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01-06-2006 03:53 AM
01-06-2006 03:53 AM
Volume set repair
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01-06-2006 03:58 AM
01-06-2006 03:58 AM
Re: Volume set repair
Wim
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01-06-2006 04:02 AM
01-06-2006 04:02 AM
Re: Volume set repair
How many disks in each set?
The problem is that some or all of each file would have been on the disks that where removed.
Purely Personal Opinion
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01-06-2006 04:17 AM
01-06-2006 04:17 AM
Re: Volume set repair
Sorry, but NO way! Part of your data (about 2/3) is (was) on the disks that are used elsewhere.
And if you find a single drive big enough to hold all, even a restore to that drive is not straightforward. An /IMAGE restore WILL want to restore each file(-fragment) to its original Relative Volume Number.
_IF_ you had _NO_ file aliasses on that set, _THEN_ you can restore the whole saveset to a mounted Files-11 drive. Make sure not to forget /OWN=ORIGINAL !
I wish you good luck and success. I think you will need both.
Proost.
Have one on me.
jpe
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01-06-2006 09:44 AM
01-06-2006 09:44 AM
Re: Volume set repair
Obviously, the data on the two volumes that were removed is lost (presuming that they were overwritten).
It may be possible to recover some of the contents of the remaining volumes (actually, I told a war story about just such an incident at the 1990 European DECUS Symposium).
I am in the middle of something, I will try to comment more extensively later.
- Bob Gezelter, http://www.rlgsc.com
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01-09-2006 01:20 AM
01-09-2006 01:20 AM
Re: Volume set repair
If not I have to init the Volume set and hope I can restore the original files to the smaller volume set...
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01-09-2006 01:29 AM
01-09-2006 01:29 AM
Re: Volume set repair
I haven't done this in years, but it is possible to just restore the missing volumes from your last backup.
You will have to provide drives of course.
If you want to back up the contents of the untouched members of the volume set before proceeding, you can always do a BACKUP/PHYSICAL of them for safekeeping.
After making a physical backup of them, you could try restoring just the 2 missing drives and mounting the volume set. If it will mount at all, then you can do a file level backup of the 2 good volumes by using the /VOLUME qualifier to specify which one(s) you want to select.
After backing up the files, then you can attempt an ANALYZE/DISK [/REPAIR] on the volume set and see just how bad things look.
Robert
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01-09-2006 01:43 AM
01-09-2006 01:43 AM
Re: Volume set repair
Wim
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01-09-2006 02:09 AM
01-09-2006 02:09 AM
Re: Volume set repair
Before doing anything else, take the surviving members of the volume set offline.
As I mentioned previously, it is possible to recover the data on the surviving members of the volume set.
Having done this very procedure (as a result of a head crash), it is doable (and ironically) fully within the Files-11 specification. However, it is delicate procedure, and involves faking out MOUNT and carefully using the results from ANALYZE.
If the data is valuable, it is worth doing. This is particularly true for very large volume sets (such as the one that you describe).
It is difficult to describe the detailed steps to recover this situation in a reasonable length posting, but it is possible to recover the files on the surviving volumes.
If I can be of assistance, please drop me a note by private email.
- Bob Gezelter, http://www.rlgsc.com
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01-09-2006 02:33 AM
01-09-2006 02:33 AM