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test: btrfs-related udev tests
This commit is contained in:
Frantisek Sumsal
parent
677acd2101
commit
b1471e559e
@ -5,9 +5,7 @@
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# * iSCSI
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# * LVM over iSCSI (?)
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# * SW raid (mdadm)
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# * LUKS -> MD (mdadm) -> LVM
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# * BTRFS
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# * MD BTRFS
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# * MD (mdadm) -> DM-CRYPT -> LVM
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set -e
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TEST_DESCRIPTION="systemd-udev storage tests"
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@ -37,7 +35,7 @@ _host_has_feature() {(
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command -v lvm
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;;
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btrfs)
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modprobe -nv btrfs && command -v mkfs.btrfs
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modprobe -nv btrfs && command -v mkfs.btrfs && command -v btrfs
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;;
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*)
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echo >&2 "ERROR: Unknown feature '$1'"
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@ -51,15 +49,19 @@ test_append_files() {(
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local feature
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# An associative array of requested (but optional) features and their
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# respective "handlers" from test/test-functions
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#
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# Note: we install cryptsetup unconditionally, hence it's not explicitly
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# checked for here
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local -A features=(
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[multipath]=install_multipath
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[btrfs]=install_btrfs
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[lvm]=install_lvm
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[multipath]=install_multipath
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)
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instmods "=block" "=md" "=nvme" "=scsi"
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install_dmevent
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generate_module_dependencies
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image_install lsblk wc
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image_install lsblk wc wipefs
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# Install the optional features if the host has the respective tooling
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for feature in "${!features[@]}"; do
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@ -74,6 +76,13 @@ test_append_files() {(
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done
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)}
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_image_cleanup() {
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mount_initdir
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# Clean up certain "problematic" files which may be left over by failing tests
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: >"${initdir:?}/etc/fstab"
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: >"${initdir:?}/etc/crypttab"
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}
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test_run_one() {
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local test_id="${1:?}"
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@ -100,6 +109,7 @@ test_run() {
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# Execute each currently defined function starting with "testcase_"
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for testcase in "${TESTCASES[@]}"; do
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_image_cleanup
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echo "------ $testcase: BEGIN ------"
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{ "$testcase" "$test_id"; ec=$?; } || :
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case $ec in
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@ -311,6 +321,34 @@ testcase_lvm_basic() {
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rm -f "${TESTDIR:?}"/lvmbasic*.img
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}
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testcase_btrfs_basic() {
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if ! _host_has_feature "btrfs"; then
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echo "Missing btrfs tools/modules, skipping the test..."
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return 77
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fi
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local qemu_opts=("-device ahci,id=ahci0")
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local diskpath i size
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for i in {0..3}; do
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diskpath="${TESTDIR:?}/btrfsbasic${i}.img"
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# Make the first disk larger for multi-partition tests
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[[ $i -eq 0 ]] && size=350 || size=128
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dd if=/dev/zero of="$diskpath" bs=1M count="$size"
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qemu_opts+=(
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"-device ide-hd,bus=ahci0.$i,drive=drive$i,model=foobar,serial=deadbeefbtrfs$i"
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"-drive format=raw,cache=unsafe,file=$diskpath,if=none,id=drive$i"
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)
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done
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KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
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QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
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test_run_one "${1:?}"
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rm -f "${TESTDIR:?}"/btrfsbasic*.img
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}
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# Allow overriding which tests should be run from the "outside", useful for manual
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# testing (make -C test/... TESTCASES="testcase1 testcase2")
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if [[ -v "TESTCASES" && -n "$TESTCASES" ]]; then
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@ -277,6 +277,126 @@ testcase_lvm_basic() {
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done
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}
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testcase_btrfs_basic() {
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local dev_stub i label mpoint uuid
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local devices=(
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/dev/disk/by-id/ata-foobar_deadbeefbtrfs{0..3}
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)
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ls -l "${devices[@]}"
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echo "Single device: default settings"
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uuid="deadbeef-dead-dead-beef-000000000000"
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label="btrfs_root"
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mkfs.btrfs -L "$label" -U "$uuid" "${devices[0]}"
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udevadm settle
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btrfs filesystem show
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test -e "/dev/disk/by-uuid/$uuid"
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test -e "/dev/disk/by-label/$label"
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helper_check_device_symlinks
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echo "Multiple devices: using partitions, data: single, metadata: raid1"
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uuid="deadbeef-dead-dead-beef-000000000001"
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label="btrfs_mpart"
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sfdisk --wipe=always "${devices[0]}" <<EOF
