cat-bdinfo: script to help running an instance and collecting block-device-mapping data

cat-bdinfo

#!/bin/sh
# this was used in testing of block device mapping bugs, ie:
#  http://pad.lv/851145: ephemeral device (local_gb) does not get a filesystem 
#  http://pad.lv/827598: ephemeral device does not have a filesystem
#  http://pad.lv/827590: cloud-init does not mount /mnt
#  http://pad.lv/828357: request to add a label to the filesystem for ephemeral devices
#
# Usage:
#   set up the following functions
#     dorun()  { ./cat-bdinfo $* > my-bdinfo; euca-run-instances --user-data-file  my-bdinfo --key mykey $*; }
#     getout() { euca-get-console-output $1 | sed -n '/START/,/END/ { /^#/d; p  }'; }
# dorun --instance-type m1.xsmall ami-00000003 --block-device-mapping /dev/vdb=ephemeral0
# ... wait ...
# getout <instance-id>
cat <<EOF
#!/bin/sh

echo "####### START ######"
echo "args: $*"
EOF

cat <<"EOF"

mkdir -p /tmp/xmytmp
cd /tmp/xmytmp
rm -f *

## ttylinux doesn't have the devices so make them
while read maj min blk name ; do
   [ -z "$maj" -o "$maj" = "major" ] && continue
   [ -e /dev/$name ] || mknod -m 0660 /dev/$name b $maj $min
done < /proc/partitions

md="http://169.254.169.254/latest/meta-data/"
bdm="$md/block-device-mapping/"

echo "===== metadata ===="
wget "$md" >/dev/null 2>&1
echo "metadata/: $(grep block-device-mapping index.html)"
rm -f index.html

wget "$bdm" >/dev/null 2>&1
mv index.html bdm
for x in $(cat bdm); do
   wget "$bdm/$x" >/dev/null 2>&1
   echo "$x: $(cat $x)"
   rm -f $x;
done

echo "===== /proc/partitions ===="
cat /proc/partitions

echo "===== blkid ===="
blkid

echo "###### END ######"
EOF