mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Dave Chinner
e714acc0ef
One of the big cpu time consumers when running xfsqa on UML is forking of new processes. when looping lots of times, using 'expr' to calculate the loop counter increment means we fork at least once every loop. using shell builtins means that we don't fork and many tests run substantially faster. Some tests are even runnable with this modification. e.g. 110 went from taking 4500s to run down to 9s with the loop iterators changed to avoid forking. Signed-off-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
100 lines
2.0 KiB
Bash
Executable File
100 lines
2.0 KiB
Bash
Executable File
#! /bin/sh
|
|
# FS QA Test No. 109
|
|
#
|
|
# ENOSPC deadlock case from Asano Masahiro.
|
|
#
|
|
#-----------------------------------------------------------------------
|
|
# Copyright (c) 2005 Silicon Graphics, Inc. All Rights Reserved.
|
|
#-----------------------------------------------------------------------
|
|
#
|
|
# creator
|
|
owner=nathans@sgi.com
|
|
|
|
seq=`basename $0`
|
|
echo "QA output created by $seq"
|
|
|
|
here=`pwd`
|
|
tmp=/tmp/$$
|
|
status=1 # failure is the default!
|
|
trap "rm -f $tmp.*; exit \$status" 0 1 2 3 15
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common.rc
|
|
. ./common.filter
|
|
|
|
# real QA test starts here
|
|
_supported_fs xfs
|
|
_supported_os Linux XFS
|
|
_require_scratch
|
|
|
|
populate()
|
|
{
|
|
# "faststart" lets us effectively skip (re-)population
|
|
[ "X$faststart" != "X" ] && rm -f $SCRATCH_MNT/F*
|
|
|
|
# create many small files using most available space
|
|
echo "creating small files..."
|
|
i=0
|
|
while [ $i -le $files -a "X$faststart" = "X" ]; do
|
|
file=$SCRATCH_MNT/f$i
|
|
xfs_io -f -d -c 'pwrite -b 64k 0 64k' $file >/dev/null
|
|
let i=$i+1
|
|
done
|
|
|
|
# remove every second file, freeing up lots of space
|
|
echo "removing small files..."
|
|
i=1
|
|
while [ $i -le $files -a "X$faststart" = "X" ]; do
|
|
rm $SCRATCH_MNT/f$i
|
|
let i=$i+2
|
|
done
|
|
|
|
echo "flushing changes via umount/mount."
|
|
umount $SCRATCH_DEV
|
|
_scratch_mount
|
|
}
|
|
|
|
allocate()
|
|
{
|
|
# now try to hit the deadlock
|
|
echo "starting parallel allocators..."
|
|
i=0
|
|
while [ $i -le 10 ]; do
|
|
file=$SCRATCH_MNT/F$i
|
|
{
|
|
j=0
|
|
while [ $j -lt 100 ]; do
|
|
xfs_io -f -c 'pwrite -b 64k 0 16m' $file \
|
|
>/dev/null 2>&1
|
|
rm $file
|
|
let j=$j+1
|
|
done
|
|
} &
|
|
let i=$i+1
|
|
done
|
|
|
|
wait
|
|
echo "all done!"
|
|
}
|
|
|
|
# real QA test starts here
|
|
umount $SCRATCH_DEV 2>/dev/null
|
|
_scratch_mount
|
|
|
|
# see if faststart is possible (and requested)
|
|
files=2000
|
|
faststart=""
|
|
if [ -n "$FASTSTART" -a -f $SCRATCH_MNT/f0 ]; then
|
|
faststart="-N" # causes us to skip the mkfs step
|
|
fi
|
|
umount $SCRATCH_DEV
|
|
|
|
_scratch_mkfs_xfs -dsize=160m,agcount=4 $faststart | _filter_mkfs 2>$tmp.mkfs
|
|
cat $tmp.mkfs >>$seq.full
|
|
_scratch_mount
|
|
|
|
populate
|
|
allocate
|
|
status=0
|
|
exit
|