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1  Bitcoin / Bitcoin Discussion / Re: Where To Spen Bitcoins? Full List. on: September 10, 2019, 04:58:38 AM
You can also find brick and mortars that take Bitcoin Cash here: https://marcocoino.bitcoin.com
2  Bitcoin / Bitcoin Technical Support / Re: Bitcoind stops while syncing - "Failed to open mempool file from disk" on: February 15, 2019, 07:12:13 AM
Quote from: ETFbitcoin on February 14, 2019, 05:20:31 PM
It's very slow IMO, but i guess it's better than can't sync properly.

Depending on percentage free RAM, you could increase dbcache or/and maxsigcachesize number slightly (between 5-25%) if you want faster sync and prepare to take risks. If you have PC/notebook, you could sync from it and on Pi you just need to wait for block verification.


Indeed, 17% after 2 days. I increased -dbcache by 25% but RAM went over 95%.
I will be playing with the arguments to reach a faster stable syncing.
3  Bitcoin / Bitcoin Technical Support / Re: Bitcoind stops while syncing - "Failed to open mempool file from disk" on: February 14, 2019, 07:18:32 AM
So it has been syncing overnight and I am now at 11%.

Bitcoind RAM usage remains at about 50% (500MB). Looks like it's working! Thank you for the support.  Wink
4  Bitcoin / Bitcoin Technical Support / Re: Bitcoind stops while syncing - "Failed to open mempool file from disk" on: February 13, 2019, 07:38:27 PM
Okay so I am giving it another try with the following parameters:

Code:
bitcoind -daemon -maxmempool=100 -dbcache=200 -maxsigcachesize=4

I tried with -dbcache set to 50 but the verification progress (syncing) was way too slow!

It seems to be syncing a bit slower than before with the current parameters but let's hope it keeps the RAM usage below 80%.
5  Bitcoin / Bitcoin Technical Support / Re: Bitcoind stops while syncing - "Failed to open mempool file from disk" on: February 11, 2019, 04:57:54 AM
Quote from: darosior on February 10, 2019, 09:46:28 PM
Since v0.6, C-Lightning does support running on top of pruned nodes, and the doc I provided is not only for pruned nodes (for instance just lower the `dbcache` would reduce the RAM usage).

Oh that’s interesting! I will look into it, thank you.
6  Bitcoin / Bitcoin Technical Support / Re: Bitcoind stops while syncing - "Failed to open mempool file from disk" on: February 10, 2019, 08:51:48 PM
Quote from: darosior on February 10, 2019, 08:22:33 PM
You might want to take a look to https://bitcoin.org/en/full-node#reduce-storage (there are options to reduce traffic too).

I do need to run an unpruned node as my goal is to run a lightning node  Lips sealed
7  Bitcoin / Bitcoin Technical Support / Re: Bitcoind stops while syncing - "Failed to open mempool file from disk" on: February 10, 2019, 06:48:30 PM
It stopped with the following at the end of `debug.log`:

---
2019-02-10T15:18:11Z UpdateTip: new best=00000000000000249597632a2fe08578cd1d2c0f620342ca91c3611786fe464f height=232591 version=0x00000002 log2_work=69.838772 tx=16550595 date='2013-04-22T14:31:02Z' progress=0.044502 cache=597.4MiB(5216340txo)
2019-02-10T15:18:12Z Error: Out of memory. Terminating.
---

I rebooted the raspi and it went straight to recovery mode... I will start from scratch again and do the hardware checks mentioned above.
8  Bitcoin / Bitcoin Technical Support / Re: Bitcoind stops while syncing - "Failed to open mempool file from disk" on: February 10, 2019, 02:31:41 PM
Thank you! I didn't specify such thing.

It's now re-syncing (about 2%). Let's see if it goes through.
9  Bitcoin / Bitcoin Technical Support / Re: Bitcoind stops while syncing - "Failed to open mempool file from disk" on: February 10, 2019, 01:44:57 PM
Quote from: KingZee on February 10, 2019, 10:46:02 AM
delete the blocks and chainstate folders and restart bitcoind.

It restarted from the first block already, but i'm trying this one more time.

