e7a8fefa0b
If the loop partition isn't created as a device by the kernel, go ahead and use kpartx to create the device. Change-Id: I53290b7724d0cb45a1fc9225ec096025db8978dd
31 lines
700 B
Bash
Executable file
31 lines
700 B
Bash
Executable file
#!/bin/bash
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set -e
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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 $IMAGE_BLOCK_DEVICE
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# To ensure no race conditions exist from calling partprobe
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sudo udevadm settle
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# If the partition isn't under /dev/loop*p1, create it with kpartx
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if [ ! -e "${IMAGE_BLOCK_DEVICE}p1" ]; then
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sudo kpartx -asv $TMP_IMAGE_PATH
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DM=${IMAGE_BLOCK_DEVICE/#\/dev/\/dev\/mapper}
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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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