[Pacemaker] DRBD < LVM < EXT4 < NFS performance

[Christoph Bartoschek]

Raoul Bhatia [IPAX] wrote:

> i haven't seen such issue during my current tests.
> 
>> Is ext4 unsuitable for such a setup? Or is the linux nfs3 implementation
>> broken? Are buffers too large such that one has too wait too long for a
>> flush?
> 
> Maybe I'll have the time to switch form xfs to ext4 and retest
> during the next couple of days. But I cannot guarantee anything.
> 
> Maybe you could try switching to XFS instead?

Thanks for the numbers. I just see that a local dd on the server also 
achieves up to 450 MBytes/s. So it seems to be NFS related.

Christoph