Regarding full snapshot

Hello.

I managed to fill up a snapshot which (obviously) rendered it invalid and I know this topic has been touched several times. However, it was mentioned (post quoted below) that it might be possbile to recover some ciritcal files out of the snapshot.

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On Thu, 23 Aug 2007, Hans C. Kaspersetz wrote:
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full. I.e., you might be able to pull out a critical file if you had to, but it is a mess, and you are usually better off just deleting the snapsnot.

P.S. If you need to recover a critical file, unmount (or mount readonly) the source LV immediately so it stops overwriting the snapshot.
...
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Can someone give me some hints about this? After a reboot the device-mapper fails to read the snapshot metadata.

best regards,
frodem

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