Sandeep, Thanks for the reply. I got DTK going, it was straight-forward as we have a pretty robust PXE setup from the ROCKS clustering tool. I should have investigated booting DTK before, it will be useful for getting brand new nodes into our cluster. We have been using syscfg for non-destructive things during our node installs in ROCKS.
I did find that I can accomplish the disk reconfiguration that I want using omconfig from our installed systems. Of course a reinstall is needed after doing this. The systems in question have 2 drives and SAS6i controllers. To switch from RAID to JBOD mode give this command: omconfig storage controller action=resetconfig controller=0 To put the drives into a RAID0 do this (must start from JBOD): omconfig storage controller action=createvdisk controller=0 raid=r0 adisk=0:0:0,0:0:1 size=max Need to power cycle the nodes using IPMI after doing this as no more commands can be run (not even "shutdown"). But they are ready to PXE boot the ROCKS installer and get rebuilt using the new drive arrangement. -Tom [email protected] wrote: > Hello Tom > > Sorry for the late reply. > Looks like you want to repurpose or reconfig the OS install on many > servers. > The Dell deployment toolkit is a solution that you could use. > It is a bootable ISO, that has command line utils to create/delete > virtual disks (raidcfg). > Configure BIOS settings etc.. > Here is a link that you could use to download. > http://support.us.dell.com/support/downloads/format.aspx?releaseid=R2404 > 91&c=us&l=en&cs=&s=gen > You might have to do some scripting. > You can pass options at boot to the location of your startup script via > nfs tftp etc.. > > Regards, > Sandeep. > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Tom Rockwell > Sent: Tuesday, November 24, 2009 8:27 AM > To: linux-poweredge-Lists > Subject: reconfigure boot / root partition vdisk using omconfig? > > Hi, > > I have a stack of r610s that have a Redhat-ish 5.3 OS installed with > OMSA. They have two independent drives (sda, sdb). I want to make each > > system have either a RAID0 or concatenated drive config on the SAS6i > card (e.g. one vdisk using the full space). I know that after this > operation the systems will need to be reinstalled. > > The question is, can I get the new vdisk config setup using OMSA from > within the existing OS install? (I'd just send the command via ssh to > each system.) The vdisk needs to be ready to go after this, so that the > > systems will be ready to reinstall using a PXE boot installations system > > (ROCKS). > > I did find that I could delete the existing vdisk config from OMSA, but > then the system is nuked and the new vdisk config can't be setup. (Had > to use SAS6i console to setup vdisk and then install OS via > PXE/network.) > > Maybe if I want to automate this vdisk reconfig, I need to use and > NFSroot or otherwise get OMSA running from something other than the > vdisk I want to redo. But I'm wondering if there is some trick that > could make this work remotely? Seems like OMSA can send _one_ complete > command to the controller, if it was the right command... > > (I'm also considering just using software raid or LVM in this instance, > but we know that we also will want to remove the RAID0 config on an even > > larger stack of nodes in the future, so a solution to the controller > config problem would be helpful.) > > Thanks, > Tom Rockwell > Michigan State U. > > _______________________________________________ > Linux-PowerEdge mailing list > [email protected] > https://lists.us.dell.com/mailman/listinfo/linux-poweredge > Please read the FAQ at http://lists.us.dell.com/faq > _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
