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|
#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later
# vi: ts=4 sw=4 tw=0 et:
set -eux
set -o pipefail
# Check if all symlinks under /dev/disk/ are valid
# shellcheck disable=SC2120
helper_check_device_symlinks() {(
set +x
local dev link path paths target
[[ $# -gt 0 ]] && paths=("$@") || paths=("/dev/disk" "/dev/mapper")
# Check if all given paths are valid
for path in "${paths[@]}"; do
if ! test -e "$path"; then
echo >&2 "Path '$path' doesn't exist"
return 1
fi
done
while read -r link; do
target="$(readlink -f "$link")"
# Both checks should do virtually the same thing, but check both to be
# on the safe side
if [[ ! -e "$link" || ! -e "$target" ]]; then
echo >&2 "ERROR: symlink '$link' points to '$target' which doesn't exist"
return 1
fi
# Check if the symlink points to the correct device in /dev
dev="/dev/$(udevadm info -q name "$link")"
if [[ "$target" != "$dev" ]]; then
echo >&2 "ERROR: symlink '$link' points to '$target' but '$dev' was expected"
return 1
fi
done < <(find "${paths[@]}" -type l)
)}
helper_check_udev_watch() {(
set +x
local link target id dev
while read -r link; do
target="$(readlink "$link")"
if [[ ! -L "/run/udev/watch/$target" ]]; then
echo >&2 "ERROR: symlink /run/udev/watch/$target does not exist"
return 1
fi
if [[ "$(readlink "/run/udev/watch/$target")" != "$(basename "$link")" ]]; then
echo >&2 "ERROR: symlink target of /run/udev/watch/$target is inconsistent with $link"
return 1
fi
if [[ "$target" =~ ^[0-9]+$ ]]; then
# $link is ID -> wd
id="$(basename "$link")"
else
# $link is wd -> ID
id="$target"
fi
if [[ "${id:0:1}" == "b" ]]; then
dev="/dev/block/${id:1}"
elif [[ "${id:0:1}" == "c" ]]; then
dev="/dev/char/${id:1}"
else
echo >&2 "ERROR: unexpected device ID '$id'"
return 1
fi
if [[ ! -e "$dev" ]]; then
echo >&2 "ERROR: device '$dev' corresponding to symlink '$link' does not exist"
return 1
fi
done < <(find /run/udev/watch -type l)
)}
check_device_unit() {(
set +x
local log_level link links path syspath unit
log_level="${1?}"
path="${2?}"
unit=$(systemd-escape --path --suffix=device "$path")
syspath=$(systemctl show --value --property SysFSPath "$unit" 2>/dev/null)
if [[ -z "$syspath" ]]; then
[[ "$log_level" == 1 ]] && echo >&2 "ERROR: $unit not found."
return 1
fi
if [[ ! -L "$path" ]]; then
if [[ ! -d "$syspath" ]]; then
[[ "$log_level" == 1 ]] && echo >&2 "ERROR: $unit exists for $syspath but it does not exist."
return 1
fi
return 0
fi
if [[ ! -b "$path" && ! -c "$path" ]]; then
[[ "$log_level" == 1 ]] && echo >&2 "ERROR: invalid file type $path"
return 1
fi
read -r -a links < <(udevadm info -q symlink "$syspath" 2>/dev/null)
for link in "${links[@]}"; do
if [[ "/dev/$link" == "$path" ]]; then # DEVLINKS= given by -q symlink are relative to /dev
return 0
fi
done
read -r -a links < <(udevadm info "$syspath" | sed -ne '/SYSTEMD_ALIAS=/ { s/^E: SYSTEMD_ALIAS=//; p }' 2>/dev/null)
for link in "${links[@]}"; do
if [[ "$link" == "$path" ]]; then # SYSTEMD_ALIAS= are absolute
return 0
fi
done
[[ "$log_level" == 1 ]] && echo >&2 "ERROR: $unit exists for $syspath but it does not have the corresponding DEVLINKS or SYSTEMD_ALIAS."
