News

[Discuss] Rollback to sunday

Tom tom at lemuria.org
Wed Apr 4 13:47:01 CEST 2007


Due to a massive problem with the disk cache on the battlemaster.org 
server, there will be a massive rollback to sunday morning status.

Apparently a disk in the RAID setup failed in some odd way I haven't yet 
been able to decipher. All changes were cached on the second disk, but 
never applied to the actual database or filesystem. All sorts of weird 
failures on the backend side kept me wondering for the past few days 
what the heck was going on.

Since at the current rate of incoming data, the cache capacity would be 
filled up by this evening, there is not enough time left to properly 
address the problem. I have no idea what would happen when the cache 
bursts, and I don't intend to find out. Therefore, I will shut the 
machine down, revive the failed drive, and power the machine up again. 
Which means that one of two things is going to happen:

a) We find ourselves in the state of sunday, as if nothing inbetween 
happened. For all intents and purposes, it'll be sunday.

b) Everything that's in the cache (on the _second_ drive, remember!) is 
properly applied to the database and filesystem, which means everything 
will happen _again_. Like in Groundhog Day, you'll get all messages 
again, both in-game and on the mailing lists. All battles will be fought 
again, with the same results. Everything will happen a second time, but 
after that we're in the clear.

My apologies in advance for any inconveniences, especially those 
subscribed to the unmoderated mailing list will probably be hit by a 
large amount of duplicate messages. Don't bother to unsubscribe to avoid 
it - since in the cached data you are subscribed, changing that now 
wouldn't change a thing.



More information about the Discuss mailing list