said dep via tde-users: | said Dan Youngquist via tde-users: | | The problem with using rsync to back up a mounted boot partition is, | | it's not instant. So while rsync is backing up one part, some other | | part is probably being changed. So if you're lucky, you might end up | | with a functional bootable backup, but you'll have some unknown bit(s) | | of corruption that may or may not be fatal. | | Maybe it would help if I described the goal I'm trying to achieve. | | It is to run an SSD boot, while keeping a conventional hard drive that | is identical to the SSD and on the GRUB menu to use if the SSD fails. | Not inlike a RAID 1, but with a couple of differences: the HD copy would | not be running all the time, and would not automatically switch over in | case of reboot. Oops. Meant SSD failure, not reboot. | 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. | | I'd just as soon not have to boot from a USB drive every time I wanted | to sync the drives. | | And if it is not perpetual and automatic, something I could do manually, | say once a week, preferably a little more elegant than booting to the | second drive and doing the update/upgrade there, plus adding anything | new I've installed. | | 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. | | | If you want to get a good bootable backup, you'd have to boot from | | something else before backing up. Then, if you want it to be bootable | | should you ever have to restore and use it, fsarchiver would be a | | better bet than rsync. An image backup with dd would also work, but | | the boot partition would have to be smaller or equal to the backup | | location. | | But dd would also result in a corrupt volume for the same reason rsync | would, no? Or at least suffer from the shortcoming that neither drive | should be mounted at the time. | -- | dep | | Pictures: http://www.ipernity.com/doc/depscribe/album | Column: https://ofb.biz/author/dep/ | | ____________________________________________________ | 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@trinityde |sktop.org -- dep Pictures: http://www.ipernity.com/doc/depscribe/album Column: https://ofb.biz/author/dep/ ____________________________________________________ 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
