxx' <target, say ./build/install/sbin/glusterd> +In this case, +gdb -ex 'set sysroot ./' -ex 'core-file ./build/install/cores/core.9341' ./build/install/sbin/glusterfsd +~~~ +5) You can cross check if all shared libraries are available and loaded by using 'info sharedlibrary' command from +inside gdb. +6) Once verified, usual gdb commands based on requirement can be used to debug the core. |