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
_______________________________________________
svn-src-head@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