return 1
)}
check_device_units() {(
set +x
local log_level path paths
log_level="${1?}"
shift
paths=("$@")
for path in "${paths[@]}"; do
if ! check_device_unit "$log_level" "$path"; then
return 1
fi
done
while read -r unit _; do
path=$(systemd-escape --path --unescape "$unit")
if ! check_device_unit "$log_level" "$path"; then
return 1
fi
done < <(systemctl list-units --all --type=device --no-legend dev-* | awk '$1 !~ /dev-tty.+/ { print $1 }' | sed -e 's/\.device$//')
return 0
)}
helper_check_device_units() {(
set +x
local i
for ((i = 0; i < 20; i++)); do
(( i == 0 )) || sleep .5
if check_device_units 0 "$@"; then
return 0
fi
done
check_device_units 1 "$@"
)}
testcase_megasas2_basic() {
lsblk -S
[[ "$(lsblk --scsi --noheadings | wc -l)" -ge 128 ]]
}
testcase_nvme_basic() {
lsblk --noheadings | grep "^nvme"
[[ "$(lsblk --noheadings | grep -c "^nvme")" -ge 28 ]]
}
testcase_virtio_scsi_identically_named_partitions() {
local num
if [[ -n "${ASAN_OPTIONS:-}" ]] || [[ "$(systemd-detect-virt -v)" == "qemu" ]]; then
num=$((4 * 4))
else
num=$((16 * 8))
fi
lsblk --noheadings -a -o NAME,PARTLABEL
[[ "$(lsblk --noheadings -a -o NAME,PARTLABEL | grep -c "Hello world")" -eq "$num" ]]
}
testcase_multipath_basic_failover() {
local dmpath i path wwid
# Configure multipath
cat >/etc/multipath.conf <<\EOF
defaults {
# Use /dev/mapper/$WWN paths instead of /dev/mapper/mpathX
user_friendly_names no
find_multipaths yes
enable_foreign "^$"
}
blacklist_exceptions {
property "(SCSI_IDENT_|ID_WWN)"
}
blacklist {
}
EOF
modprobe -v dm_multipath
systemctl start multipathd.service
systemctl status multipathd.service
multipath -ll
udevadm settle
ls -l /dev/disk/by-id/
for i in {0..15}; do
wwid="deaddeadbeef$(printf "%.4d" "$i")"
path="/dev/disk/by-id/wwn-0x$wwid"
dmpath="$(readlink -f "$path")"
lsblk "$path"
multipath -C "$dmpath"
# We should have 4 active paths for each multipath device
[[ "$(multipath -l "$path" | grep -c running)" -eq 4 ]]
done
# Test failover (with the first multipath device that has a partitioned disk)
echo "${FUNCNAME[0]}: test failover"
local device expected link mpoint part
local -a devices
mpoint="$(mktemp -d /mnt/mpathXXX)"
wwid="deaddeadbeef0000"
path="/dev/disk/by-id/wwn-0x$wwid"
# All following symlinks should exists and should be valid
local -a part_links=(
"/dev/disk/by-id/wwn-0x$wwid-part2"
"/dev/disk/by-partlabel/failover_part"
"/dev/disk/by-partuuid/deadbeef-dead-dead-beef-000000000000"
"/dev/disk/by-label/failover_vol"
"/dev/disk/by-uuid/deadbeef-dead-dead-beef-111111111111"
)
udevadm wait --settle --timeout=30 "${part_links[@]}"
helper_check_device_units "${part_links[@]}"
# Choose a random symlink to the failover data partition each time, for
# a better coverage
part="${part_links[$RANDOM % ${#part_links[@]}]}"
# Get all devices attached to a specific multipath device (in H:C:T:L format)
# and sort them in a random order, so we cut off different paths each time
mapfile -t devices < <(multipath -l "$path" | grep -Eo '[0-9]+:[0-9]+:[0-9]+:[0-9]+' | sort -R)
if [[ "${#devices[@]}" -ne 4 ]]; then
echo "Expected 4 devices attached to WWID=$wwid, got ${#devices[@]} instead"
return 1
fi
# Drop the last path from the array, since we want to leave at least one path active
unset "devices[3]"
# Mount the first multipath partition, write some data we can check later,
# and then disconnect the remaining paths one by one while checking if we
# can still read/write from the mount
mount -t ext4 "$part" "$mpoint"
expected=0
echo -n "$expected" >"$mpoint/test"
# Sanity check we actually wrote what we wanted
[[ "$(<"$mpoint/test")" == "$expected" ]]
for device in "${devices[@]}"; do
echo offline >"/sys/class/scsi_device/$device/device/state"
[[ "$(<"$mpoint/test")" == "$expected" ]]
expected="$((expected + 1))"
echo -n "$expected" >"$mpoint/test"
# Make sure all symlinks are still valid
udevadm wait --settle --timeout=30 "${part_links[@]}"
helper_check_device_units "${part_links[@]}"
done
multipath -l "$path"
# Three paths should be now marked as 'offline' and one as 'running'
[[ "$(multipath -l "$path" | grep -c offline)" -eq 3 ]]
[[ "$(multipath -l "$path" | grep -c running)" -eq 1 ]]
umount "$mpoint"
rm -fr "$mpoint"
}
testcase_simultaneous_events() {
local disk expected i iterations link num_part part partscript rule target timeout
local -a devices symlinks
if [[ -n "${ASAN_OPTIONS:-}" ]] || [[ "$(systemd-detect-virt -v)" == "qemu" ]]; then
num_part=2
iterations=10
timeout=240
else
num_part=10
iterations=100
timeout=30
fi
for disk in {0..9}; do
link="/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_deadbeeftest${disk}"
target="$(readlink -f "$link")"
if [[ ! -b "$target" ]]; then
echo "ERROR: failed to find the test SCSI block device $link"
return 1
fi
devices+=("$target")
done
for ((part = 1; part <= num_part; part++)); do
symlinks+=(
"/dev/disk/by-partlabel/test${part}"
)
done
partscript="$(mktemp)"
cat >"$partscript" <<EOF
$(for ((part = 1; part <= num_part; part++)); do printf 'name="test%d", size=2M\n' "$part"; done)
EOF
rule=/run/udev/rules.d/50-test.rules
mkdir -p "${rule%/*}"
cat >"$rule" <<EOF
SUBSYSTEM=="block", KERNEL=="${devices[4]##*/}*|${devices[5]##*/}*", OPTIONS="link_priority=10"
