cleanup_statahead $clients $mntpt_root $num_mntpts
}
+cleanup_rr_alloc () {
+ trap 0
+ local clients="$1"
+ local mntpt_root="$2"
+ local rr_alloc_MNTPTS="$3"
+ local mntpt_dir=$(dirname ${mntpt_root})
+
+ for i in $(seq 0 $((rr_alloc_MNTPTS - 1))); do
+ zconf_umount_clients $clients ${mntpt_root}$i ||
+ error_exit "Failed to umount lustre on ${mntpt_root}$i"
+ done
+ do_nodes $clients "rm -rf $mntpt_dir"
+}
+
+run_rr_alloc() {
+ remote_mds_nodsh && skip "remote MDS with nodsh" && return
+ echo "===Test gives more reproduction percentage if number of "\
+ "client and ost are more. Test with 44 or more clients "\
+ "and 73 or more OSTs gives 100% reproduction rate=="
+
+ RR_ALLOC=${RR_ALLOC:-$(which rr_alloc 2> /dev/null || true)}
+ [ x$RR_ALLOC = x ] && { skip_env "rr_alloc not found" && return; }
+ declare -a diff_max_min_arr
+ # foeo = file on each ost. calc = calculated.
+ local ost_idx
+ local foeo_calc
+ local qos_prec_objs="${TMP}/qos_and_precreated_objects"
+ local rr_alloc_NFILES=${rr_alloc_NFILES:-555}
+ local rr_alloc_MNTPTS=${rr_alloc_MNTPTS:-11}
+ local total_MNTPTS=$((rr_alloc_MNTPTS * num_clients))
+ local mntpt_root="${TMP}/rr_alloc_mntpt/lustre"
+ if [ $MDSCOUNT -lt 2 ]; then
+ [ -e $DIR/$tdir ] || mkdir -p $DIR/$tdir
+ else
+ [ -e $DIR/$tdir ] || $LFS mkdir -i 0 $DIR/$tdir
+ fi
+ chmod 0777 $DIR/$tdir
+ $SETSTRIPE -c 1 /$DIR/$tdir
+
+ trap "cleanup_rr_alloc $clients $mntpt_root $rr_alloc_MNTPTS" EXIT ERR
+ for i in $(seq 0 $((rr_alloc_MNTPTS - 1))); do
+ zconf_mount_clients $clients ${mntpt_root}$i $MOUNT_OPTS ||
+ error_exit "Failed to mount lustre on ${mntpt_root}$i $clients"
+ done
+
+ local cmd="$RR_ALLOC $mntpt_root/$tdir/ash $rr_alloc_NFILES \
+ $num_clients"
+
+ # Save mdt values, set threshold to 100% i.e always Round Robin,
+ # restore the saved values again after creating files...
+ save_lustre_params mds1 \
+ "lov.lustre-MDT0000*.qos_threshold_rr" > $qos_prec_objs
+ save_lustre_params mds1 \
+ "osp.lustre-OST*-osc-MDT0000.create_count" >> $qos_prec_objs
+
+ local old_create_count=$(grep -e "create_count" $qos_prec_objs |
+ cut -d'=' -f 2 | sort -nr | head -n1)
+
+ # Make sure that every osp has enough precreated objects for the file
+ # creation app
+
+ # create_count is always set to the power of 2 only, so if the files
+ # per OST are not multiple of that then it will be set to nearest
+ # lower power of 2. So set 'create_count' to the upper power of 2.
+
+ foeo_calc=$((rr_alloc_NFILES * total_MNTPTS / OSTCOUNT))
+ local create_count=$((2 * foeo_calc))
+ do_facet mds1 "$LCTL set_param -n \
+ lov.lustre-MDT0000*.qos_threshold_rr 100 \
+ osp.lustre-OST*-osc-MDT0000.create_count $create_count" ||
+ error "failed while setting qos_threshold_rr & creat_count"
+
+ # Create few temporary files in order to increase the precreated objects
+ # to a desired value, before starting 'rr_alloc' app. Due to default
+ # value 32 of precreation count (OST_MIN_PRECREATE=32), precreated
+ # objects available are 32 initially, these gets exhausted very soon,
+ # which causes skip of some osps when very large number of files
+ # is created per OSTs.
+ createmany -o $DIR/$tdir/foo- $(((old_create_count + 1) * OSTCOUNT)) \
+ > /dev/null
+ rm -f /$DIR/$tdir/foo*
+
+ # Check for enough precreated objects... We should not
+ # fail here because code(osp_precreate.c) also takes care of it.
+ # So we have good chances of passing test even if this check fails.
+ local mdt_idx=0
+ for ost_idx in $(seq 0 $((OSTCOUNT - 1))); do
+ [[ $(precreated_ost_obj_count $mdt_idx $ost_idx) -ge \
+ $foeo_calc ]] || echo "Warning: test may fail because" \
+ "of lack of precreated objects on OST${ost_idx}"
+ done
+
+ if [[ $total_MNTPTS -ne 0 ]]; then
+ # Now start the actual file creation app.
+ mpi_run "-np $total_MNTPTS" $cmd || return
+ else
+ error "No mount point"
+ fi
+
+ restore_lustre_params < $qos_prec_objs
+ rm -f $qos_prec_objs
+
+ diff_max_min_arr=($($GETSTRIPE -r $DIR/$tdir/ |
+ grep "lmm_stripe_offset:" | awk '{print $2}' | sort -n |
+ uniq -c | awk 'NR==1 {min=max=$1} \
+ { $1<min ? min=$1 : min; $1>max ? max=$1 : max} \
+ END {print max-min, max, min}'))
+
+ rm -rf $DIR/$tdir
+
+ # In-case of fairly large number of file creation using RR (round-robin)
+ # there can be two cases in which deviation will occur than the regular
+ # RR algo behaviour-
+ # 1- When rr_alloc does not start right with 'lqr_start_count' reseeded,
+ # 2- When rr_alloc does not finish with 'lqr_start_count == 0'.
+ # So the difference of files b/w any 2 OST should not be more than 2.
+ [[ ${diff_max_min_arr[0]} -le 2 ]] ||
+ error "Uneven distribution detected: difference between" \
+ "maximum files per OST (${diff_max_min_arr[1]}) and" \
+ "minimum files per OST (${diff_max_min_arr[2]}) must not be" \
+ "greater than 2"
+}
+
run_fs_test() {
# fs_test.x is the default name for exe
FS_TEST=${FS_TEST:=$(which fs_test.x 2> /dev/null || true)}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff