3beb89f8bf
When we create the ext4 filesystem on the ephemeral device presented to rax nodes do so with roughly twice the number of inodes as the default ext4 bytes to inodes ratio. We do this because we have found that we have in multiple cases needed more inodes and that is difficult to deal with after the fact. This may create more inodes than necessary in other cases but the cost is relatively low (just more disk used). Change-Id: Ie5414212f4505e98ba3ee8144ac90fcd05aa5b67
67 lines
2.8 KiB
Bash
67 lines
2.8 KiB
Bash
#!/bin/bash
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# Copyright 2013 OpenStack Foundation
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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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# If we're running on a cloud server with no swap, fix that:
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if [ `grep SwapTotal /proc/meminfo | awk '{ print $2; }'` -eq 0 ]; then
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if [ -b /dev/vdb ]; then
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DEV='/dev/vdb'
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elif [ -b /dev/xvde ]; then
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DEV='/dev/xvde'
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fi
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# Avoid using config drive device for swap
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if [ -n "$DEV" ] && ! blkid | grep $DEV | grep TYPE ; then
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MEMKB=`grep MemTotal /proc/meminfo | awk '{print $2; }'`
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# Use the nearest power of two in MB as the swap size.
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# This ensures that the partitions below are aligned properly.
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MEM=`python -c "import math ; print 2**int(round(math.log($MEMKB/1024, 2)))"`
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if mount | grep ${DEV} > /dev/null; then
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echo "*** ${DEV} appears to already be mounted"
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echo "*** ${DEV} unmounting and reformating"
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umount ${DEV}
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fi
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parted ${DEV} --script -- \
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mklabel msdos \
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mkpart primary linux-swap 1 ${MEM} \
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mkpart primary ext2 ${MEM} -1
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sync
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# We are only interested in scanning $DEV, not all block devices
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sudo partprobe ${DEV}
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# The device partitions might not show up immediately, make sure
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# they are ready and available for use
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udevadm settle --timeout=0 || echo "Block device not ready yet. Waiting for up to 10 seconds for it to be ready"
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udevadm settle --timeout=10 --exit-if-exists=${DEV}1
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udevadm settle --timeout=10 --exit-if-exists=${DEV}2
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mkswap ${DEV}1
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# The default ratio is 16384 bytes per inode or so. Reduce that to 8192
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# bytes per inode so that we get roughly twice the number of inodes as
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# by default. This should still be well above the block size of 4096.
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# We do this because we have found in at least a couple locations that
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# more inodes is useful and is painful to fix after the fact.
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mkfs.ext4 -i 8192 ${DEV}2
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swapon ${DEV}1
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mount ${DEV}2 /mnt
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rsync -a /opt/ /mnt/
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umount /mnt
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perl -nle "m,${DEV}, || print" -i /etc/fstab
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echo "${DEV}1 none swap sw 0 0" >> /etc/fstab
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echo "${DEV}2 /opt ext4 errors=remount-ro,barrier=0 0 2" >> /etc/fstab
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mount -a
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fi
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fi
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