EOF
udevadm control --reload
# Delete the partitions, immediately recreate them, wait for udev to settle
# down, and then check if we have any dangling symlinks in /dev/disk/. Rinse
# and repeat.
#
# On unpatched udev versions the delete-recreate cycle may trigger a race
# leading to dead symlinks in /dev/disk/
for ((i = 1; i <= iterations; i++)); do
for disk in {0..9}; do
if ((disk % 2 == i % 2)); then
udevadm lock --device="${devices[$disk]}" sfdisk -q --delete "${devices[$disk]}" &
else
udevadm lock --device="${devices[$disk]}" sfdisk -q -X gpt "${devices[$disk]}" <"$partscript" &
fi
done
# Wait for the above sfdisk commands to be finished.
for disk in {0..9}; do
udevadm lock --device="${devices[$disk]}" true
done
if ((i % 10 <= 1)); then
udevadm wait --settle --timeout="$timeout" "${devices[@]}" "${symlinks[@]}"
helper_check_device_symlinks
helper_check_udev_watch
for ((part = 1; part <= num_part; part++)); do
link="/dev/disk/by-partlabel/test${part}"
target="$(readlink -f "$link")"
if ((i % 2 == 0)); then
expected="${devices[5]}$part"
else
expected="${devices[4]}$part"
fi
if [[ "$target" != "$expected" ]]; then
echo >&2 "ERROR: symlink '/dev/disk/by-partlabel/test${part}' points to '$target' but '$expected' was expected"
return 1
fi
done
fi
done
helper_check_device_units
rm -f "$rule" "$partscript"
udevadm control --reload
}
testcase_lvm_basic() {
local i iterations partitions part timeout
local vgroup="MyTestGroup$RANDOM"
local devices=(
/dev/disk/by-id/ata-foobar_deadbeeflvm{0..3}
)
if [[ -n "${ASAN_OPTIONS:-}" ]] || [[ "$(systemd-detect-virt -v)" == "qemu" ]]; then
timeout=180
else
timeout=30
fi
# Make sure all the necessary soon-to-be-LVM devices exist
ls -l "${devices[@]}"
# Add all test devices into a volume group, create two logical volumes,
# and check if necessary symlinks exist (and are valid)
lvm pvcreate -y "${devices[@]}"
lvm pvs
lvm vgcreate "$vgroup" -y "${devices[@]}"
lvm vgs
lvm vgchange -ay "$vgroup"
lvm lvcreate -y -L 4M "$vgroup" -n mypart1
lvm lvcreate -y -L 8M "$vgroup" -n mypart2
lvm lvs
udevadm wait --settle --timeout="$timeout" "/dev/$vgroup/mypart1" "/dev/$vgroup/mypart2"
mkfs.ext4 -L mylvpart1 "/dev/$vgroup/mypart1"
udevadm wait --settle --timeout="$timeout" "/dev/disk/by-label/mylvpart1"
helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
helper_check_device_units
# Rename partitions (see issue #24518)
lvm lvrename "/dev/$vgroup/mypart1" renamed1
lvm lvrename "/dev/$vgroup/mypart2" renamed2
udevadm wait --settle --timeout="$timeout" --removed "/dev/$vgroup/mypart1" "/dev/$vgroup/mypart2"
udevadm wait --settle --timeout="$timeout" "/dev/$vgroup/renamed1" "/dev/$vgroup/renamed2"
helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
helper_check_device_units
# Rename them back
lvm lvrename "/dev/$vgroup/renamed1" mypart1
lvm lvrename "/dev/$vgroup/renamed2" mypart2
udevadm wait --settle --timeout="$timeout" --removed "/dev/$vgroup/renamed1" "/dev/$vgroup/renamed2"
udevadm wait --settle --timeout="$timeout" "/dev/$vgroup/mypart1" "/dev/$vgroup/mypart2"
helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
helper_check_device_units
# Disable the VG and check symlinks...
lvm vgchange -an "$vgroup"
udevadm wait --settle --timeout="$timeout" --removed "/dev/$vgroup" "/dev/disk/by-label/mylvpart1"
helper_check_device_symlinks "/dev/disk"
helper_check_device_units
# reenable the VG and check the symlinks again if all LVs are properly activated
lvm vgchange -ay "$vgroup"
udevadm wait --settle --timeout="$timeout" "/dev/$vgroup/mypart1" "/dev/$vgroup/mypart2" "/dev/disk/by-label/mylvpart1"
helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
helper_check_device_units
# Same as above, but now with more "stress"
if [[ -n "${ASAN_OPTIONS:-}" ]] || [[ "$(systemd-detect-virt -v)" == "qemu" ]]; then
iterations=10
else
iterations=50
fi
for ((i = 1; i <= iterations; i++)); do
lvm vgchange -an "$vgroup"
lvm vgchange -ay "$vgroup"
if ((i % 5 == 0)); then
udevadm wait --settle --timeout="$timeout" "/dev/$vgroup/mypart1" "/dev/$vgroup/mypart2" "/dev/disk/by-label/mylvpart1"
helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
helper_check_device_units
fi
done
# Remove the first LV
lvm lvremove -y "$vgroup/mypart1"
udevadm wait --settle --timeout="$timeout" --removed "/dev/$vgroup/mypart1"
udevadm wait --timeout=0 "/dev/$vgroup/mypart2"
helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
helper_check_device_units
# Create & remove LVs in a loop, i.e. with more "stress"
if [[ -n "${ASAN_OPTIONS:-}" ]]; then
iterations=8
partitions=16
elif [[ "$(systemd-detect-virt -v)" == "qemu" ]]; then
iterations=8
partitions=8
else
iterations=16
partitions=16
fi
for ((i = 1; i <= iterations; i++)); do
# 1) Create some logical volumes
for ((part = 0; part < partitions; part++)); do
lvm lvcreate -y -L 4M "$vgroup" -n "looppart$part"
done
# 2) Immediately remove them
lvm lvremove -y $(seq -f "$vgroup/looppart%g" 0 "$((partitions - 1))")
# 3) On every 4th iteration settle udev and check if all partitions are
# indeed gone, and if all symlinks are still valid
if ((i % 4 == 0)); then
for ((part = 0; part < partitions; part++)); do
udevadm wait --settle --timeout="$timeout" --removed "/dev/$vgroup/looppart$part"
done
helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
helper_check_device_units
fi
done
}
testcase_btrfs_basic() {
local dev_stub i label mpoint uuid
local devices=(
/dev/disk/by-id/ata-foobar_deadbeefbtrfs{0..3}
)
ls -l "${devices[@]}"
echo "Single device: default settings"
uuid="deadbeef-dead-dead-beef-000000000000"
label="btrfs_root"
udevadm lock --device="${devices[0]}" mkfs.btrfs -L "$label" -U "$uuid" "${devices[0]}"
udevadm wait --settle --timeout=30 "${devices[0]}" "/dev/disk/by-uuid/$uuid" "/dev/disk/by-label/$label"
btrfs filesystem show
helper_check_device_symlinks
helper_check_device_units
echo "Multiple devices: using partitions, data: single, metadata: raid1"
uuid="deadbeef-dead-dead-beef-000000000001"
label="btrfs_mpart"
udevadm lock --device="${devices[0]}" sfdisk --wipe=always "${devices[0]}" <<EOF
label: gpt
name="diskpart1", size=85M
name="diskpart2", size=85M
name="diskpart3", size=85M
name="diskpart4", size=85M
EOF
udevadm wait --settle --timeout=30 /dev/disk/by-partlabel/diskpart{1..4}
udevadm lock --device="${devices[0]}" mkfs.btrfs -d single -m raid1 -L "$label" -U "$uuid" /dev/disk/by-partlabel/diskpart{1..4}
udevadm wait --settle --timeout=30 "/dev/disk/by-uuid/$uuid" "/dev/disk/by-label/$label"
btrfs filesystem show
helper_check_device_symlinks
helper_check_device_units
wipefs -a -f "${devices[0]}"
udevadm wait --settle --timeout=30 --removed /dev/disk/by-partlabel/diskpart{1..4}
echo "Multiple devices: using disks, data: raid10, metadata: raid10, mixed mode"
uuid="deadbeef-dead-dead-beef-000000000002"
label="btrfs_mdisk"
udevadm lock \
--device=/dev/disk/by-id/ata-foobar_deadbeefbtrfs0 \
--device=/dev/disk/by-id/ata-foobar_deadbeefbtrfs1 \
--device=/dev/disk/by-id/ata-foobar_deadbeefbtrfs2 \
--device=/dev/disk/by-id/ata-foobar_deadbeefbtrfs3 \
mkfs.btrfs -M -d raid10 -m raid10 -L "$label" -U "$uuid" "${devices[@]}"
udevadm wait --settle --timeout=30 "/dev/disk/by-uuid/$uuid" "/dev/disk/by-label/$label"
btrfs filesystem show
helper_check_device_symlinks
helper_check_device_units
echo "Multiple devices: using LUKS encrypted disks, data: raid1, metadata: raid1, mixed mode"
uuid="deadbeef-dead-dead-beef-000000000003"
label="btrfs_mencdisk"
mpoint="/btrfs_enc$RANDOM"
mkdir "$mpoint"
# Create a key-file
dd if=/dev/urandom of=/etc/btrfs_keyfile bs=64 count=1 iflag=fullblock
chmod 0600 /etc/btrfs_keyfile