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label: gpt
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name="diskpart1", size=85M
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name="diskpart2", size=85M
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name="diskpart3", size=85M
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name="diskpart4", size=85M
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EOF
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udevadm settle
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mkfs.btrfs -d single -m raid1 -L "$label" -U "$uuid" /dev/disk/by-partlabel/diskpart{1..4}
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udevadm settle
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btrfs filesystem show
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test -e "/dev/disk/by-uuid/$uuid"
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test -e "/dev/disk/by-label/$label"
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helper_check_device_symlinks
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wipefs -a -f "${devices[0]}"
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echo "Multiple devices: using disks, data: raid10, metadata: raid10, mixed mode"
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uuid="deadbeef-dead-dead-beef-000000000002"
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label="btrfs_mdisk"
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mkfs.btrfs -M -d raid10 -m raid10 -L "$label" -U "$uuid" "${devices[@]}"
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udevadm settle
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btrfs filesystem show
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test -e "/dev/disk/by-uuid/$uuid"
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test -e "/dev/disk/by-label/$label"
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helper_check_device_symlinks
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echo "Multiple devices: using LUKS encrypted disks, data: raid1, metadata: raid1, mixed mode"
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uuid="deadbeef-dead-dead-beef-000000000003"
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label="btrfs_mencdisk"
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mpoint="/btrfs_enc$RANDOM"
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mkdir "$mpoint"
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# Create a key-file
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dd if=/dev/urandom of=/etc/btrfs_keyfile bs=64 count=1 iflag=fullblock
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chmod 0600 /etc/btrfs_keyfile
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# Encrypt each device and add it to /etc/crypttab, so it can be mounted
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# automagically later
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: >/etc/crypttab
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for ((i = 0; i < ${#devices[@]}; i++)); do
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# Intentionally use weaker cipher-related settings, since we don't care
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# about security here as it's a throwaway LUKS partition
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cryptsetup luksFormat -q \
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--use-urandom --pbkdf pbkdf2 --pbkdf-force-iterations 1000 \
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--uuid "deadbeef-dead-dead-beef-11111111111$i" --label "encdisk$i" "${devices[$i]}" /etc/btrfs_keyfile
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udevadm settle
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test -e "/dev/disk/by-uuid/deadbeef-dead-dead-beef-11111111111$i"
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test -e "/dev/disk/by-label/encdisk$i"
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# Add the device into /etc/crypttab, reload systemd, and then activate
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# the device so we can create a filesystem on it later
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echo "encbtrfs$i UUID=deadbeef-dead-dead-beef-11111111111$i /etc/btrfs_keyfile luks,noearly" >>/etc/crypttab
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systemctl daemon-reload
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systemctl start "systemd-cryptsetup@encbtrfs$i"
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done
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helper_check_device_symlinks
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# Check if we have all necessary DM devices
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ls -l /dev/mapper/encbtrfs{0..3}
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# Create a multi-device btrfs filesystem on the LUKS devices
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mkfs.btrfs -M -d raid1 -m raid1 -L "$label" -U "$uuid" /dev/mapper/encbtrfs{0..3}
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udevadm settle
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btrfs filesystem show
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test -e "/dev/disk/by-uuid/$uuid"
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test -e "/dev/disk/by-label/$label"
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helper_check_device_symlinks
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# Mount it and write some data to it we can compare later
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mount -t btrfs /dev/mapper/encbtrfs0 "$mpoint"
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echo "hello there" >"$mpoint/test"
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# "Deconstruct" the btrfs device and check if we're in a sane state (symlink-wise)
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umount "$mpoint"
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systemctl stop systemd-cryptsetup@encbtrfs{0..3}
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test ! -e "/dev/disk/by-uuid/$uuid"
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helper_check_device_symlinks
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# Add the mount point to /etc/fstab and check if the device can be put together
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# automagically. The source device is the DM name of the first LUKS device
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# (from /etc/crypttab). We have to specify all LUKS devices manually, as
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# registering the necessary devices is usually initrd's job (via btrfs device scan)
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dev_stub="/dev/mapper/encbtrfs"
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echo "/dev/mapper/encbtrfs0 $mpoint btrfs device=${dev_stub}0,device=${dev_stub}1,device=${dev_stub}2,device=${dev_stub}3 0 2" >>/etc/fstab
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# Tell systemd about the new mount
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systemctl daemon-reload
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# Restart cryptsetup.target to trigger autounlock of partitions in /etc/crypttab
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systemctl restart cryptsetup.target
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# Start the corresponding mount unit and check if the btrfs device was reconstructed
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# correctly
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systemctl start "${mpoint##*/}.mount"
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btrfs filesystem show
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test -e "/dev/disk/by-uuid/$uuid"
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test -e "/dev/disk/by-label/$label"
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helper_check_device_symlinks
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grep "hello there" "$mpoint/test"
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# Cleanup
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systemctl stop "${mpoint##*/}.mount"
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systemctl stop systemd-cryptsetup@encbtrfs{0..3}
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sed -i "/${mpoint##*/}/d" /etc/fstab
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: >/etc/crypttab
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rm -fr "$mpoint"
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systemctl daemon-reload
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udevadm settle
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}
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: >/failed
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udevadm settle
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