74 lines
2.6 KiB
Ruby
74 lines
2.6 KiB
Ruby
# Copyright 2013 Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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module Astute
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class SshEraseNodes
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def self.command
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<<-ERASE_COMMAND
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killall -STOP anaconda
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killall -STOP debootstrap dpkg
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echo "5" > /proc/sys/kernel/panic
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echo "1" > /proc/sys/kernel/sysrq
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echo "1" > /proc/sys/kernel/panic_on_oops
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STORAGE_DEVICE_NUMBERS="3, 8, 65, 66, 67, 68, 69, 70, 71, 104, 105, 106, 107, 108, 109, 110, 111, 202, 252, 253"
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BLOCK_DEVICES=$(sed -nr 's#^.*[0-9]\s+([a-z]+|cciss\/c[0-9]+d[0-9]+)$#\\1#p' /proc/partitions)
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erase_data() {
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echo "Run erase_data with dev= /dev/$1 length = $2 offset = $3 bs = $4"
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dd if=/dev/zero of="/dev/$1" count="$2" seek="$3" bs="$4"
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blockdev --flushbufs "/dev/$1"
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}
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erase_partitions() {
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for PART in $(sed -nr 's#^.*[0-9]\s+('"$1"'p?[0-9]+)$#\\1#p' /proc/partitions)
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do
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erase_data "$PART" "$2" "$3" "$4"
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done
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}
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erase_boot_devices() {
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for DEVICE in $BLOCK_DEVICES
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do
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MAJOR=$(sed -nr 's#^\s+([0-9]+)\s.*\s'"$DEVICE"'$#\\1#p' /proc/partitions)
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SIZE=$(($(sed -nr 's#^(\s+[0-9]+){2}\s+([0-9]+)\s+'"$DEVICE"'$#\\2#p' /proc/partitions) * 2))
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echo "$STORAGE_DEVICE_NUMBERS" | grep -wq "$MAJOR" || continue
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grep -wq 0 "/sys/block/$(echo $DEVICE | sed 's#/#!#')/removable" || continue
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erase_data "$DEVICE" 1 0 512
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erase_data "$DEVICE" 1 $(($SIZE-1)) 512
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erase_partitions "$DEVICE" 1 0 512
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done
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}
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if [ -r /etc/nailgun_systemtype ]; then
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NODE_TYPE=$(cat /etc/nailgun_systemtype)
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else
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NODE_TYPE="provisioning"
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fi
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# Check what was mounted to '/': drive (provisioned node)
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# or init ramdisk (bootsrapped/provisioning node)
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if grep -Eq 'root=[^[:blank:]]+' /proc/cmdline; then
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echo "Do not erase $NODE_TYPE node using shell"
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else
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echo "Run erase command on ${NODE_TYPE} node"
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erase_boot_devices
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fi
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ERASE_COMMAND
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end
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end
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end
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