38b14df72c
When running inside a Docker container, we cannot rely on devices in /dev/mapper to be automagically created by udev, because we probably don't have a udev at all. To work around this, run dmsetup mknodes after every kpartx run. Change-Id: If7e30579224ce54c5ed26d08974d8293c144719a
41 lines
998 B
Bash
Executable File
41 lines
998 B
Bash
Executable File
#!/bin/bash
|
|
|
|
set -eu
|
|
set -o pipefail
|
|
source $_LIB/die
|
|
[ -n "$IMAGE_BLOCK_DEVICE" ] || die "Image block device not set"
|
|
|
|
# Create 1 partition far enough up the disk to permit grub to be installed on
|
|
# the MBR.
|
|
sudo sfdisk $IMAGE_BLOCK_DEVICE << EOF
|
|
1 - - *
|
|
0 0;
|
|
0 0;
|
|
0 0;
|
|
EOF
|
|
|
|
sudo partprobe $IMAGE_BLOCK_DEVICE
|
|
|
|
# To ensure no race conditions exist from calling partprobe
|
|
sudo udevadm settle
|
|
|
|
# If the partition isn't under /dev/loop*p1, create it with kpartx
|
|
DM=
|
|
if [ ! -e "${IMAGE_BLOCK_DEVICE}p1" ]; then
|
|
DM=${IMAGE_BLOCK_DEVICE/#\/dev/\/dev\/mapper}
|
|
# If running inside Docker, make our nodes manually, because udev will not be working.
|
|
if [ -f /.dockerenv ]; then
|
|
# kpartx cannot run in sync mode in docker.
|
|
sudo kpartx -av $TMP_IMAGE_PATH
|
|
sudo dmsetup --noudevsync mknodes
|
|
else
|
|
sudo kpartx -asv $TMP_IMAGE_PATH
|
|
fi
|
|
fi
|
|
|
|
if [ -n "$DM" ]; then
|
|
echo "IMAGE_BLOCK_DEVICE=${DM}p1"
|
|
else
|
|
echo "IMAGE_BLOCK_DEVICE=${IMAGE_BLOCK_DEVICE}p1"
|
|
fi
|