# Encrypt each device and add it to /etc/crypttab, so it can be mounted
# automagically later
: >/etc/crypttab
for ((i = 0; i < ${#devices[@]}; i++)); do
# Intentionally use weaker cipher-related settings, since we don't care
# about security here as it's a throwaway LUKS partition
cryptsetup luksFormat -q \
--use-urandom --pbkdf pbkdf2 --pbkdf-force-iterations 1000 \
--uuid "deadbeef-dead-dead-beef-11111111111$i" --label "encdisk$i" "${devices[$i]}" /etc/btrfs_keyfile
udevadm wait --settle --timeout=30 "/dev/disk/by-uuid/deadbeef-dead-dead-beef-11111111111$i" "/dev/disk/by-label/encdisk$i"
# Add the device into /etc/crypttab, reload systemd, and then activate
# the device so we can create a filesystem on it later
echo "encbtrfs$i UUID=deadbeef-dead-dead-beef-11111111111$i /etc/btrfs_keyfile luks,noearly" >>/etc/crypttab
systemctl daemon-reload
systemctl start "systemd-cryptsetup@encbtrfs$i"
done
helper_check_device_symlinks
helper_check_device_units
# Check if we have all necessary DM devices
ls -l /dev/mapper/encbtrfs{0..3}
# Create a multi-device btrfs filesystem on the LUKS devices
udevadm lock \
--device=/dev/mapper/encbtrfs0 \
--device=/dev/mapper/encbtrfs1 \
--device=/dev/mapper/encbtrfs2 \
--device=/dev/mapper/encbtrfs3 \
mkfs.btrfs -M -d raid1 -m raid1 -L "$label" -U "$uuid" /dev/mapper/encbtrfs{0..3}
udevadm wait --settle --timeout=30 "/dev/disk/by-uuid/$uuid" "/dev/disk/by-label/$label"
btrfs filesystem show
helper_check_device_symlinks
helper_check_device_units
# Mount it and write some data to it we can compare later
mount -t btrfs /dev/mapper/encbtrfs0 "$mpoint"
echo "hello there" >"$mpoint/test"
# "Deconstruct" the btrfs device and check if we're in a sane state (symlink-wise)
umount "$mpoint"
systemctl stop systemd-cryptsetup@encbtrfs{0..3}
udevadm wait --settle --timeout=30 --removed "/dev/disk/by-uuid/$uuid"
helper_check_device_symlinks
helper_check_device_units
# Add the mount point to /etc/fstab and check if the device can be put together
# automagically. The source device is the DM name of the first LUKS device
# (from /etc/crypttab). We have to specify all LUKS devices manually, as
# registering the necessary devices is usually initrd's job (via btrfs device scan)
dev_stub="/dev/mapper/encbtrfs"
echo "/dev/mapper/encbtrfs0 $mpoint btrfs device=${dev_stub}0,device=${dev_stub}1,device=${dev_stub}2,device=${dev_stub}3 0 2" >>/etc/fstab
# Tell systemd about the new mount
systemctl daemon-reload
# Restart cryptsetup.target to trigger autounlock of partitions in /etc/crypttab
systemctl restart cryptsetup.target
# Start the corresponding mount unit and check if the btrfs device was reconstructed
# correctly
systemctl start "${mpoint##*/}.mount"
udevadm wait --settle --timeout=30 "/dev/disk/by-uuid/$uuid" "/dev/disk/by-label/$label"
btrfs filesystem show
helper_check_device_symlinks
helper_check_device_units
grep "hello there" "$mpoint/test"
# Cleanup
systemctl stop "${mpoint##*/}.mount"
systemctl stop systemd-cryptsetup@encbtrfs{0..3}
sed -i "/${mpoint##*/}/d" /etc/fstab
: >/etc/crypttab
rm -fr "$mpoint"
systemctl daemon-reload
udevadm settle
}
testcase_iscsi_lvm() {
local dev i label link lun_id mpoint target_name uuid
local target_ip="127.0.0.1"
local target_port="3260"
local vgroup="iscsi_lvm$RANDOM"
local expected_symlinks=()
local devices=(
/dev/disk/by-id/ata-foobar_deadbeefiscsi{0..3}
)
ls -l "${devices[@]}"
# Start the target daemon
systemctl start tgtd
systemctl status tgtd
echo "iSCSI LUNs backed by devices"
# See RFC3721 and RFC7143
target_name="iqn.2021-09.com.example:iscsi.test"
# Initialize a new iSCSI target <$target_name> consisting of 4 LUNs, each
# backed by a device
tgtadm --lld iscsi --op new --mode target --tid=1 --targetname "$target_name"
for ((i = 0; i < ${#devices[@]}; i++)); do
# lun-0 is reserved by iSCSI
lun_id="$((i + 1))"
tgtadm --lld iscsi --op new --mode logicalunit --tid 1 --lun "$lun_id" -b "${devices[$i]}"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun "$lun_id"
expected_symlinks+=(
"/dev/disk/by-path/ip-$target_ip:$target_port-iscsi-$target_name-lun-$lun_id"
)
done
tgtadm --lld iscsi --op bind --mode target --tid 1 -I ALL
# Configure the iSCSI initiator
iscsiadm --mode discoverydb --type sendtargets --portal "$target_ip" --discover
iscsiadm --mode node --targetname "$target_name" --portal "$target_ip:$target_port" --login
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}"
helper_check_device_symlinks
helper_check_device_units
# Cleanup
iscsiadm --mode node --targetname "$target_name" --portal "$target_ip:$target_port" --logout
