On Feb 5, 2008 5:12 PM, Joseph L. Casale <jcasale at activenetwerx.com> wrote: > > > > > If I needed to remove a disc from a software mirror for a quick backup > before a test, how can I remove it cleanly so that it has a good copy of the > OS on it? If I use mdadm to fail then remove it, this would be done while > CentOS is running (It's a mirror of the system disc) and I suspect the data > on it would not be in a clean state? Don't "fail" the disk, just remove it physicaly or in the BIOS, that way it will be clean. Then if your test is successful, your disk will be re-syncronized as soon as you put it back. If your test fail you need to make your "saved" disk the good one. I things "md" choose the disk with the last time stamp as the "master" to replicate on the second one. Then boot on the "saved" one, before to reboot and sync both. You could also try to change the partition system ID of your partition(s) to something else than 8e, using fdisk. Regards will update the time stamp, and then will make the new > > > > Is there a way to say have it not involved in the mirror after the next boot > for instance? > > > > Thanks! > jlc > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > > -- Alain Spineux aspineux gmail com May the sources be with you