Date: Mon, 23 Jul 2018 18:08:57 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r336645 - head/usr.sbin/crashinfo Message-ID: <201807231808.w6NI8vIJ034600@repo.freebsd.org>
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Author: jhb Date: Mon Jul 23 18:08:56 2018 New Revision: 336645 URL: https://svnweb.freebsd.org/changeset/base/336645 Log: Support compressed crash dumps in crashinfo(8). Temporarily decompress a copy of a crash dump compressed with either gzip or zstd and run various tools against the decompressed copy while generating the crash information. The uncompressed copy is deleted when the script exits. Note that crashinfo is enabled by default, so this will attempt to decompress the most recent compressed crash dump after a crash that generates a compressed crash dump. Users who wish to only do offline analysis of compressed crash dumps can disable crashinfo in rc.conf. Tested by: ler Reviewed by: markj MFC after: 2 weeks Modified: head/usr.sbin/crashinfo/crashinfo.sh Modified: head/usr.sbin/crashinfo/crashinfo.sh ============================================================================== --- head/usr.sbin/crashinfo/crashinfo.sh Mon Jul 23 17:38:35 2018 (r336644) +++ head/usr.sbin/crashinfo/crashinfo.sh Mon Jul 23 18:08:56 2018 (r336645) @@ -38,6 +38,13 @@ usage() exit 1 } +# Remove an uncompressed copy of a dump +cleanup() +{ + + [ -e $VMCORE ] && rm -f $VMCORE +} + # Find a gdb binary to use and save the value in GDB. find_gdb() { @@ -133,7 +140,7 @@ if [ $# -eq 1 ]; then # Figure out the crash directory and number from the vmcore name. CRASHDIR=`dirname $1` - DUMPNR=$(expr $(basename $1) : 'vmcore\.\([0-9]*\)$') + DUMPNR=$(expr $(basename $1) : 'vmcore\.\([0-9]*\)') if [ -z "$DUMPNR" ]; then echo "Unable to determine dump number from vmcore file $1." exit 1 @@ -174,8 +181,16 @@ if [ -z "$GDB" ]; then fi if [ ! -e $VMCORE ]; then - echo "$VMCORE not found" - exit 1 + if [ -e $VMCORE.gz ]; then + trap cleanup EXIT HUP INT QUIT TERM + gzcat $VMCORE.gz > $VMCORE + elif [ -e $VMCORE.zst ]; then + trap cleanup EXIT HUP INT QUIT TERM + zstdcat $VMCORE.zst > $VMCORE + else + echo "$VMCORE not found" + exit 1 + fi fi if [ ! -e $INFO ]; then
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