How can I always have a second copy of my Bitcoin Core data (blocks, indexes, chain state) on an external drive?
The drive will only be connected to the node at times when it’s not connected to separate offline workstation.
Ideally I would need not to stop bitcoind on the node at any point. So far I’ve been using this command:
rsync -P -h -a --delete /home/satoshi/.bitcoin/ /mnt/bitcoin-copy/
But it can take a long time specially after the drive has been disconnected for a while. More importantly the chain state takes too long to sync and ends up being corrupted.
Stopping the node during the copying fixes that issue but I’d like a more bullet-proof or even automated solution if possible. Is RAID 1 even an option in this scenario?
Thanks in advance!
