#!/bin/bash
# first of all create and mount a ramdisk, i.e.
# sudo mkdir -p /mount/point/folder -m 755 alice
# sudo mount -o size=12G -t tmpfs tmpdir /mount/point/folder
# ajust the variables below
# point only blocks folder to ramdisk, i.e. -blocksdir=/mount/point/folder
# use it on first run
# run this script BEFORE starting bitcoind
# otherwise move some last blk and rev files to ramdisk
# symlink all blk and rev files from ramfs -> hdd/ssd
# make sure your pc doesnt run out of power
# I have a nobreak for that
# with this setup, the sync will be limited by others factors than media speed
# shutdown bitcoind with ctrl + c, and move all non link elements to hdd/ssd
# get the blocks starting from BNBER
# this will let at least 7 blk and 7 rev files on ramdisk
BNBER=7
ACTUALDIR=/home/alice/bcdata/BTC/blocks
RAMDISK=/home/alice/temp/BTC/blocks
set -e
while true
do
# iterate only over regular files excluding links and the BNBER most recent ones
for blkfile in $(find $RAMDISK/blk*.dat -type f -printf "%f\n" | sort -r | tail -n +$BNBER)
do
mv $RAMDISK/$blkfile $ACTUALDIR/$blkfile
ln -s $ACTUALDIR/$blkfile $RAMDISK/$blkfile
done
for blkfile in $(find $RAMDISK/rev*.dat -type f -printf "%f\n" | sort -r | tail -n +$BNBER)
do
mv $RAMDISK/$blkfile $ACTUALDIR/$blkfile
ln -s $ACTUALDIR/$blkfile $RAMDISK/$blkfile
done
sleep 10m
done
#!/bin/bash
# first of all create and mount a ramdisk, i.e.
# sudo mkdir -p /mount/point/folder -m 755
# sudo mount -o size=4G -t tmpfs tmpdir /mount/point/folder
# ajust the variables on this script
# point -blocksdir to ramdisk
# link all files from persistent storage
# targeting blocks folder on ramdisk
# run this script on background to periodically flush
# blk and rev files to persistent storage and link them
# make sure your pc doesnt run out of power
# I have a nobreak for that
# You can do a checkpoint by stoping bitcoind, and making a
# copy of chainstate and index folder and some blk and rev files
# After finishing up the sync,
# just copy all the real files from ramdisk to persistent storage
# get the blocks starting from BNBER
# 6 will let at least 6 blk and 6 rev files on ramdisk
BNBER=6
ACTUALDIR=/home/alice/bcdata/BTC/blocks
RAMDISK=/home/alice/temp/BTC/blocks
mkdir -p $RAMDISK
while true
do
# iterate only over regular files, not folders nor links
for blkfile in $(find $RAMDISK/blk*.dat -type f -printf "%f\n" | sort -r | tail -n +$BNBER)
do
mv $RAMDISK/$blkfile $ACTUALDIR/$blkfile
ln -s $ACTUALDIR/$blkfile $RAMDISK/$blkfile
done
for blkfile in $(find $RAMDISK/rev*.dat -type f -printf "%f\n" | sort -r | tail -n +$BNBER)
do
mv $RAMDISK/$blkfile $ACTUALDIR/$blkfile
ln -s $ACTUALDIR/$blkfile $RAMDISK/$blkfile
done
sleep 10m
done
2020-04-19T14:59:15Z UpdateTip: new best=000000000000000000058a121d528381db4b076ef68c30b769066f92bab1cd77 height=626706 version=0x20400000 log2_work=91.873412 tx=522195769 date='2020-04-19T14:14:27Z' progress=0.999981 cache=34.9MiB(256790txo) warning='65 of last 100 blocks have unexpected version'
2020-04-19T14:59:16Z UpdateTip: new best=0000000000000000000f07e447142f811d24c5c1784b23661ea28f2fe3ffcecc height=626707 version=0x20000000 log2_work=91.873432 tx=522197017 date='2020-04-19T14:15:40Z' progress=0.999981 cache=35.6MiB(262972txo) warning='64 of last 100 blocks have unexpected version'
2020-04-19T14:59:18Z UpdateTip: new best=00000000000000000005c9bb64ec93eaf645a027ee0c3e2c5e0653a374a5c782 height=626708 version=0x20000000 log2_work=91.873452 tx=522197418 date='2020-04-19T14:16:19Z' progress=0.999981 cache=36.3MiB(268132txo) warning='64 of last 100 blocks have unexpected version'
2020-04-19T14:59:19Z UpdateTip: new best=0000000000000000000ffd6e3f9cd137309333609a60045e0a27e18a2ad38947 height=626709 version=0x20000000 log2_work=91.873472 tx=522200472 date='2020-04-19T14:49:32Z' progress=0.999996 cache=37.2MiB(275481txo) warning='63 of last 100 blocks have unexpected version'
2020-04-19T15:00:46Z UpdateTip: new best=0000000000000000000ec003631af9681a550b0fa08cfbff8aef4832e51a63e4 height=626710 version=0x27ffe000 log2_work=91.873492 tx=522203095 date='2020-04-19T15:00:22Z' progress=1.000000 cache=38.0MiB(282765txo) warning='63 of last 100 blocks have unexpected version'
2020-04-19T14:59:15Z UpdateTip: new best=000000000000000000058a121d528381db4b076ef68c30b769066f92bab1cd77 height=626706 version=0x20400000 log2_work=91.873412 tx=522195769 date='2020-04-19T14:14:27Z' progress=0.999981 cache=34.9MiB(256790txo) warning='65 of last 100 blocks have unexpected version'
2020-04-19T14:59:16Z UpdateTip: new best=0000000000000000000f07e447142f811d24c5c1784b23661ea28f2fe3ffcecc height=626707 version=0x20000000 log2_work=91.873432 tx=522197017 date='2020-04-19T14:15:40Z' progress=0.999981 cache=35.6MiB(262972txo) warning='64 of last 100 blocks have unexpected version'
2020-04-19T14:59:18Z UpdateTip: new best=00000000000000000005c9bb64ec93eaf645a027ee0c3e2c5e0653a374a5c782 height=626708 version=0x20000000 log2_work=91.873452 tx=522197418 date='2020-04-19T14:16:19Z' progress=0.999981 cache=36.3MiB(268132txo) warning='64 of last 100 blocks have unexpected version'
2020-04-19T14:59:19Z UpdateTip: new best=0000000000000000000ffd6e3f9cd137309333609a60045e0a27e18a2ad38947 height=626709 version=0x20000000 log2_work=91.873472 tx=522200472 date='2020-04-19T14:49:32Z' progress=0.999996 cache=37.2MiB(275481txo) warning='63 of last 100 blocks have unexpected version'
2020-04-19T15:00:46Z UpdateTip: new best=0000000000000000000ec003631af9681a550b0fa08cfbff8aef4832e51a63e4 height=626710 version=0x27ffe000 log2_work=91.873492 tx=522203095 date='2020-04-19T15:00:22Z' progress=1.000000 cache=38.0MiB(282765txo) warning='63 of last 100 blocks have unexpected version'
