[Info-vax] Somewhat levels up to not port outside VMS (letter from Wyoming)

[Neil Rieck]

On Monday, December 17, 2018 at 10:19:54 AM UTC-5, Scott Dorsey wrote:
> Neil Rieck  <n.rieck at sympatico.ca> wrote:
> >First off, it would be nice to do a snapshot once a week just incase someon=
> >e installs or upgrades something so we can go revert back. Perhaps its just=
> > me but I have never been able to fully rollback CentOS-7 so any tips are d=
> >efinitely welcome.
> 
> Try xfs.  The snapshotting isn't perfect, but you can do it, and it's already
> supported under Centos.
> 
> >Secondly, I've got two HP platforms (DL385) running CentOS-7 with out any h=
> >/w RAID or s/w mirroring. These systems are one drive away from failure so =
> >receiving any tips on how to move the system disks to a slightly newer DL38=
> >5 with h/w RAID would also be welcome.
> 
> Depends on what you want.  Might be easiest to reinstall the OS on the new
> machine, then just dd or dump/restore everything from one machine to the 
> other.  Of course, then you have to reinstall everything else that goes on
> the OS disk, which may be problematic.  
> 
> If the drives are interchangeable, you can pull the drives out of one machine,
> put them into the other machine, then boot and have an identical config.
> Then it's just a matter of migrating to a raid on the same system.  But, to 
> do this you need enough drive bays for both the raid and the original disks.
> 
> >Everyone reading this already knows that the Linux system disks are partiti=
> >oned so migrating is a little harder. Well, I suppose I could always boot a=
> > third disk in single user mode; create new partitions on the new RAID volu=
> >me to match the old system disk; then copy the disk partition-by-partition.=
> > I was just wondering if there is a less error-prone method.
> 
> If the drive is identical you can just dd the raw drive over to a new raw
> drive.  The partition table and the grub stuff all comes along for free
> although you'll need to install a new boot sector.
> 
> Don't you have Dawn Whiteside up there?  Pay her to do it.
> --scott
> 
> -- 
> "C'est un Nagra. C'est suisse, et tres, tres precis."

Thanks for the fast response. 

p.s. who is Dawn Whiteside ?

Neil Rieck