forked from Mirrors/btrfs-progs
57 lines
1.7 KiB
Bash
57 lines
1.7 KiB
Bash
#!/bin/bash
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# Test zstd compression support on a prebuilt btrfs image
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source "$TEST_TOP/common"
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check_prereq btrfs
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check_global_prereq md5sum
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# Extract the test image
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image=$(extract_image compress.raw.xz)
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check_dump_tree() {
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local image=$1
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local string=$2
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run_check_stdout "$TOP/btrfs" inspect-internal dump-tree "$image" \
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| grep -q "$string" \
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|| _fail "btrfs inspect-internal dump-tree didn't print $string"
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}
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# Check that there are blocks of each compression type
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check_dump_tree "$image" "extent compression 1 (zlib)"
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check_dump_tree "$image" "extent compression 2 (lzo)"
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check_dump_tree "$image" "extent compression 3 (zstd)"
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# Check that the filesystem has incompat COMPRESS_ZSTD
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run_check_stdout "$TOP/btrfs" inspect-internal dump-super -f "$image" \
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| grep -q COMPRESS_ZSTD \
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|| _fail "btrfs inspect-internal dump-super no incompat COMPRESS_ZSTD"
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# Create a temporary directory and restore the filesystem
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restore_tmp=$(mktemp --tmpdir -d btrfs-progs-022-zstd-compression.XXXXXXXXXX)
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run_check "$TOP/btrfs" restore "$image" "$restore_tmp"
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# Expect 3 files
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num_files=$(ls -1 "$restore_tmp" | wc -l)
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[ "$num_files" == 3 ] || _fail "number of files does not match"
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check_md5() {
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local file="$1"
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local expect_md5="$2"
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md5=$(run_check_stdout md5sum "$file" | cut -d ' ' -f 1)
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[ "$md5" == "$expect_md5" ] \
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|| _fail "$file digest $md5 does not match $expect_md5"
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}
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# Each should be 200K of zeros
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expect_md5=$(dd if=/dev/zero bs=1K count=200 status=none | md5sum | cut -d ' ' -f 1)
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check_md5 "$restore_tmp/zlib" "$expect_md5"
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check_md5 "$restore_tmp/lzo" "$expect_md5"
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check_md5 "$restore_tmp/zstd" "$expect_md5"
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# Clean up
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rm -r -- "$restore_tmp"
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rm -- "$image"
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