#!/bin/sh
# PCP QA Test No. 1126
# Exercise the BCC PMDA ext4dist module - install, remove and values.
#
# Copyright (c) 2018 Andreas Gerstmayr.
#

seq=`basename $0`
echo "QA output created by $seq"

. ./common.bcc

_pmdabcc_check
which mkfs.ext4 >/dev/null 2>&1 || _notrun "mkfs.ext4 not installed"

write_size=`expr 20 \* 1024 \* 1024` # number of bytes to write into testfile
out_file=$tmp.mount.ext4/tmpfile

status=1       # failure is the default!
signal=$PCP_BINADM_DIR/pmsignal
$sudo rm -rf $tmp.* $seq.full

_prepare_pmda bcc
trap "_unmount_filesystem ext4; _pmdabcc_cleanup; exit \$status" 0 1 2 3 15
_stop_auto_restart pmcd

# mount ext4 before installing the PMDA, as mounting
# ext4 may trigger loading the ext4 kernel module
_mount_filesystem ext4

# real QA test starts here
cat <<EOF | _pmdabcc_install
# Installed by PCP QA test $seq on `date`
[pmda]
modules = ext4dist
prefix = bcc.
[ext4dist]
module = fs.ext4dist
cluster = 5
EOF

_pmdabcc_wait_for_metric

# Generate system activity for the BCC ext4dist module
dd if=/dev/zero of=${out_file} bs=${write_size} count=1 conv=fsync 2>/dev/null
dd if=${out_file} of=/dev/null bs=${write_size} count=1 2>/dev/null

echo "=== report metric values for open ==="
pminfo -dfmtT bcc.fs.ext4.latency.open 2>&1 | tee -a $here/$seq.full \
| _instances_filter_nonzero

echo "=== report metric values for read ==="
pminfo -dfmtT bcc.fs.ext4.latency.read 2>&1 | tee -a $here/$seq.full \
| _instances_filter_nonzero

echo "=== report metric values for write ==="
pminfo -dfmtT bcc.fs.ext4.latency.write 2>&1 | tee -a $here/$seq.full \
| _instances_filter_nonzero

echo "=== report metric values for fsync ==="
pminfo -dfmtT bcc.fs.ext4.latency.fsync 2>&1 | tee -a $here/$seq.full \
| _instances_filter_nonzero

_pmdabcc_remove

status=0
exit