@darosior I changed ownership to `pi` and chmod-ed the hard drive mount. Does bitcoind use a specific user that I need to change to?

Also, note that I didn't specify a path to save the block chain to bitcoind - instead, the folder .bitcoin links to my drive.
10  Bitcoin / Bitcoin Technical Support / Bitcoind stops while syncing - "Failed to open mempool file from disk" on: February 10, 2019, 06:14:41 AM
I installed Bitcoin Core on a Raspberry Pi and tried to sync the block chain using bitcoind.
The data is written on an external hard drive (1TB) mounted on the machine.

After I run the `bitcoind -daemon` command, the block chain starts syncing, but after a few hours it stops.
This is what I have at the end of the debug.log file:

----
2019-02-10T05:41:04Z UpdateTip: new best=00000000727339b1f121c82ad73e522d8e83d7ed4b1b3473aa10f26029f2b046 height=12774 version=0x00000001 log2_work=45.641058 tx=12882 date='2009-04-30T12:58:37Z' progress=0.000035 cache=2.4MiB(12863txo)
2019-02-10T05:41:04Z Failed to open mempool file from disk. Continuing anyway.
2019-02-10T05:41:04Z tor: Thread interrupt
2019-02-10T05:41:04Z Shutdown: In progress...
2019-02-10T05:41:04Z addcon thread exit
2019-02-10T05:41:04Z opencon thread exit
2019-02-10T05:41:04Z torcontrol thread exit
2019-02-10T05:41:04Z net thread exit
2019-02-10T05:41:04Z msghand thread exit
2019-02-10T05:41:04Z scheduler thread interrupt
2019-02-10T05:41:06Z [default wallet] Releasing wallet
2019-02-10T05:41:06Z Shutdown: done
----

Does anyone have an idea? Thank you!
11  Bitcoin / Development & Technical Discussion / Why not increase the block size? on: November 01, 2018, 09:12:02 AM
This is serious. Convince me please.
12  Other / Meta / Re: Stake your Bitcoin address here on: September 20, 2018, 09:03:36 AM
Quote from: k0er on September 20, 2018, 07:09:27 AM
Quote from: merc1er on September 20, 2018, 02:15:54 AM
My PGP key:


https://mercier.link/pgp
Code:
-----BEGIN PGP PUBLIC KEY BLOCK-----

mQENBFqtOkcBCADT2ByBGE/E+wsmSyHLWT1nkyF1eYoCTvRuWQSWjKBaCJdTrmxG
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U9c52kR+zVg8/QUCWq06RwIbAwUJA8JnAAULCQgHAgYVCgkICwIEFgIDAQIeAQIX
gAAKCRA52kR+zVg8/bdSB/9WAO1Aqr1Rm9Um1UbESJPYptSWDTxXyr014xX6NcE8
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XocXX8BL5sP53nm0e0sZDjm3KYU4tDg0VSO4vDJW5OQq2+lRAR8slB1lFf2nViW/
8ny44ddcyUDPpj9gELEdvZzpCnR6Y3W+p2fSC2vLpoqAzgmqvWSSaEzt4W6BeTzF
H+NpRXqlnR0eUCQNABEBAAGJATwEGAEIACYWIQTx5X+BEzfkOnYRU9c52kR+zVg8
/QUCWq06RwIbDAUJA8JnAAAKCRA52kR+zVg8/dgxB/4zx2p1Bb7xnxtawNnrwect
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xdv776/ps4dMeQWfK4e11ok1jLP8LhHEU57ABUCJxIzI85w2iaqxGge3169+u3TR
IQ71gg901uyL7cJpOzy9WZF3P9Ual2/LJHHlZxZCj8UMb17orG3a7Ddl62v3WZu5
6pw6V4P76XvzfTJ200lDI/ZmxIyzD5vtofKQN9yMmacK4BVM1oA1SQxnSq0HRCgb
cU7U67pnkjZfFyiwKjaoIFd4lK+ouSLVpVSlbXyyXr3SWMqZY8h4UqDQanw+InpI
=LMGP
-----END PGP PUBLIC KEY BLOCK-----

PGP key without BTC address? look at here

Oh right, moving post right now.
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