[Bug debuginfod/28577] Make run-...-fd-prefetch-caches.sh test something

[Mark Wielaard]

Hi,

On Fri, 2022-06-03 at 17:02 +0200, Mark Wielaard wrote:
> On Fri, 2022-06-03 at 10:51 -0400, Noah Sanci wrote:
> > Nothing immediately jumps out, would you mind sending the entire
> > log?
> 
> Attached.

And Noah figured it out. The machine where it failed has /tmp 92% full
and the default mintmp is 25%. Which triggers an fdcache emergency
flush. So with this it PASSes everywhere:

diff --git a/tests/run-debuginfod-fd-prefetch-caches.sh b/tests/run-debuginfod-fd-prefetch-caches.sh
index 8778d3a2..a538cd48 100755
--- a/tests/run-debuginfod-fd-prefetch-caches.sh
+++ b/tests/run-debuginfod-fd-prefetch-caches.sh
@@ -50,10 +50,12 @@ export DEBUGINFOD_CACHE_PATH=${PWD}/.client_cache
 rm -rf $DEBUGINFOD_CACHE_PATH
 rm -rf $DB
 # Testing prefetch fd maximum (Set mb maximums to be beyond consideration)
+# Set --fdcache-mintmp=0 so we don't accidentially trigger an fdcache
+# emergency flush for filling tmpdir
 env LD_LIBRARY_PATH=$ldpath DEBUGINFOD_URLS= ${abs_builddir}/../debuginfod/debuginfod $VERBOSE -p $PORT1 -d $DB \
     --fdcache-fds=$FDCACHE_FDS --fdcache-prefetch-fds=$PREFETCH_FDS  -vvvvv -g 0 -t 0 \
     -Z .tar.bz2=bzcat Z  --fdcache-mbs=100  --fdcache-prefetch-mbs=100 \
-    --fdcache-prefetch=$PREFETCH > vlog$PORT1 2>&1 &
+    --fdcache-mintmp=0 --fdcache-prefetch=$PREFETCH > vlog$PORT1 2>&1 &
 PID1=$!
 tempfiles vlog$PORT1
 errfiles vlog$PORT1

Pushed with that change.

Thanks,

Mark