tgtadm --lld iscsi --op delete --mode target --tid=1
echo "iSCSI LUNs backed by files + LVM"
# Note: we use files here to "trick" LVM the disks are indeed on a different
# host, so it doesn't automagically detect another path to the backing
# device once we disconnect the iSCSI devices
target_name="iqn.2021-09.com.example:iscsi.lvm.test"
mpoint="$(mktemp -d /iscsi_storeXXX)"
expected_symlinks=()
# Use the first device as it's configured with larger capacity
mkfs.ext4 -L iscsi_store "${devices[0]}"
udevadm wait --settle --timeout=30 "${devices[0]}"
mount "${devices[0]}" "$mpoint"
for i in {1..4}; do
dd if=/dev/zero of="$mpoint/lun$i.img" bs=1M count=32
done
# Initialize a new iSCSI target <$target_name> consisting of 4 LUNs, each
# backed by a file
tgtadm --lld iscsi --op new --mode target --tid=2 --targetname "$target_name"
# lun-0 is reserved by iSCSI
for i in {1..4}; do
tgtadm --lld iscsi --op new --mode logicalunit --tid 2 --lun "$i" -b "$mpoint/lun$i.img"
tgtadm --lld iscsi --op update --mode logicalunit --tid 2 --lun "$i"
expected_symlinks+=(
"/dev/disk/by-path/ip-$target_ip:$target_port-iscsi-$target_name-lun-$i"
)
done
tgtadm --lld iscsi --op bind --mode target --tid 2 -I ALL
# Configure the iSCSI initiator
iscsiadm --mode discoverydb --type sendtargets --portal "$target_ip" --discover
iscsiadm --mode node --targetname "$target_name" --portal "$target_ip:$target_port" --login
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}"
helper_check_device_symlinks
helper_check_device_units
# Add all iSCSI devices into a LVM volume group, create two logical volumes,
# and check if necessary symlinks exist (and are valid)
lvm pvcreate -y "${expected_symlinks[@]}"
lvm pvs
lvm vgcreate "$vgroup" -y "${expected_symlinks[@]}"
lvm vgs
lvm vgchange -ay "$vgroup"
lvm lvcreate -y -L 4M "$vgroup" -n mypart1
lvm lvcreate -y -L 8M "$vgroup" -n mypart2
lvm lvs
udevadm wait --settle --timeout=30 "/dev/$vgroup/mypart1" "/dev/$vgroup/mypart2"
mkfs.ext4 -L mylvpart1 "/dev/$vgroup/mypart1"
udevadm wait --settle --timeout=30 "/dev/disk/by-label/mylvpart1"
helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
helper_check_device_units
# Disconnect the iSCSI devices and check all the symlinks
iscsiadm --mode node --targetname "$target_name" --portal "$target_ip:$target_port" --logout
# "Reset" the DM state, since we yanked the backing storage from under the LVM,
# so the currently active VGs/LVs are invalid
dmsetup remove_all --deferred
# The LVM and iSCSI related symlinks should be gone
udevadm wait --settle --timeout=30 --removed "/dev/$vgroup" "/dev/disk/by-label/mylvpart1" "${expected_symlinks[@]}"
helper_check_device_symlinks "/dev/disk"
helper_check_device_units
# Reconnect the iSCSI devices and check if everything get detected correctly
iscsiadm --mode discoverydb --type sendtargets --portal "$target_ip" --discover
iscsiadm --mode node --targetname "$target_name" --portal "$target_ip:$target_port" --login
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}" "/dev/$vgroup/mypart1" "/dev/$vgroup/mypart2" "/dev/disk/by-label/mylvpart1"
helper_check_device_symlinks "/dev/disk" "/dev/$vgroup"
helper_check_device_units
# Cleanup
iscsiadm --mode node --targetname "$target_name" --portal "$target_ip:$target_port" --logout
tgtadm --lld iscsi --op delete --mode target --tid=2
umount "$mpoint"
rm -rf "$mpoint"
}
testcase_long_sysfs_path() {
local cursor link logfile mpoint
local expected_symlinks=(
"/dev/disk/by-label/data_vol"
"/dev/disk/by-label/swap_vol"
"/dev/disk/by-partlabel/test_swap"
"/dev/disk/by-partlabel/test_part"
"/dev/disk/by-partuuid/deadbeef-dead-dead-beef-000000000000"
"/dev/disk/by-uuid/deadbeef-dead-dead-beef-111111111111"
"/dev/disk/by-uuid/deadbeef-dead-dead-beef-222222222222"
)
# Create a cursor file to skip messages generated by udevd in initrd, as it
# might not be the same up-to-date version as we currently run (hence generating
# messages we check for later and making the test fail)
cursor="$(mktemp)"
journalctl --cursor-file="${cursor:?}" -n0 -q
# Make sure the test device is connected and show its "wonderful" path
stat /sys/block/vda
readlink -f /sys/block/vda/dev
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}"
# Try to mount the data partition manually (using its label)
mpoint="$(mktemp -d /logsysfsXXX)"
mount LABEL=data_vol "$mpoint"
touch "$mpoint/test"
umount "$mpoint"
# Do the same, but with UUID and using fstab
echo "UUID=deadbeef-dead-dead-beef-222222222222 $mpoint ext4 defaults 0 0" >>/etc/fstab
systemctl daemon-reload
mount "$mpoint"
