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
40 lines
998 B
Bash
Executable file
40 lines
998 B
Bash
Executable file
#!/bin/bash
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set -eu
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set -o pipefail
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source $_LIB/die
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[ -n "$IMAGE_BLOCK_DEVICE" ] || die "Image block device not set"
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# Create 1 partition far enough up the disk to permit grub to be installed on
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# the MBR.
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sudo sfdisk $IMAGE_BLOCK_DEVICE << EOF
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1 - - *
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0 0;
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0 0;
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0 0;
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EOF
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sudo partprobe $IMAGE_BLOCK_DEVICE
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# To ensure no race conditions exist from calling partprobe
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sudo udevadm settle
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# If the partition isn't under /dev/loop*p1, create it with kpartx
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DM=
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if [ ! -e "${IMAGE_BLOCK_DEVICE}p1" ]; then
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DM=${IMAGE_BLOCK_DEVICE/#\/dev/\/dev\/mapper}
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# If running inside Docker, make our nodes manually, because udev will not be working.
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if [ -f /.dockerenv ]; then
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# kpartx cannot run in sync mode in docker.
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sudo kpartx -av $TMP_IMAGE_PATH
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sudo dmsetup --noudevsync mknodes
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else
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sudo kpartx -asv $TMP_IMAGE_PATH
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fi
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fi
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if [ -n "$DM" ]; then
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echo "IMAGE_BLOCK_DEVICE=${DM}p1"
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else
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echo "IMAGE_BLOCK_DEVICE=${IMAGE_BLOCK_DEVICE}p1"
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fi
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