skumflum wrote:
MammaGutt wrote:
7+1 and 14+2 has the same RAID overhead so final state will require the same. However it will require some extra space during the tunesys.
Can I calculate the requirement during the tunesys. I have used 80% of the capacity and it would be a bad day at work if it ran full
I've never been able to do that. When you start tunesys it will compact some for each iteration but from my experience it will grow new LDs faster than compacting the old ones (expect the final few steps). What I've ended up doing is either tuning individual LDs (showld -d shows which are running which RAID level and set size) or do tunesys, stop it when I reach 95%, compact CPG, restart tunesys, stop it at 95%, compact CPG and keep on doing that until it's done.