timeout 30 bash -c "while ! systemctl -q is-active '$mpoint'; do sleep .2; done"
test -e "$mpoint/test"
umount "$mpoint"
# Test out the swap partition
swapon -v -L swap_vol
swapoff -v -L swap_vol
udevadm settle
logfile="$(mktemp)"
# Check state of affairs after https://github.com/systemd/systemd/pull/22759
# Note: can't use `--cursor-file` here, since we don't want to update the cursor
# after using it
[[ "$(journalctl --after-cursor="$(<"$cursor")" -q --no-pager -o short-monotonic -p info --grep "Device path.*vda.?' too long to fit into unit name" | wc -l)" -eq 0 ]]
[[ "$(journalctl --after-cursor="$(<"$cursor")" -q --no-pager -o short-monotonic --grep "Unit name .*vda.?\.device\" too long, falling back to hashed unit name" | wc -l)" -gt 0 ]]
# Check if the respective "hashed" units exist and are active (plugged)
systemctl status --no-pager "$(readlink -f /sys/block/vda/vda1)"
systemctl status --no-pager "$(readlink -f /sys/block/vda/vda2)"
# Make sure we don't unnecessarily spam the log
{ journalctl -b -q --no-pager -o short-monotonic -p info --grep "/sys/devices/.+/vda[0-9]?" _PID=1 + UNIT=systemd-udevd.service || :;} | tee "$logfile"
[[ "$(wc -l <"$logfile")" -lt 10 ]]
: >/etc/fstab
rm -fr "${cursor:?}" "${logfile:?}" "${mpoint:?}"
}
testcase_mdadm_basic() {
local i part_name raid_name raid_dev uuid
local expected_symlinks=()
local devices=(
/dev/disk/by-id/ata-foobar_deadbeefmdadm{0..4}
)
ls -l "${devices[@]}"
echo "Mirror raid (RAID 1)"
raid_name="mdmirror"
raid_dev="/dev/md/$raid_name"
part_name="${raid_name}_part"
uuid="aaaaaaaa:bbbbbbbb:cccccccc:00000001"
expected_symlinks=(
"$raid_dev"
"/dev/disk/by-id/md-name-H:$raid_name"
"/dev/disk/by-id/md-uuid-$uuid"
"/dev/disk/by-label/$part_name" # ext4 partition
)
# Create a simple RAID 1 with an ext4 filesystem
echo y | mdadm --create "$raid_dev" --name "$raid_name" --uuid "$uuid" /dev/disk/by-id/ata-foobar_deadbeefmdadm{0..1} -v -f --level=1 --raid-devices=2
udevadm wait --settle --timeout=30 "$raid_dev"
mkfs.ext4 -L "$part_name" "$raid_dev"
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}"
for i in {0..9}; do
echo "Disassemble - reassemble loop, iteration #$i"
mdadm -v --stop "$raid_dev"
udevadm wait --settle --timeout=30 --removed "${expected_symlinks[@]}"
mdadm --assemble "$raid_dev" --name "$raid_name" -v
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}"
done
helper_check_device_symlinks
helper_check_device_units
# Cleanup
mdadm -v --stop "$raid_dev"
udevadm wait --settle --timeout=30 --removed "${expected_symlinks[@]}"
echo "Parity raid (RAID 5)"
raid_name="mdparity"
raid_dev="/dev/md/$raid_name"
part_name="${raid_name}_part"
uuid="aaaaaaaa:bbbbbbbb:cccccccc:00000101"
expected_symlinks=(
"$raid_dev"
"/dev/disk/by-id/md-name-H:$raid_name"
"/dev/disk/by-id/md-uuid-$uuid"
"/dev/disk/by-label/$part_name" # ext4 partition
)
# Create a simple RAID 5 with an ext4 filesystem
echo y | mdadm --create "$raid_dev" --name "$raid_name" --uuid "$uuid" /dev/disk/by-id/ata-foobar_deadbeefmdadm{0..2} -v -f --level=5 --raid-devices=3
udevadm wait --settle --timeout=30 "$raid_dev"
mkfs.ext4 -L "$part_name" "$raid_dev"
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}"
for i in {0..9}; do
echo "Disassemble - reassemble loop, iteration #$i"
mdadm -v --stop "$raid_dev"
udevadm wait --settle --timeout=30 --removed "${expected_symlinks[@]}"
mdadm --assemble "$raid_dev" --name "$raid_name" -v
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}"
done
helper_check_device_symlinks
helper_check_device_units
# Cleanup
mdadm -v --stop "$raid_dev"
udevadm wait --settle --timeout=30 --removed "${expected_symlinks[@]}"
helper_check_device_units
echo "Mirror + parity raid (RAID 10) + multiple partitions"
raid_name="mdmirpar"
raid_dev="/dev/md/$raid_name"
part_name="${raid_name}_part"
uuid="aaaaaaaa:bbbbbbbb:cccccccc:00001010"
expected_symlinks=(
"$raid_dev"
"/dev/disk/by-id/md-name-H:$raid_name"
"/dev/disk/by-id/md-uuid-$uuid"
"/dev/disk/by-label/$part_name" # ext4 partition
# Partitions
"${raid_dev}1"
"${raid_dev}2"
"${raid_dev}3"
"/dev/disk/by-id/md-name-H:$raid_name-part1"
"/dev/disk/by-id/md-name-H:$raid_name-part2"
"/dev/disk/by-id/md-name-H:$raid_name-part3"
"/dev/disk/by-id/md-uuid-$uuid-part1"
"/dev/disk/by-id/md-uuid-$uuid-part2"
"/dev/disk/by-id/md-uuid-$uuid-part3"
)
# Create a simple RAID 10 with an ext4 filesystem
echo y | mdadm --create "$raid_dev" --name "$raid_name" --uuid "$uuid" /dev/disk/by-id/ata-foobar_deadbeefmdadm{0..3} -v -f --level=10 --raid-devices=4
udevadm wait --settle --timeout=30 "$raid_dev"
