svn commit: r329285 - projects/zfsd/head/tests/sys/cddl/zfs/tests/zfsd

[Alan Somers]

Author: asomers
Date: Wed Feb 14 23:58:40 2018
New Revision: 329285
URL: https://svnweb.freebsd.org/changeset/base/329285

Log:
  Improve reliability of zfsd_replace_003_pos
  
  Sometimes the test would fail because the new devices appear so quickly that
  the zpool returns to health with no need to resilver.  Force it to resilver
  by doing some I/O while the devices are gone.
  
  Sponsored by:	Spectra Logic Corp

Modified:
  projects/zfsd/head/tests/sys/cddl/zfs/tests/zfsd/zfsd_replace_003_pos.ksh

Modified: projects/zfsd/head/tests/sys/cddl/zfs/tests/zfsd/zfsd_replace_003_pos.ksh
==============================================================================
--- projects/zfsd/head/tests/sys/cddl/zfs/tests/zfsd/zfsd_replace_003_pos.ksh	Wed Feb 14 23:52:39 2018	(r329284)
+++ projects/zfsd/head/tests/sys/cddl/zfs/tests/zfsd/zfsd_replace_003_pos.ksh	Wed Feb 14 23:58:40 2018	(r329285)
@@ -107,6 +107,10 @@ for type in "raidz2" "mirror"; do
 		log_fail "Pool $TESTPOOL not listed as DEGRADED"
 	fi
 
+	# Do some I/O to ensure that the old vdevs will be out of date
+	log_must $DD if=/dev/random of=/$TESTPOOL/randfile bs=1m count=1
+	log_must $SYNC
+
 	# Recreate the vdevs in the opposite order
 	typeset MD0=`$MDCONFIG -a -t vnode -f ${FILE1}`
 	[ $? -eq 0 ] || atf_fail "Failed to create md device"