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-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.