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From: Peter Holm <pho@FreeBSD.org>
Date: Tue, 16 May 2017 09:12:29 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-user@freebsd.org
Subject: svn commit: r318342 - user/pho/stress2/misc
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Author: pho
Date: Tue May 16 09:12:29 2017
New Revision: 318342
URL: https://svnweb.freebsd.org/changeset/base/318342
Log:
Add the bug report number which inspired this scenario and tune the disk
size.
Sponsored by: Dell EMC Isilon
Modified:
user/pho/stress2/misc/gjournal3.sh
Modified: user/pho/stress2/misc/gjournal3.sh
==============================================================================
--- user/pho/stress2/misc/gjournal3.sh Tue May 16 09:08:23 2017 (r318341)
+++ user/pho/stress2/misc/gjournal3.sh Tue May 16 09:12:29 2017 (r318342)
@@ -31,6 +31,9 @@
# Deadlock seen: http://people.freebsd.org/~pho/stress/log/gjournal3.txt
# Fixed in r244925
+# panic: Bio not on queue
+# https://people.freebsd.org/~pho/stress/log/gjournal3-2.txt
+
# kib@ wrote:
# gjournal is good for exposing the suspension problems. The frequency
# of the suspensions called from the gjournal is not achievable by other
@@ -38,17 +41,26 @@
# only establishes the suspension, without snapshotting, which also
# makes it easier to see the issues.
+# gjournal / ffs snapshot suspension deadlock:
+# https://people.freebsd.org/~pho/stress/log/gjournal3-4.txt
+# Originally reported as kern/164252.
+
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
. ../default.cfg
-size="2g"
+[ `swapinfo | wc -l` -eq 1 ] && exit 0
+size="6g"
+jsize="4g"
+[ $((`sysctl -n hw.usermem` / 1024 / 1024 / 1024)) -le ${size%g} ] && exit 0
+[ `swapinfo -k | tail -1 | awk '{print int($4/1024/1024)}'` -lt \
+ ${size%g} ] && exit 0
mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
-mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
+[ -c /dev/mdmd$mdstart ] && mdconfig -d -u $mdstart
mdconfig -a -t swap -s $size -u $mdstart || exit 1
gjournal load
-gjournal label md$mdstart
+gjournal label -s $jsize md$mdstart
sleep .5
newfs -J /dev/md$mdstart.journal > /dev/null
mount -o async /dev/md$mdstart.journal $mntpoint