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btrfs-progs: tests: add test for receiving clone from duplicate subvolume

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This test case is the reproducer for the previous fix.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Omar Sandoval 2020-03-11 01:17:11 -07:00 committed by David Sterba
parent 018306809b
commit 25e3e5cb12
1 changed files with 34 additions and 0 deletions
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34
tests/misc-tests/039-receive-clone-from-current-subvolume/test.sh Executable file
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#!/bin/bash
# Test that when receiving a subvolume whose received UUID already exists in
# the filesystem, we clone from the correct source (the subvolume that we are
# receiving, not the existing subvolume). This is a regression test for
# "btrfs-progs: receive: don't lookup clone root for received subvolume".
source "$TEST_TOP/common"
check_prereq btrfs
check_prereq mkfs.btrfs
setup_root_helper
rm -f disk
run_check truncate -s 1G disk
chmod a+w disk
run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f disk
run_check $SUDO_HELPER mount -o loop disk "$TEST_MNT"
run_check $SUDO_HELPER "$TOP/btrfs" subvolume create "$TEST_MNT/subvol"
run_check $SUDO_HELPER dd if=/dev/urandom of="$TEST_MNT/subvol/foo" \
bs=1M count=1 status=none
run_check $SUDO_HELPER cp --reflink "$TEST_MNT/subvol/foo" "$TEST_MNT/subvol/bar"
run_check $SUDO_HELPER mkdir "$TEST_MNT/subvol/dir"
run_check $SUDO_HELPER mv "$TEST_MNT/subvol/foo" "$TEST_MNT/subvol/dir"
run_check $SUDO_HELPER "$TOP/btrfs" property set "$TEST_MNT/subvol" ro true
run_check $SUDO_HELPER "$TOP/btrfs" send -f send.data "$TEST_MNT/subvol"
run_check $SUDO_HELPER mkdir "$TEST_MNT/first" "$TEST_MNT/second"
run_check $SUDO_HELPER "$TOP/btrfs" receive -f send.data "$TEST_MNT/first"
run_check $SUDO_HELPER "$TOP/btrfs" receive -f send.data "$TEST_MNT/second"
run_check $SUDO_HELPER umount "$TEST_MNT"
rm -f disk send.data