starlingx/metal
Code Issues Proposed changes

Merge "Wipe OSD journals during host reinstall"

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Zuul 2020-05-25 17:28:15 +00:00 committed by Gerrit Code Review
commit 1a6a533bcb
1 changed files with 31 additions and 5 deletions
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36
mtce/src/scripts/wipedisk
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@ -70,6 +70,22 @@ done
WIPE_HDD="$pvs_to_delete $WIPE_HDD"
# During host reinstalls ceph journals also require wiping, so we also gather information on
# journal partitions. Even if this script is also called during upgrades, there was no issue
# observed during that operation, so we skip wiping the journals during upgrades.
JOURNAL_DISKS=""
HOST_IN_UPGRADE=$(curl -sf http://pxecontroller:6385/v1/upgrade/$(hostname)/in_upgrade 2>/dev/null)
# The "ceph-disk list" command works even if the ceph cluster is not operational (for example if
# too many monitors are down) so we can grab journal info from the node, even in such scenarios.
# As a safety measure, we also wrap the command in a timeout command; it should never take long
# for the command to return, but if it does it's safer to just time it out after 15 seconds.
CEPH_DISK_OUTPUT=$(timeout 15 ceph-disk list 2>/dev/null)
if [[ $? == 0 && "$HOST_IN_UPGRADE" != "true" ]]; then
JOURNAL_DISKS=$(echo "$CEPH_DISK_OUTPUT" | grep "ceph journal" | awk '{print $1}')
fi
WIPE_HDD="$JOURNAL_DISKS $WIPE_HDD"
if [ ! $FORCE ]
then
echo "This will result in the loss of all data on the hard drives and"
@ -142,11 +158,21 @@ do
echo "Wiping $dev..."
wipefs -f -a $dev
# Clearing previous GPT tables or LVM data
# Delete the first few bytes at the start and end of the partition. This is required with
# GPT partitions, they save partition info at the start and the end of the block.
dd if=/dev/zero of=$dev bs=512 count=34
dd if=/dev/zero of=$dev bs=512 count=34 seek=$((`blockdev --getsz $dev` - 34))
echo "$JOURNAL_DISKS" | grep -qw "$dev"
if [[ $? == 0 ]]; then
# Journal partitions require additional wiping. Based on the ceph-manage-journal.py
# script in the integ repo (at the ceph/ceph/files/ceph-manage-journal.py location)
# wiping 100MB of data at the beginning of the partition should be enough. We also
# wipe 100MB at the end, just to be safe.
dd if=/dev/zero of=$dev bs=1M count=100
dd if=/dev/zero of=$dev bs=1M count=100 seek=$((`blockdev --getsz $dev` - 204800))
else
# Clearing previous GPT tables or LVM data
# Delete the first few bytes at the start and end of the partition. This is required with
# GPT partitions, they save partition info at the start and the end of the block.
dd if=/dev/zero of=$dev bs=512 count=34
dd if=/dev/zero of=$dev bs=512 count=34 seek=$((`blockdev --getsz $dev` - 34))
fi
fi
fi
done