Minetest Forums

Pretty amazing tough!

Dragonop and I having some fun exploring a little while ago.

Do you load world from backup? Because my house was deleted and my mine not so deep as it must.

Yes. I believe three days worth of data were lost. I neglected to perform my regular 24 hour backups immediately before a series of lightning storms, all without the security of a battery backup, or even a grounded outlet. Ouch.

I need to correct everamzah. Only 2 days of data where lost.

Maybe you try mount in ram only dir /players and migrate from sqlite to leveldb, then if you pc shut down suddenly the database will not lost. But i don't know about speed work.

This is a good idea, and I only now realize that leveldb is faster than sqlite, and redis is faster than leveldb. I did try to make a leveldb world once but I got an error so didn't continue on. So can I ask: Do I only need to change world.mt backend to leveldb and then do --migrate leveldb?

Edit: Also, what about "speed work"? And, how does mounting players dir as tmpfs(?) work? Does it make things faster? Do I need to worry about it being tmpfs if the machine loses power?

You must edit world.mt AFTER migrate (in wiki writed nothing about changing world.mt on leveldb, so i think you don't need to edit world.mt), and don't use redis (it may freeze server after some time). About mount to ram, i writed in this topic link to manual, but you must change it if you mount only dir /players. If you don't used tmpfs why you lost database, database must save every some time (you can set it in minetest.conf in seconds - server_map_save_interval)?

I'll definitely look into it and do some experiments, and ultimately migrate to leveldb and look for any speed improvements. I'm worried my CPU will be taxed more than before, though. It's a pity about redis crashing, it's an attractive idea to offload the database to a secondary machine if it gives the machine running minetestserver more resources so it runs faster.

Edit: I've migrated the world backend from sqlite3 to leveldb, and mounted players dir as tmpfs. Hopefully it's smoother now, though I couldn't tell.

Edit2: The Minetest server listing is now showing Amhi with zero users when it actually has a dozen players connected. Also, it resets the uptime, even though minetestserver had never restarted. I'd never noticed this before switching to leveldb today. I'm hoping tonight/tomorrow when I backup/restart it'll magically stop doing that.

Well, maybe 35 slots for players was too much?
Btw, what actually happend? another storm? or it was just too much for the cpu?

Erm...

16:11:57: ERROR[main]: Access denied. Reason: Your client's version is not supported.
16:11:57: ERROR[main]: Server version is 0.4.12-dev,
16:11:57: ERROR[main]: server's PROTOCOL_VERSION (strict) is 26, client's PROTOCOL_VERSION is 13...24

Someone is using an old vertion of MT probably, the one in the Ubuntu repos is OLD...

benrob0329 wrote:Someone is using an old vertion of MT probably, the one in the Ubuntu repos is OLD...

What O.o

I mean that whoever is trying to connect to your server is using an older vertion of Minetest, so it doesnt work. The Minetest package in Ubuntu 14.04 is still on vertion 0.4.9 (i think) so that could be a problem.

It could also be that someone is trying to connect to your server from one of the illeagle copies (they dont put there source code out...) of MT found in the App Store and Play Store, which are generaly quite old too.

benrob0329 wrote:I mean that whoever is trying to connect to your server is using an older vertion of Minetest, so it doesnt work. The Minetest package in Ubuntu 14.04 is still on vertion 0.4.9 (i think) so that could be a problem.

It could also be that someone is trying to connect to your server from one of the illeagle copies (they dont put there source code out...) of MT found in the App Store and Play Store, which are generaly quite old too.

This is me trying to connect to Amhi :P

Looks like an admin may have had some fun XD

This reminds me of DOA, except more organized. Oh, and if you haven't heard of DOA, you probably haven't scrolled down the server list randomly a year ago.

Recently the server has crashed twice in a way that I have to hard reset the machine to restart it. Both times the server was down for a number of hours before I noticed.

I hadn't noticed the lockup before starting to use a CRT monitor on the machine, and I've now unplugged it in the hopes that it's related. The server log shows only ^@^@^@^@ repeated a couple hundred times.

well, the server just died with a crash

I had to turn on ignore_world_load_errors because the thing was crashing on map load errors. Yikes!

When I try to connect to the server I just get a gray screen with the debug information, the map and hud don't load. All other servers work fine.

My account here is "beha".

shacknetisp wrote:When I try to connect to the server I just get a gray screen with the debug information, the map and hud don't load. All other servers work fine.

My account here is "beha".

This is a known bug for people with slow connection, or a high ping. Try deleting your "cache" folder on the minetest folder.

I'm still getting it after deleting cache.