Topic: how is a backup of the blockchain done? (Read 634 times)

thanks for reply. I managed to get the backup i done working and synced in 5 mins, I deleted the peers.dat and debug.log as per advice from another member.

thanks

Recent blocks are far larger and contain more transactions than the early ones, your client will likely crawl back to this slow speed over time.

hi all,

I am just wondering what is the way to go about backing up the blockchain?

everything has been going great for me until i upgraded to 0.8.5

prior to my upgrade I backed up the whole bitcoin folder in the hidden \appdata directory, uninstalled 0.8.1, installed 0.8.5 and then copied over all the files that i had backed up over, i then used the -rescan command.

bitcoin=qt loaded up but my blockchain is 9 days out of date, so i leave it running only to come back and see it still stuck on 9 days sync, its processing about 1 block every 1-2 mins, I initially thought what the hell something up there so i went through the whole checking firewalls,connections to nodes etc, everything checks out ok.

so i think then maybe its just the network so i leave it running for a few more hours, still wont sync, or at the best at a horrendus speed of 3 every 5 mins.

i then deleted everything in the \appdata and let bitcoin create everything again, blockchain is now downloading at the speed it should be processing about 1000\min.

so I would like to hear from others how they backup the chain and restore it when a new version of bitcoin-qt comes out.

does the blockchain have to be re-downloaded in full at every version change which you cant use any sort of previous backup of it ?

thanks