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#1
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[SD] Sparse Image 'size creep'
Hello all,
Here's my query... I back up my main HD (which at present is using ~ 18gb), I run SD using Smart Backup (this usually takes around 5 minutes), my final backup image weighs in at around 22.4gb. Why is there this size increase? It seems to happen every time (a size increase), even if not much has changed. Apologies if this is a silly question, I am just curious. |
#2
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It's the way Apple manages free space inside a sparse image. They tend to expand the external size before they re-use internal space...
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--Dave Nanian |
#3
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Ahh, that makes sense. Thanks for the quick reply.
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#4
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True but you can also compact the image file.
hdiutil compact '/Volumes/<drive>/<path>/backup.sparseimage' Last edited by rdlsmith; 08-10-2007 at 01:53 AM. |
#5
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Quote:
"hdiutil: compact failed - Device not configured" Are we sure this is supposed to work, and (separate question) if so, could/should this be default behavior when doing a Smart Update? |
#6
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Yes, this definitely works. It sounds like you didn't point at the (unmounted) file.
While it could be the default behavior, I don't think it should be. It's quite slow and isn't generally necessary...
__________________
--Dave Nanian |
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