On 9/28/24 9:18 AM, Dr. Nikolaus Klepp via tde-users wrote: > I intend to oject: filesystem based backup systems do not have the risk > of saving a corrupt filesystems as blockbased backup systems have when > done on a mountd filesystem. The filesystem (as long as it is sane) is > always in a cosistent state, while the blockdevice (as long as mounted) > is not. That's why no sane person uses dump/restore anymore. > > As long as you do not run "apt dist-upgrade" at the same time as you > rsync you are fine (in respect of bootable backup). Nothing changes > kernel + grub + modules + /bin ... under normal conditions so your copy > will be able to boot - that is if your got UUID and GRUB/EFI stuff right > in the first place. What gets busted are logfiles, open datanbases, > files that are just been written. So if you use some brain cells you can > shut down whatever is not essential, close your kmail + editors + firefox > and just make the sync. Snapshots (ZFS) would be better, but you take > what you get :) You're probably right; I've never backed up a running boot partition with rsync. But if I were going to depend on it, I'd want to test it a time or two first. On 9/28/24 9:51 AM, dep via tde-users wrote: > The purpose, besides the obvious, is to keep the second drive updated as > to security and other updates and any additional software I might > install. If there were a way to do the usual update-upgrade to a > non-booted drive, and to install applications to the second drive, that > would be fine. Is it really necessary to backup after every single change? Should you ever need to use the backup, updates and other software can always be quickly & easily reinstalled. User configuration settings will still be in /home, since it's on a separate partition. So maybe a few backups a year would be sufficient. > A RAID 1 seemed a good idea, but I believe that this cannot be added to > a drive after the fact -- both must be blank to start with. And I think > the speed would then be determined, at least to some extent, by the > slower drive. I know very little about RAID, but would it be possible to backup the existing drive, make the RAID 1, then restore the backup to it? Or would that not work for some reason? re: speed, is it possible to make the RAID default to the faster drive, then update the slower drive in the background? Or maybe it does that anyway? -- For PGP key, search on the PGP Global Directory. ____________________________________________________ tde-users mailing list -- users@xxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxx Web mail archive available at https://mail.trinitydesktop.org/mailman3/hyperkitty/list/users@xxxxxxxxxxxxxxxxxx
