rsync and deleted files

[Stephen]

http://backuppc.sourceforge.net/info.html

ok reading this it is very nifty indeed.

On Tue, Sep 8, 2009 at 9:57 AM, der.hans <PLUGd at lufthans.com> wrote:
> Am 07. Sep, 2009 schwätzte Nathan England so:
>
> moin moin Nathan,
>
>> I plugged my USB drive into my system, ran my backup script and went to
>> supper. My backup script contains
>>
>> rsync -avz --delete-after /home/naubrey/ /media/320GB/naubrey/
>>
>>
>> Usually, it works great. Problem is my /home/naubrey/ directory on my
>> system was EMPTY and it wiped out my backup!!!!
>
> I suggest limiting this kind of damage.
>
> --max-delete=NUM        don’t delete more than NUM files
>
>> I just wiped my work laptop and reinstalled, but I had not copied my user
>> directory stuff back because I needed to make some additional changes. I
>> made the changes and wanted to back up the changes, forgetting my user
>> directory was included in my all_inclusive backup script...
>>
>> The USB drive is ext2 and when I came back I immediately unmounted and
>> mounted ro.
>
> If you have space, made a dd copy of the partition that got wiped. Then,
> if you've got space, make a copy of that image and try your recovery on
> that copy. Then, if things get messed up you can make another copy and try
> again. If you only have room for one copy of the image leave the USB drive
> as read-only and work on the copy. If the copy gets messed up you can make
> a pristine copy again.
>
> cp -p is faster than dd and local bus should be much faster than USB,
> which is why I suggest working on a copy of the copy.
>
> # If the USB partition is /dev/sdb1 and the free space is in
> # /mnt/bigspace, then the following commands should do what you need.
> * It's been a long time since I looked at recover, so you'll have to
> # figure that one out.
>
> # Check that you understand each of the commands before running them! :)
>
> dd if=/dev/sdb1 of=/mnt/bigspace/usb_drive.2009Spe08.img
>
> cp -p /mnt/bigspace/usb_drive.2009Spe08.img \
>        /mnt/bigspace/usb_drive-copy.2009Spe08.img
>
> sudo mkdir /mnt/usb_recover
>
> sudo mount -o loop /mnt/bigspace/usb_drive-copy.2009Spe08.img
> /mnt/usb_recover
>
> recover -options /mnt/usb_recover
>
>> This is a typical user directory with 60GB of text files, abiword files,
>> kword files, OpenOffice files, mp3, ogg, about 100 avi dvds, and thousands
>> of notes... Some files were only 2 k others were over 1GB.
>>
>> As I have never attempted recovery of deleted files because I am (99% of
>> the time) very vigilante about my backups. I design backup systems for
>> customers!!!! ha ha
>
> Not having space will be a problem. Can you borrow a drive from someone?
> Do you know a place with a GB free that will let you boot off a USB thumb
> drive?
>
>> What utilities or programs are there that might automate this as I really
>> don't care to sit and tell the system to recover this inode, and yes, this
>> inode, and again y to this inode as there are well over 200,000 files.
>
> recover will toss all the files in a directory for you or something.
>
> For the future you might wish to allow some extra space for backups and
> using something like BackupPC. It can use rsync and it uses a hard link
> farm in order to only keep one copy of a version of a file no matter how
> many times it's backed up. I find it doesn't actually use much more space.
> If you have lots of text files BackupPC might use less space because it
> transparently compresses files in the backup area.
>
> Also, check the archives for file recovery threads. Other people have made
> good suggestions in the past.
>
> ciao,
>
> der.hans
> --
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-- 
A mouse trap, placed on top of your alarm clock, will prevent you from
rolling over and going back to sleep after you hit the snooze button.

Stephen