Mounting a snapshot of a file system
Odhiambo Washington
odhiambo.raburu at wananchi.com
Sat Aug 19 07:05:16 UTC 2006
* On 19/08/06 13:28 +0930, Malcolm Kay wrote:
| On Fri, 18 Aug 2006 01:21 am, Odhiambo Washington wrote:
| > Hi all,
| >
| > I believe that this might be possible..
| >
| > I have created a snapshot of a filesystem and moved it to a
| > remote host:
| >
| > dump -L0af - / | ssh remote_host 'gzip > snapshot.gz'
| >
| > Now I have the file snapshot.gz on the remote host.
| >
| > Two questions:
| >
| > 1. How can I mount this snapshot and access its contents?
|
| # zcat snapshot.gz | restore -i -f -
| See the restore(8) man page.
Thanks for this. I did read the restore man page, but I missed the
point. I'll stop working late into the night!
| > 2. How can I use this snapshot to create another system (a
| > clone)?
| This question leaves me wondering whether you realise that dump
| only backsup a single partition. From your dump you can only
| clone the root partition which usually is quite small and does
| not on its own lead to a useful system.
I know that fact. I needed to have clarified that this dump is
actually the "whole system, all partitions". In this particular
case, the disk is divided into two, swap (2.5xRAM) and / only.
| Anyway to restore this you need to create a suitable partition,
| initialise it with newfs, mount the partition, cd into the
| partition and then run restore -r. Again look at the restore(8)
| man page.
Oops... putting on my worn out boots and running to restore(8).
Thank you very very much. My actual problem was that I read too much
of the dump(8), until I simply got dumped ;)
Best regards,
Odhiambo Washington
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