[Moosefs-users] how do you handle mfsmaster failover?

[Boyko Y. <b.y...@ex...>]

Hi list,

I'm wondering how are you guys handling mfs master failover? 

In my tests mfsmetalogger seems quite unreliable - 2 days of testing showed a few cases when mfsmetarestore is unable to restore the metadata.mfs datafile - getting different errors like Data mismatch, version mismatch, hole in change files (add more files) etc.

Running 3 different metadata backup loggers, master and chunk servers all running mfs-1.6.20-2 on centos 5.5 x86_64, filesystem type is ext3.

I'm aware that some of you are running huge clusters with terabytes of data - I'm wondering how do you trust your mfsmaster and am I the only one concerned with eventual data loss on mfsmaster failover, when mfsmetarestore does not properly restore the metadata.mfs file from changelogs?

Boyko