mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Omar Sandoval
70c4067285
The swap file must be set nocow before it is written to, otherwise it is
ignored and Btrfs refuses to activate it as swap.
Fixes: 25ce974006 ("generic: test swapfile creation, activation, and deactivation")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
80 lines
1.9 KiB
Bash
Executable File
80 lines
1.9 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2018 Oracle. All Rights Reserved.
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#
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# FS QA Test No. 496
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#
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# Test various swapfile activation oddities on filesystems that support
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# fallocated swapfiles.
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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swapoff $swapfile 2> /dev/null
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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_supported_fs generic
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_supported_os Linux
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_require_scratch_swapfile
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_require_test_program mkswap
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_require_test_program swapon
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_require_xfs_io_command "falloc"
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rm -f $seqres.full
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount >>$seqres.full 2>&1
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swapfile=$SCRATCH_MNT/swap
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len=$((2 * 1048576))
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page_size=$(get_page_size)
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swapfile_cycle() {
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local swapfile="$1"
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"$here/src/mkswap" $swapfile >> $seqres.full
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"$here/src/swapon" $swapfile 2>&1 | _filter_scratch
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swapoff $swapfile 2>> $seqres.full
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rm -f $swapfile
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}
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# Create a fallocated swap file
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echo "fallocate swap" | tee -a $seqres.full
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touch $swapfile
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# Swap files must be nocow on Btrfs.
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$CHATTR_PROG +C $swapfile >> $seqres.full 2>&1
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$XFS_IO_PROG -f -c "falloc 0 $len" $swapfile >> $seqres.full
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"$here/src/mkswap" $swapfile
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"$here/src/swapon" $swapfile >> $seqres.full 2>&1 || \
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_notrun "fallocated swap not supported here"
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swapoff $swapfile
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# Create a fallocated swap file and touch every other $PAGE_SIZE to create
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# a mess of written/unwritten extent records
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echo "mixed swap" | tee -a $seqres.full
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$XFS_IO_PROG -f -c "falloc 0 $len" $swapfile >> $seqres.full
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seq $page_size $((page_size * 2)) $len | while read offset; do
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_pwrite_byte 0x58 $offset 1 $swapfile >> $seqres.full
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done
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swapfile_cycle $swapfile
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status=0
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exit
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