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Recover partial save set?
I have a backup from several years ago that was spread over two tapes. The tape with the header was overwritten. Is there any way to recover the data off the second tape? Using scanner -i on the tape it rebuilt the index and shows browseable but from the client I can't browse it. Using scanner -S ssid -x uasm -rv it seems the save set I want is the first thing on the tape but it just rolls through "scanner: scanning file 23, record 12100..." until it reaches the next save set on the tape. It doesn't show any filenames for the first save set and when it completes it says "scanner: ssid X: 0 KB (of 103 GB, 1574147 files(s)) written". Is a save set without the header useless?
Thanks.
ble1
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Posted September 7th, 2011 13:00
Without header you can't get to the head ssid. This is becuase marker on tape is positioned over that data and HW tape head won't move over it (unless header was in this case was destroyed by something else other than relabeling eg. tar). I'm not sure if start of ssid records contains ssid header or those are wrapped along whole ssid lenght, but I suspect first and in that case you are out of luck. Reading record from second tape (tail) would need to work with uasm.