mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-17 10:01:01 +03:00
ecaccf764a
Sometimes, for reasons I haven't looked into yet, VDEV_UPATH gets set to /dev/(null), breaking all these scripts. It'd be nice to have a fallback case to avoid total failure. Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rich Ercolani <rincebrain@gmail.com> Closes #13436
87 lines
2.1 KiB
Bash
Executable File
87 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# Display most relevant iostat bandwidth/latency numbers. The output is
|
|
# dependent on the name of the script/symlink used to call it.
|
|
#
|
|
|
|
helpstr="
|
|
iostat: Show iostat values since boot (summary page).
|
|
iostat-1s: Do a single 1-second iostat sample and show values.
|
|
iostat-10s: Do a single 10-second iostat sample and show values."
|
|
|
|
script="${0##*/}"
|
|
if [ "$1" = "-h" ] ; then
|
|
echo "$helpstr" | grep "$script:" | tr -s '\t' | cut -f 2-
|
|
exit
|
|
fi
|
|
|
|
# Sometimes, UPATH ends up /dev/(null).
|
|
# That should be corrected, but for now...
|
|
# shellcheck disable=SC2154
|
|
if [ ! -b "$VDEV_UPATH" ]; then
|
|
somepath="${VDEV_PATH}"
|
|
else
|
|
somepath="${VDEV_UPATH}"
|
|
fi
|
|
|
|
if [ "$script" = "iostat-1s" ] ; then
|
|
# Do a single one-second sample
|
|
interval=1
|
|
# Don't show summary stats
|
|
brief="yes"
|
|
elif [ "$script" = "iostat-10s" ] ; then
|
|
# Do a single ten-second sample
|
|
interval=10
|
|
# Don't show summary stats
|
|
brief="yes"
|
|
fi
|
|
|
|
if [ -f "$somepath" ] ; then
|
|
# We're a file-based vdev, iostat doesn't work on us. Do nothing.
|
|
exit
|
|
fi
|
|
|
|
if [ "$(uname)" = "FreeBSD" ]; then
|
|
out=$(iostat -dKx \
|
|
${interval:+"-w $interval"} \
|
|
${interval:+"-c 1"} \
|
|
"$somepath" | tail -n 2)
|
|
else
|
|
out=$(iostat -kx \
|
|
${brief:+"-y"} \
|
|
${interval:+"$interval"} \
|
|
${interval:+"1"} \
|
|
"$somepath" | grep -v '^$' | tail -n 2)
|
|
fi
|
|
|
|
|
|
# Sample output (we want the last two lines):
|
|
#
|
|
# Linux 2.6.32-642.13.1.el6.x86_64 (centos68) 03/09/2017 _x86_64_ (6 CPU)
|
|
#
|
|
# avg-cpu: %user %nice %system %iowait %steal %idle
|
|
# 0.00 0.00 0.00 0.00 0.00 100.00
|
|
#
|
|
# Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
|
|
# sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
|
|
#
|
|
|
|
# Get the column names
|
|
cols=$(echo "$out" | head -n 1)
|
|
|
|
# Get the values and tab separate them to make them cut-able.
|
|
vals=$(echo "$out" | tail -n 1 | tr -s '[:space:]' '\t')
|
|
|
|
i=0
|
|
for col in $cols ; do
|
|
i=$((i+1))
|
|
# Skip the first column since it's just the device name
|
|
if [ "$i" -eq 1 ]; then
|
|
continue
|
|
fi
|
|
|
|
# Get i'th value
|
|
val=$(echo "$vals" | cut -f "$i")
|
|
echo "$col=$val"
|
|
done
|