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Mount read-only disk images as read-write images
Authored by: derrickbass on May 19, '05 05:40:24PM
One thing about shadow files that's pretty annoying... As soon as you read any portion of the disk image, that bit is written out to the shadow file, even if you don't change it. So you can end up with a really gigantic shadow file (even bigger than the original disk image, because that can be compressed, while the shadow file cannot), even if your never write to the disk image at all.

I think the reason is that this system was designed for network booting (the original disk image would be on the server and the shadow file on the local computer), so it makes sense to cache anything that is read over the network to the local drive. But it would be nice to be able to turn that off.

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