2009/3/27 RedShift <redshift at pandora.be> > Mogens Kjaer wrote: > > RedShift wrote: > > ... > >> Not only do you > >> have to execute 4 times as much commands, reconstruction of the 4 > >> arrays will take place in parallel leading to slow disk access during > >> reconstruction. > > > > Is this right? > > > > When I have replaced a disk and added several partitions > > to an array, the rebuild is done one partition at a time. > > > > The /proc/mdstat would say "delayed" on the partitiones > > waiting. > > > > Mogens > > I must be mistaken then, it's been a long time since I've used regular md > devices. > > I can confirm this and furthermore, the default sync max transfer rate is very low for modern disks, so unless you've increased it to speed up sync or you have a very heavy disk workload, it's probably not going to impact normal disk access that much... That said... I'd much prefer partitionable arrays from a management point of view... It's how all the hardware solutions work and they can't all be wrong ;) d -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20090327/732e5356/attachment-0003.html>