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5c8c2a5161
Upcomming gnulib changes may disable SEEK_HOLE even if the system supports it, so dynamically check if we've SEEK_HOLE enabled. * init.cfg (seek_data_capable_): SEEK_DATA may be disabled in the build if the system support is deemed insufficient, so also use `cp --debug` to determine if it's enabled. * tests/cp/sparse-2.sh: Adjust to a more general diagnostic. * tests/cp/sparse-extents-2.sh: Likewise. * tests/cp/sparse-extents.sh: Likewise. * tests/cp/sparse-perf.sh: Likewise.
62 lines
2.4 KiB
Bash
Executable File
62 lines
2.4 KiB
Bash
Executable File
#!/bin/sh
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# Exercise a few more corners of the copying code.
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# Copyright (C) 2011-2023 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ cp stat dd
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touch sparse_chk
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seek_data_capable_ sparse_chk \
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|| skip_ "insufficient SEEK_DATA support"
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# Exercise the code that handles a file ending in a hole.
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printf x > k || framework_failure_
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dd bs=1k seek=128 of=k < /dev/null || framework_failure_
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# The first time through the outer loop, the input file, K, ends with a hole.
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# The second time through, we append a byte so that it does not.
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for append in no yes; do
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test $append = yes && printf y >> k
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for i in always never; do
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cp --reflink=never --sparse=$i k k2 || fail=1
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cmp k k2 || fail=1
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done
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done
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# Ensure that --sparse=always can restore holes.
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rm -f k
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# Create a file starting with an "x", followed by 256K-1 0 bytes.
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printf x > k || framework_failure_
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dd bs=1k seek=1 of=k count=255 < /dev/zero || framework_failure_
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# cp should detect the all-zero blocks and convert some of them to holes.
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# How many it detects/converts currently depends on io_blksize.
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# Currently, on my F14/ext4 desktop, this K file starts off with size 256KiB,
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# (note that the K in the preceding test starts off with size 4KiB).
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# cp from coreutils-8.9 with --sparse=always reduces the size to 32KiB.
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cp --reflink=never --sparse=always k k2 || fail=1
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if test $(stat -c %b k2) -ge $(stat -c %b k); then
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# If not sparse, then double check by creating with dd
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# as we're not guaranteed that seek will create a hole.
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# apfs on darwin 19.2.0 for example was seen to not to create holes < 16MiB.
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hole_size=$(stat -c %o k2) || framework_failure_
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dd if=k of=k2.dd bs=$hole_size conv=sparse || framework_failure_
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test $(stat -c %b k2) -eq $(stat -c %b k2.dd) || fail=1
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fi
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Exit $fail
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