I have a BL460c blade running RHEL 4u7 connected to an EVA8100. Currently I have been using a single LUN but this is now proving inadequate and I need to allocate additional space.
The options available are to increase the existing size of the disk on the EVA or adding another disk onto the EVA for use by this server. Thereafter I could either add it to the existing VG or create a new one.
My first question relates to which is the best option and why? Obviously adding new disk on a seperate VG is the least risky but some sagely advice would be appreciated.
My second question, if I do add an additional disk is there a way of getting RHEL to recognize the disk without rebooting?
These systems, whether they run HP-UX or Linux are notorious for having problems recognizing space increases on existing LUNS.
I've struggled with this issue enough times, so learn from my pain.
SEP
Steven E Protter Owner of ISN Corporation http://isnamerica.com http://hpuxconsulting.com Sponsor: http://hpux.ws Twitter: http://twitter.com/hpuxlinux Founder http://newdatacloud.com
Hi friend; Itâ s preferable to add another disk via another controller of EVA, because these methods increase the performance of read/write on those LUN. Good luck
Stephen I agree with the increasing disk sizes as I have been burned on HP-UX too, but there was always hope that it would work. But adding another LUN seems the best option.
Mohamed I am using the multipath drivers already, however since this is going to be for cvs and subversion performance is not an issue here.
