OK. That, as far as I know, is not sufficient. DMRAID allows the kernel to set up raid devices based on the metadata that is on the drives, but that metadata will not exist on the new drive, you have to add it first (in the BIOS, most likely). I would recommend rebooting and entering the BIOS's raid management tool, and adding the new drive to the array there. It might let you do it without rebuilding the array, but it might not. I'm pretty sure that "dmraid -R" just triggers a rebuild procedure -- in your case (ie with RAID1), it re-synchronizes the two drives. But AFAIK it won't set up a blank drive, ie, it won't create the proper metadata on an uninitialized drive. On 01/12/10 12:03 PM, Aaron Hanson wrote: > >> -----Original Message----- >> From: ataraid-list-bounces@xxxxxxxxxx [mailto:ataraid-list- >> bounces@xxxxxxxxxx] On Behalf Of Ian Stakenvicius, Aerobiology Research >> Sent: Wednesday, December 01, 2010 6:33 AM >> To: ATARAID (eg, Promise Fasttrak, Highpoint 370) related discussions >> Subject: Re: replace one disk in isw RAID1 array >> >> How did you add the new blank disk to the array? ie, did you use the Raid >> Setup in the BIOS to mark the disk as part of the array? Or just use dmraid >> commands? > [Aaron Hanson] > I think I covered that. I simply did a physical disk replacement with power off. After powering the system back on, I tried to use 'dmraid -R <new device>' as an attempt to add the new device to the array. > > But I'm new to ataraid; I don't really know that I'm using the correct procedure. I'm looking for someone on this list actually knows the typical and correct way to replace a disk in an ataraid array. I presume there is the simple step of physically replacing the bad disk with a good one, then some 'dmraid' commands. But can't seem to find the right 'dmraid' command(s). > > Thanks for your response. > > -Aaron > > _______________________________________________ > Ataraid-list mailing list > Ataraid-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/ataraid-list _______________________________________________ Ataraid-list mailing list Ataraid-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ataraid-list
