Re: root backup-reformat-restore

[Hugo Mills <hugo@carfax.org.uk>]

[-- Attachment #1: Type: text/plain, Size: 1522 bytes --]

On Fri, Nov 18, 2016 at 04:06:22AM +0200, Marcus Sundman wrote:
> On 18.11.2016 02:52, Hugo Mills wrote:
> >On Fri, Nov 18, 2016 at 02:38:25AM +0200, Marcus Sundman wrote:
> >>The FAQ says that "the best solution for small devices (under about
> >>16 GB) is to reformat the FS with the --mixed option to mkfs.btrfs".
> >>
> >>OK. Does anyone have any good suggestions for doing that with an
> >>existing / partition (which has special files and whatnot)?
> >>
> >>I assume a backup-restore cycle is needed, but with which program(s)?
> >  - If you don't have (or don't care about) any snapshots, then
> >     - if you can mount both the old and the new FS at the same time
> >        - mv
> 
> It's the same partition, so I probably won't have the new FS there
> at the same time.
> 
> >     - else, if you want to replace the old FS with the new
> >        - tar to a file elsewhere, and untar later
> 
> Can tar really preserve all special files' attributes? (I have
> separate partitions for /boot and /home, but the rest is in /)

   Yes, I've used it for moving / to a different machine before. Take
a look through the options and pick all the ones that look like
they're dealing with attributes. :)

   Hugo.

-- 
Hugo Mills             | Anyone who claims their cryptographic protocol is
hugo@... carfax.org.uk | secure is either a genius or a fool. Given the
http://carfax.org.uk/  | genius/fool ratio for our species, the odds aren't
PGP: E2AB1DE4          | good.                                  Bruce Schneier

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]