I frequently use the following Bash shell function to allow me to locate and
read pool/cpool files as I got tired of manually converting to the
pool heirarchy decoding. It's not very complicated, but helpful
1. You can enter either:
- 32 hex character digest (lower case): <32hex>
- attrib file name with/without preceding path and either in the
"normal" or inode form. i.e..
[<path>/]attrib_<32hex>
[<path>/]attrib<2hex>_<32hex>
2. It works with pool or cpool
3. It works with v3/v4
#####################################################################################
function BackupPC_zcatPool ()
{
local BACKUPPC_ZCAT=$(which BackupPC_zcat)
[ -n "$BACKUPPC_ZCAT" ] ||
BACKUPPC_ZCAT=/usr/share/backuppc/bin/BackupPC_zcat
[ -n "$CPOOL" ] || local CPOOL=/var/lib/backuppc/cpool
[ -n "$POOL" ] || local POOL=/var/lib/backuppc/pool
local file=${1##*/} #Strip the path prefix
#If attrib file...
file=${file/attrib[0-9a-f][0-9a-f]_/attrib_} #Convert inode format attrib
to normal attrib
file=${file##attrib_} #Extract the md5sum from the attrib file name
local ABCD=$(printf '%x' "$(( 0x${file:0:4} & 0xfefe ))")
local prefix="${ABCD:0:2}/${ABCD:2:2}"
# echo $prefix
if [ -e "$CPOOL/$prefix/$file" ]; then #V4 - cpool
$BACKUPPC_ZCAT $CPOOL/$prefix/$file
elif [ -e "$POOL/$prefix/$file" ]; then #V4 - pool
cat $CPOOL/$prefix/$file
elif [ -e "$CPOOL/${file:0:1}/${file:1:1}/${file:2:1}/$file" ]; then #V3 -
cpool
$BACKUPPC_ZCAT "$CPOOL/${file:0:1}/${file:1:1}/${file:2:1}/$file"
elif [ -e "$POOL/${file:0:1}/${file:1:1}/${file:2:1}/$file" ]; then #V3 -
pool
cat "$POOL/${file:0:1}/${file:1:1}/${file:2:1}/$file"
else
echo "Can't find pool file: $file" >/dev/stderr
fi
}
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