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#1
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Ok, I've double checked and I'm not using the 'imaging' option in the Options page. I'm just copying our 'Home' partition to a disk image using the 'Backup - all files' script and choosing a disk image from the the 'to' drop-down window and then selecting the 'Disk Image...' option (I selected a disk image 'home_backup.dmg' on the Desktop).
Our 'Home' partition is about 14 Gb. After the copying process begins a home_backup.dmg.sparse_image icon appears on the Desktop. I've also now noticed that a Volume icon called 'Home' also appears on the Desktop (in addition to the main disk icon for the 'Home' partition). ~40 minutes later, the SuperDuper! window changes to say 'Finalizing home_backup.dmg session. At this point an icon for home_backup.dmg appears on the Desktop. However, this is also the point at which our 'Home' disk partition becomes unmounted and any logged in users find that they can't really do anything. ~20 minutes later and the SuperDuper! window changes to say 'Pre-scanning home_backup.dmg to support fast block copy restore'. ~15 minutes later and the copying finishes, leaving just a home_backup.dmg disk image on the Desktop. Until I stop and restart the servers AFP service, users cannot access the Home partition. This 'bug' is reproducible, I've done this about four times now (it still surprises me it takes 75 minutes to copy 14 Gb!). I can only imagine that after 40 minutes, when the 'Home' volume icon is unmounted, it is somehow unmounting the main 'Home' disk partition too. I'm still not sure why copying the Home partition necessitates creating a volume of the same name. Hope this information helps you trace what might be happening. Regards, Keith |
#2
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OK. This really sounds like a bug in AFP, which is not properly dealing with the unmount of the sparse image.
As I mentioned before, the User's Guide describes what's going on during the 'direct imaging' process. Multiple steps are required to ensure the backup is of minimal size, and to allow it to be restored, using ASR, to any device (it's device-independent). Instead, though, I'd strongly recommend using the technique in the FAQ, as I suggested before. I think this will get you past this strangeness while we try to determine what, exactly, is happening. (It really sounds like AFP is erroneously marking the volume as unavailable even though it's not unmounted.)
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--Dave Nanian |
#3
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Keith --
Drop a note to support; we've worked up a transcript that does one thing slightly differently (it doesn't show the volume in the Finder), and this might work around the bug in the AFP server. You had asked one other thing about the name of the volume: we need to name it the same because when restored with ASR, this is the name that would be used for the restored volume...
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--Dave Nanian |
#4
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I've tried your alternative suggestion of first creating a disk image via Disk Utility and this method works exactly as you described and I can use Smart Update without causing our Home partition to be unmounted.
The minor problem I have with this method is that to properly automate this approach you have to first mount the disk image which is just another step to do. Thanks for looking into this. Keith |
#5
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Actually, SuperDuper! will automatically re-mount the image when invoked... glad that the alternate method works...
I've sent the alternate transcript via support for you to try.
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--Dave Nanian |
#6
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Hi again,
I just found out that SuperDuper automounts the disk image as you have just said so that's cool. I'll try to try the script that you sent me later. Thanks again for all the help. Keith |
#7
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No problem. I'll await your test results.
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--Dave Nanian |
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