Challenge: dump | restore

[Stephen Samuel]

Try :

cd ~

dump -0af -  /dev/someVG/sourceFS | ( cd /mnt/newFS; restore -rf - ~/newFS )


On Wed, Nov 10, 2010 at 3:38 PM, Edward Ned Harvey <kernel at nedharvey.com>wrote:

> This runs for a few minutes, and results in a broken pipe.  After which, at
> least some fragments of the filesystem have been restored on the destination
> filesystem.  At least some directories.
>
> cd /mnt/newFS
>
> dump -0af - /dev/someVG/sourceFS | restore -rf -
>
>
>
> This works fine.
>
> cd ~
>
> dump -0af somefile /dev/someVG/sourceFS
>
> cd /mnt/newFS
>
> restore -rf ~/newFS
>
>
>
> Source and destination filesystems are ext3, 194G and 857G.  Destination
> filesystem is created with simply default mkfs.ext3.  There are only approx.
>
> 200M used in the source filesystem, of which, there's no particularly huge
> directory or number of inodes or anything unusual...  I forced the fsck, and
> it came back clean.
>
> My only guess is that there seems to be something wrong with the pipe.
> Like, it's not streaming the bits properly or something.  Is it possible to
> overflow a pipe or something?  I can't think of any good explanation for
> this weird behavior.  What could cause a pipe to break, aside from the
> receiving process terminating unexpectedly?
>


-- 
Stephen Samuel http://www.bcgreen.com  Software, like love,
778-861-7641                              grows when you give it away
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