Hi,
On 12/10/2009 10:05 PM, Jakov Sosic wrote:
On Thu, 2009-12-10 at 19:11 +0100, Lars Ellenberg wrote:
exactly same hardware?
yes
exactly same kernel and stuff?
CentOS 5.4, I really look after details, and 'rpm -qa | sort' give me
exactly the same output on both nodes, config files are also same,
everything is OK.
I tried reversing roles, and when secondary becomes primary, then the IO
load reverses too.
I found on the internet that 3ware controllers have issues on Linux, and
I have 3ware controller... So maybe that is the part of problem...
Yes, they really suck, use areca raid controllers, and you will see what
it's a real hardware RAID.
(Yes, much better then software raid and 3ware controllers)
io scheduler? -> use deadline.
I'm using it... I know about kernel threads problem with CFQ.
otherwise: we sell "DRBD Healthchecks" ;)
I'm just a contractor too, but I think that the owners will buy FC
storage and get on without cheap JBODs...
--
Igor Neves<[email protected]>
3GNTW - Tecnologias de Informação, Lda
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