On Wed, 2019-02-27 at 15:23 +0000, Gary Stainburn wrote: > On Wednesday 27 February 2019 15:14:33 Patrick O'Callaghan wrote: > > Given that it's RAID1 (i.e. mirroring) can't you just use dd to copy > > all of sdb to sda? > > > > poc > > I am already doing that, but using clonezilla instead of DD. I should end up > with the same result. However, I did that so I had a safe copy. > > It's taken 4 1/2 hours so far, and hasn't finished yet. If I do the same > again to have a working copy it'll be tomorrow before I get it working. > > The other thing I wondered is whether that would actually work. Doesn't mdadm > store unit ID's to prevent drives changing sequence when booting up? Wouldn't > it just see the same drive twice? > > I was hoping I could just get the system so I could boot from sdb, and then > get it to rebuild the RAID while the server is up and available.
Sorry, my only experience is with a NAS with RAID1 which supports hot- plugging. I've had to replace drives twice and it has Just Worked (i.e. plug in a fresh drive and it configures itself). The NAS is running an old copy of Debian and does use mdadm. I know it has an nvram for configuration settings so maybe the unit IDs are stored there, but beyond that I couldn't say. poc _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org
