Bart Schaefer wrote: > We have a CentOS 3 server with about 300GB of data on an ext2 > filesystem that we need to mirror onto a new drive, which we're then > going to pull out and put into a second server. A straight > disk-to-disk copy (with rsync, tar, or "cp -a" doesn't much matter) > manages about 75MB per minute, which would take almost three days, and > the system gets very sluggish while such a copy is going on, so we > can't afford to just let it run. > > Is it possible, without loss of data, to convert the existing ext2 > filesystem into a mirrored software RAID, then add the new drive as a > second device and let rebuilding the RAID take care of making the > copy? Even if this took more time, we've had good overall system > performance with software RAIDs rebuilding in the background before, > so it could run as long as necessary. We'd then need to be able to > remove the second device from the RAID and either convert it back into > a plain ext2 or put it into a similar software RAID in the destination > machine. > > Is this possible? Is there another plan that would make more sense? > > Thanks in advance for suggestions. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > Does rsync with the bandwidth limiting features still slow the system unacceptably? Just a thought, MrKiwi,