Re: [ceph-users] Is it possible to recover from block.db failure?

2017-10-19 Thread Wido den Hollander
> Op 19 oktober 2017 om 16:47 schreef Caspar Smit : > > > Hi David, > > Thank you for your answer, but wouldn't scrub (deep-scrub) handle > that? It will flag the unflushed journal pg's as inconsistent and you > would have to repair the pg's. Or am i overlooking something here? The > official b

Re: [ceph-users] Is it possible to recover from block.db failure?

2017-10-19 Thread Caspar Smit
Hi David, Thank you for your answer, but wouldn't scrub (deep-scrub) handle that? It will flag the unflushed journal pg's as inconsistent and you would have to repair the pg's. Or am i overlooking something here? The official blog doesn't state anything about this method being a bad idea. Caspar

Re: [ceph-users] Is it possible to recover from block.db failure?

2017-10-19 Thread David Turner
I'm speaking to the method in general and don't know the specifics of bluestore. Recovering from a failed journal in this way is only a good idea if you were able to flush the journal before making a new one. If the journal failed during operation and you couldn't cleanly flush the journal, then

[ceph-users] Is it possible to recover from block.db failure?

2017-10-19 Thread Caspar Smit
Hi all, I'm testing some scenario's with the new Ceph luminous/bluestore combination. I've created a demo setup with 3 nodes (each has 10 HDD's and 2 SSD's) So i created 10 BlueStore OSD's with a seperate 20GB block.db on the SSD's (5 HDD's per block.db SSD). I'm testing a failure of one of thos