is there a way to limit the size of the locally downloaded blockchain?

Start monerod with --prune-blockchain. Ideally from the start, or near the start.

Run monero-blockchain-prune-known-spent-data (different thing, and it only gets you 200 MB or so IIRC).

Maybe mdb_copy will shave a few kB (but it'll increase soon enough as you get more blocks anyway).

Filesystem compression might work, though that'll likely slow things down massively, and you'd need to make sure this still works with mmap.

its currently at 90gb with 481336 blocks remaining

i put a guide together for pruning with the Monero GUI (it basically says delete everything and start from scratch to benefit from pruning) :(

Why delete? If you already have a fully synched chain, you should run monero-blockchain-prune instead

The only reason not to do that is if you don't have enough storage space to keep the new pruned copy of the chain (~50GB)

s/synched/synced/

usually the motivation for someone to want to prune a blockchain is because their hard drive is full (after the fact) - so they ask 'how to prune'? rather than running the prune tool (which takes almost / if not exactly the same time as starting from scratch and leaves the large blockchain behind still, (so they still see 90GB taken up) ~ and if you run the prune tool - it just adds another 50GB to your hard drive, and you still have to

delete the old one =(

In theory, it should be possible to get lmdb to move pages to low fee pages, resize the map, then truncate the underlying file...

I don't think lmdb can be asked that though. But if it could, it wuld allow in place pruning while shrinking the file.

low fee pages?

Low free pages, sorry.

Low as in low file offset.

none of what you described is necessary

pages go onto the freelist whenever a COW occurs.

pages are reused from the freelist for new writes

But if your map is 0..N..M, you delete page N, the map is still 0..M.

if all you're doing in a pruning op is deleting data, then more pages will be freed than consumed

doesn't really matter, does it? if your 150GB file fit on disk before, it still fits now

Yes, and those are still sitting in the mapped file. Not necessarily at the end.

Shrewd :P

But the context is doing this when the file reaches disk capacity.

(free capacity)

sure

anyway, LMDB never gives space back to the OS because DBs always grow. so it's wasted effort.

So if you don't shrink, you cvan't use the "free" space for other things. Which is annoying, fir 100 GB.

you can of course use mdb_copy -c to make a compacted copy, if you have the space for a copy

but that's just back to where this conv started...

Right. You end up resyncing, which is also wasted effort.

resyncing?

If you have, say, 30 GB left. You can't mdb_copy. So if you need 50 GB for other stuff, you have to resync to get back to 130 GB left.

Anyway, I'm not pushing for it. It's theoretically possible, but not available in practice, fair enough.

I guess. but that's just kicking the can down the road. you need to ensure you have sufficient space for the future growth of the blockchain

if someone is saying "hey, my blockchainDB is too big and I need space for these other things"

Technically true, but not very useful.

that's just stupid. they need more disk.

Says every software developer :D

And we end up with games taking 10 GB. OR whatever it is they take nowadyas.

we're pretty lightweight compared to a modern game

hundreds of GB

Well, there you go.

i was surprised by 'that' graph (which shows modern games space requirements

10GB ,,, its much worse ^^

1TB microSD cards are now less than $30 amazon.com/2tb-micro-sd-card/s?k=2tb+micro+sd+card

so I can't really sympathize with someone wanting to store blockchain plus other stuff on 1 drive

Without looking Path of Exile takes like 50GB (for the MPQ). Civ VI is like 30GB. Some XBox games are egregious and take like 150GB.

150GB for Monero Blockchain honestly isn't bad when a lot of laptops come with 500GB and go up to 2TB.

And you can pay like $5/mo for a VPS big enough to run a nodr just for personal use.

to sympathise with me, we must first enter a time machine and go back to the year quake2 was released

i believe a bitcoin node is over 200?300GB?

My first PC didn't have a hard drive. I used to save typed programs on cassette tape. :-P

4TB NVMe SSD for $600, 8TB for $1300

I've got a pair of 2TB in my laptop, pair of 4TB in my rockpro64

Bitcoin will have a harder time because their DB engine is a lot slower. at those sizes, good luck...

But BTC/BCH can prune spent outputs so easier to manage.

do the nodes do that automatically?

alphabay is #1 DNM again, monero-only

damn is alphabay still going

resurrected

how long ago?

#2 admin came back last year

oic

nice

since alphabay kicked off the monero pump of 2017, will be interesting to see if they have a similar impact on markets again

what to do if testnet node gets stuck during sync?

I am stuck at 522739

pop blocks?

Exit, restart with --log-level 2, check what error you get when trying to sync again, post error.

restarting fixed it

🤷‍♀️

wait maybe not....

I am waiting

Hey everyone. I submitted my first CCS proposal and looking for feedback. (I shared the link on the Matrix room and sharing it on the irc channel too)

Monerosigner a Monero fork of seedsigner (a DIY airgapped bitcoin hardware wallet built out of raspberry pi zero). The idea is having a hardware wallet that anybody can built out of commodity parts helps reduce attack surface of supply chain and privacy considerations of customer lists of hardware wallet vendors.

Thank you in advance

popped 10k blocks and stuck on block 522739 again

log-level 2 moneromooo pastebin.com/k6ttQVHa

nothing jumps out at me...

I just nuked testnet folder and going to start from scratch with seth as exclusive node

Why are you using testnet?

testing tings

I was in favor of just testing on mainnet

because mainnet node already synced

stagenet is recommended no?

y tho?

y everything monero so cornplicated?

researchers do cruel things on testnet too , they're big meanies

jwinterm: stagenet, Mochi102 knows

is this related to the testnet hardfork though?

ok

thx boys

<3

i remember devs needing to add peers and such? because of the hardfork .. im not sure

testing development = testnet

testing things on monero = stagenet

**testing monero development = yesynet

*testnet

whew

okiedokie

stagenet syncing

nice

if you need some coins I have lots

I'll sell you stagenet xmr at 1/2 the price of mainnet xmr jwinterm

How many do you need?

I feel like I should be able to mine some...

Well, why do that when you could just buy some?

You can, there is a faucet too.

Somewhere...

gracias

Current balance: 1109607 XMR

not bad

yeah, they have more than me

I only have like 7k sxmr

I gave my seed phrases to asymptotically and he never wiped me out of my sxmr either.