mirror of
https://github.com/linux-apfs/apfstests.git
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Dave Chinner
1ff4192932
Fully scripted conversion, see script in initial SPDX license commit message. Signed-off-by: Dave Chinner <dchinner@redhat.com>
96 lines
2.9 KiB
Bash
Executable File
96 lines
2.9 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2015 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test No. btrfs/109
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#
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# Test that a send operation works correctly with reflinked files (cloned
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# extents which multiple files point to) that have compressed extents.
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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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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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rm -fr $send_files_dir
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/reflink
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# real QA test starts here
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_supported_fs btrfs
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_supported_os Linux
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_require_scratch
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_require_cp_reflink
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send_files_dir=$TEST_DIR/btrfs-test-$seq
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rm -f $seqres.full
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rm -fr $send_files_dir
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mkdir $send_files_dir
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount "-o compress"
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# Create our file with an extent of 100K starting at file offset 0K.
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$XFS_IO_PROG -f -c "pwrite -S 0xaa 0K 100K" \
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-c "fsync" \
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$SCRATCH_MNT/foo | _filter_xfs_io
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# Rewrite part of the previous extent (its first 40K) and write a new 100K
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# extent starting at file offset 100K.
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$XFS_IO_PROG -c "pwrite -S 0xbb 0K 40K" \
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-c "pwrite -S 0xcc 100K 100K" \
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$SCRATCH_MNT/foo | _filter_xfs_io
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# Our file foo now has 3 file extent items in its metadata:
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#
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# 1) One covering the file range 0 to 40K;
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# 2) One covering the file range 40K to 100K, which points to the first extent
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# we wrote to the file and has a data offset field with value 40K (our file
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# no longer uses the first 40K of data from that extent);
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# 3) One covering the file range 100K to 200K.
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# Now clone our file foo into file bar.
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cp --reflink=always $SCRATCH_MNT/foo $SCRATCH_MNT/bar
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# Create our snapshot for the send operation.
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_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/snap
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echo "File digests in the original filesystem:"
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md5sum $SCRATCH_MNT/snap/foo | _filter_scratch
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md5sum $SCRATCH_MNT/snap/bar | _filter_scratch
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_run_btrfs_util_prog send -f $send_files_dir/1.snap $SCRATCH_MNT/snap
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# Now recreate the filesystem by receiving the send stream and verify we get
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# the same file contents that the original filesystem had.
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# Btrfs send used to issue a clone operation from foo's range [80K, 140K[ to
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# bar's range [40K, 100K[ when cloning the extent pointed to by foo's second
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# file extent item, this was incorrect because of bad accounting of the file
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# extent item's data offset field. The correct range to clone from should have
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# been [40K, 100K[.
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_scratch_unmount
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount "-o compress"
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_run_btrfs_util_prog receive -f $send_files_dir/1.snap $SCRATCH_MNT
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echo "File digests in the new filesystem:"
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# Must match the digests we got in the original filesystem.
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md5sum $SCRATCH_MNT/snap/foo | _filter_scratch
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md5sum $SCRATCH_MNT/snap/bar | _filter_scratch
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status=0
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exit
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