b=18233 fix read+truncate livelock

[fs/lustre-release.git] / lustre / tests / sanity.sh

diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index ae7e8e9..18ee710 100755 (executable)
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -7706,6 +7706,23 @@ test_217() { # bug 22430
 }
 run_test 217 "check lctl ping for hostnames with hiphen ('-')"
 
+test_218() {
+       # do directio so as not to populate the page cache
+       log "creating a 10 Mb file"
+       multiop $DIR/$tfile oO_CREAT:O_DIRECT:O_RDWR:w$((10*1048576))c || error "multiop failed while creating a file"
+       log "starting reads"
+       dd if=$DIR/$tfile of=/dev/null bs=4096 &
+       log "truncating the file"
+       multiop $DIR/$tfile oO_TRUNC:c || error "multiop failed while truncating the file"
+       log "killing dd"
+       kill %+ || true # reads might have finished
+       echo "wait until dd is finished"
+       wait
+       log "removing the temporary file"
+       rm -rf $DIR/$tfile || error "tmp file removal failed"
+}
+run_test 218 "parallel read and truncate should not deadlock ======================="
+
 #
 # tests that do cleanup/setup should be run at the end
 #