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test: wait for the kernel finishes to attach backing file to loop device

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Fixes #32680.
This commit is contained in:
Yu Watanabe 2024-05-28 11:51:48 +09:00 committed by Daan De Meyer
parent f4434c61b9
commit 61fdb5b214
1 changed files with 6 additions and 1 deletions
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7
test/units/TEST-74-AUX-UTILS.mount.sh
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@ -159,7 +159,12 @@ timeout 60 bash -c "while [[ -e /sys/$LOOP_AUTO_DEVPATH/loop/backing_file ]]; do
dd if=/dev/zero of="$WORK_DIR/owner-vfat.img" bs=1M count=16
mkfs.vfat -n owner-vfat "$WORK_DIR/owner-vfat.img"
LOOP="$(losetup --show --find "$WORK_DIR/owner-vfat.img")"
udevadm wait --timeout 60 --settle "$LOOP"
# If the synthesized uevent triggered by inotify event has been processed earlier than the kernel finishes to
# attach the backing file, then SYSTEMD_READY=0 is set for the device. As a workaround, monitor sysattr
# and re-trigger uevent after that.
LOOP_DEVPATH=$(udevadm info --query property --property DEVPATH --value "$LOOP")
timeout 60 bash -c "until [[ -e /sys/$LOOP_DEVPATH/loop/backing_file ]]; do sleep 1; done"
udevadm trigger --settle "$LOOP"
# Also wait for the .device unit for the loop device is active. Otherwise, the .device unit activation
# that is triggered by the .mount unit introduced by systemd-mount below may time out.
if ! timeout 60 bash -c "until systemctl is-active $LOOP; do sleep 1; done"; then