# Partition the raid device
# Here, 'udevadm lock' is meaningless, as udevd does not lock MD devices.
sfdisk --wipe=always "$raid_dev" <<EOF
label: gpt
uuid="deadbeef-dead-dead-beef-111111111111", name="mdpart1", size=8M
uuid="deadbeef-dead-dead-beef-222222222222", name="mdpart2", size=32M
uuid="deadbeef-dead-dead-beef-333333333333", name="mdpart3", size=16M
EOF
udevadm wait --settle --timeout=30 "/dev/disk/by-id/md-uuid-$uuid-part2"
mkfs.ext4 -L "$part_name" "/dev/disk/by-id/md-uuid-$uuid-part2"
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}"
for i in {0..9}; do
echo "Disassemble - reassemble loop, iteration #$i"
mdadm -v --stop "$raid_dev"
udevadm wait --settle --timeout=30 --removed "${expected_symlinks[@]}"
mdadm --assemble "$raid_dev" --name "$raid_name" -v
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}"
done
helper_check_device_symlinks
helper_check_device_units
# Cleanup
mdadm -v --stop "$raid_dev"
# Check if all expected symlinks were removed after the cleanup
udevadm wait --settle --timeout=30 --removed "${expected_symlinks[@]}"
helper_check_device_units
}
testcase_mdadm_lvm() {
local part_name raid_name raid_dev uuid vgroup
local expected_symlinks=()
local devices=(
/dev/disk/by-id/ata-foobar_deadbeefmdadmlvm{0..4}
)
ls -l "${devices[@]}"
raid_name="mdlvm"
raid_dev="/dev/md/$raid_name"
part_name="${raid_name}_part"
vgroup="${raid_name}_vg"
uuid="aaaaaaaa:bbbbbbbb:ffffffff:00001010"
expected_symlinks=(
"$raid_dev"
"/dev/$vgroup/mypart1" # LVM partition
"/dev/$vgroup/mypart2" # LVM partition
"/dev/disk/by-id/md-name-H:$raid_name"
"/dev/disk/by-id/md-uuid-$uuid"
"/dev/disk/by-label/$part_name" # ext4 partition
)
# Create a RAID 10 with LVM + ext4
echo y | mdadm --create "$raid_dev" --name "$raid_name" --uuid "$uuid" /dev/disk/by-id/ata-foobar_deadbeefmdadmlvm{0..3} -v -f --level=10 --raid-devices=4
udevadm wait --settle --timeout=30 "$raid_dev"
# Create an LVM on the MD
lvm pvcreate -y "$raid_dev"
lvm pvs
lvm vgcreate "$vgroup" -y "$raid_dev"
lvm vgs
lvm vgchange -ay "$vgroup"
lvm lvcreate -y -L 4M "$vgroup" -n mypart1
lvm lvcreate -y -L 8M "$vgroup" -n mypart2
lvm lvs
udevadm wait --settle --timeout=30 "/dev/$vgroup/mypart1" "/dev/$vgroup/mypart2"
mkfs.ext4 -L "$part_name" "/dev/$vgroup/mypart2"
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}"
# Disassemble the array
lvm vgchange -an "$vgroup"
mdadm -v --stop "$raid_dev"
udevadm wait --settle --timeout=30 --removed "${expected_symlinks[@]}"
helper_check_device_symlinks
helper_check_device_units
# Reassemble it and check if all required symlinks exist
mdadm --assemble "$raid_dev" --name "$raid_name" -v
udevadm wait --settle --timeout=30 "${expected_symlinks[@]}"
helper_check_device_symlinks
helper_check_device_units
# Cleanup
lvm vgchange -an "$vgroup"
mdadm -v --stop "$raid_dev"
# Check if all expected symlinks were removed after the cleanup
udevadm wait --settle --timeout=30 --removed "${expected_symlinks[@]}"
helper_check_device_units
}
: >/failed
udevadm settle
udevadm control --log-level debug
lsblk -a
echo "Check if all symlinks under /dev/disk/ are valid (pre-test)"
helper_check_device_symlinks
# TEST_FUNCTION_NAME is passed on the kernel command line via systemd.setenv=
# in the respective test.sh file
if ! command -v "${TEST_FUNCTION_NAME:?}"; then
echo >&2 "Missing verification handler for test case '$TEST_FUNCTION_NAME'"
exit 1
fi
echo "TEST_FUNCTION_NAME=$TEST_FUNCTION_NAME"
"$TEST_FUNCTION_NAME"
udevadm settle
echo "Check if all symlinks under /dev/disk/ are valid (post-test)"
helper_check_device_symlinks
udevadm control --log-level info
systemctl status systemd-udevd
touch /testok
rm /failed
|