On Fri, 2005-10-07 at 10:54, Scot L. Harris wrote: > > > > I know the difference between the two but I am looking at LVM groups > > made from RAID1 (mdx) drives. I am assuming and hoping that the RAID > > will protect the LVM as I am not losing the drive but only a copy. > > That is my understanding. The raid portion will protect you from a > drive failure. The trick is to make sure you are alerted when there is > a problem and get the drive replaced. > > The only question I have in such a setup is how do you grow an LVM > volume if the space was not already part of the raid group previously > setup? Do the raid tools under linux allow you to grow a raid group by > adding a drive? I think what you do is build another RAID1 device out of two more disks, then add the raid device to the LVM and resize the filesystem to use the space. Does anyone have a real step-by-step to start an LVM on top of software raid, then expand it later? -- Les Mikesell lesmikesell@xxxxxxxxx
