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Rodrigo Real wrote:
> Hello Adam
>
> Adam Goryachev wrote:
>> Step 1) Use LVM's snapshot feature to take a snapshot of your root and
>> backuppc partitions.
>> Step 2) dd the snapshot to the two partitions on your USB HDD
>>
>> You won't be able to boot from the USB directly, because as you said,
>> you would need to install grub, adjust the menu.lst, etc to make it
>> work. If you had a USB drive larger than 500GB, eg, a 750GB drive, then
>> you could do so much more :)
>
> I was thinking about running a small shell script that would do this
> adjustments just after the end of the copy process. This script would
> mount the usb partitions e edit those files.
>
>> ie, setup the 3rd partition as the "active" partition, install grub to
>> this partition, and configure the menu.lst file as needed. Then use the
>> first two partitions the same as above.
>
> This is a good idea, and would simplify the process.
>
> Re-structuring the thoughts, maybe I could do:
>
> 1 - copy the /boot and root partitions just once in a while, or maybe
> rsync it in a low frequency, excluding the files that should be adjusted
> 2 - in a higher frequency take a snapshot of the backuppc lvm volume
> to the usb drive
>
> This way I guess some problems would be solved:
>
> * I don't have to take a snapshot of a mounted and live root system,
> which I guess would cause problems (as said by Tino)
> * I don't have to make that script to adjust everything everytime I do
> a backup
>
If a script can fix it properly, why not do it on the same frequancy
(if you can solve problem 1) ?
> The only problem I see is that I don't have disk space to make a
> snapshot and after it to dd the file to the usb disk, I never used this
> snapshot feature, I will see if I can redirect the file as a pipe
> directly to the usb drive.
>
You could always reduce your FS size, to make space for the
snapshots,.... depending on your pool size/etc....
Regards,
Adam
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