openstack/ironic-python-agent
Code Issues Proposed changes

Clear GPT and MBR data structures on disk before imaging

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This patch clears all GPT and MBR data structures on the disk.
GPT maintains its data structures at start and at end of the
disk.

Change-Id: I8d0b367755b568cb44f02f62b873659b4bea0f14
Closes-Bug: #1543339
This commit is contained in:
Shivanand Tendulker
2016-02-09 08:35:36 -08:00
parent e76390b915
commit 8f5ed3e2f1
1 changed files with 2 additions and 2 deletions
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4
ironic_python_agent/shell/write_image.sh
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@@ -35,8 +35,8 @@ DEVICE="$2"
# In production this will be replaced with secure erasing the drives
# For now we need to ensure there aren't any old (GPT) partitions on the drive
log "Erasing existing mbr from ${DEVICE}"
dd if=/dev/zero of=$DEVICE bs=512 count=10
log "Erasing existing GPT and MBR data structures from ${DEVICE}"
sgdisk -Z $DEVICE
log "Imaging $IMAGEFILE to $DEVICE"
qemu-img convert -t directsync -O host_device $IMAGEFILE $DEVICE