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3067a9293a
Run "make update-copyright" and then... * gnulib: Update to latest with copyright year adjusted. * tests/init.sh: Sync with gnulib to pick up copyright year. * bootstrap: Likewise. * tests/sample-test: Adjust to use the single most recent year.
41 lines
1.5 KiB
Bash
Executable File
41 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
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# ensure that a sparse file is copied efficiently, by default
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# Copyright (C) 2021-2022 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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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ cp
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# Create a large-but-sparse file.
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timeout 10 truncate -s1T f ||
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skip_ "unable to create a 1 TiB sparse file"
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# Note zfs with zfs_dmu_offset_next_sync=0 (the default)
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# will generally skip here, due to needing about 5 seconds
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# between the creation of the file and the use of SEEK_DATA,
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# for it to determine it's an empty file (return ENXIO).
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seek_data_capable_ f ||
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skip_ "this file system lacks appropriate SEEK_DATA support"
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# Nothing can read that many bytes in so little time.
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timeout 10 cp --reflink=never f f2 || fail=1
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# Ensure that the sparse file copied through SEEK_DATA has the same size
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# in bytes as the original.
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test "$(stat --printf %s f)" = "$(stat --printf %s f2)" || fail=1
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Exit $fail
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