1 |
Hi & thanks, |
2 |
|
3 |
On Wed, 2010-04-28 at 17:31 +0200, Florian Philipp wrote: |
4 |
|
5 |
> > Can md use one internal and one external disk in a RAID 1 setup, with |
6 |
> > the external disk not always there? Any other suggestions? |
7 |
> > |
8 |
> > thanks :) |
9 |
> |
10 |
> md would be extremely slow because it has to rebuild/resync the complete |
11 |
> array. |
12 |
|
13 |
so every time you unplug and re-plug the external disk, it will |
14 |
essentially re-copy everything? Damn, there goes that fine idea! |
15 |
|
16 |
> If you can live with just one big partition as a backup (probably with |
17 |
> separate /boot), you should replace fstab and grub.conf on the backup |
18 |
> medium and blacklist them from the files which you want to back up. |
19 |
|
20 |
why wouldn't I backup fstab and grub.conf as well? If my internal disk |
21 |
dies, I assume I'll swap them over, meaning grub and fstab will have to |
22 |
be the same. |
23 |
|
24 |
> Concerning the backup tool, I would use `rsync --delete` plus all |
25 |
> relevant switches for permissions, times, acls, etc. If you use another |
26 |
> tool, just make sure it doesn't put some metadata onto the backup medium |
27 |
> and that it can delete files which no longer exist on the original medium. |
28 |
|
29 |
I was thinking of rsync, but I didn't want to do it in an hourly cron |
30 |
fashion, I was hoping for some "gamin" alteration-triggered idea. |
31 |
|
32 |
> With regard to your requirement to just 'pull the cord' without |
33 |
> umounting it: |
34 |
|
35 |
I wasn't thinking of pulling the chord without unmounting, I was |
36 |
thinking of the machine dying, hence leaving the disk in a non-shutdown |
37 |
state. |
38 |
|
39 |
thanks for the tips :) rsync will at least get me going quickly. |
40 |
Yesterday I tried iotop to with dd - some slowness but otherwise quite |
41 |
nice. |
42 |
|
43 |
-- |
44 |
Iain Buchanan <iaindb at netspace dot net dot au> |
45 |
|
46 |
Real computer scientists don't comment their code. The identifiers are |
47 |
so long they can't afford the disk space. |