Re: Back to the future.

Kyle Moffett
2007-05-04T13:28:09Z

On May 04, 2007, at 03:52:03, David Greaves wrote:
> Kyle Moffett wrote:
>> On May 03, 2007, at 11:10:47, Pavel Machek wrote:
>>> What happens if you try to boot and filesystems are frozen from
>>> previous run?
>>
>> If you're just doing a fresh boot then the filesystem is already
>> clean due to the dm freeze and so it mounts up normally. All you
>> need to do then is have a little startup script which purges the
>> saved image before you fsck or remount things read-write since
>> either case means the image is no longer safe to resume.
>
> Wouldn't it be better if freeze wrote a freeze-ID to the fs and
> returned it? This would naturally be kept in the image and a UUID
> mismatch would be detectable - seems safer and more flexible than
> 'a script'.
>
> "This isn't the freeze you're looking for, move along"

Possibly, but I was referring to the _current_ behavior of the device-
mapper freezing. While perhaps not ideal, it's currently very easily
usable.

Cheers,
Kyle Moffett