On Sat, 3 Nov 2018 at 06:27, Pete Biggs pete@biggs.org.uk wrote:
restore tvf u1_l0_04-29-09_md1.dump Verify tape and initialize maps Input is from a local file/pipe Checksum error 20311110402, inode 0 file (null) restore: Tape is not a dump tape
what does 'file' think the file is - i.e. what does
file u1_l0_04-29-09_md1.dump
say?
Here's a log file from when the backup was done back in 2009:
DUMP: Date of this level 0 dump: Wed Apr 29 09:24:36 2009 DUMP: Dumping /dev/md1 (/u1) to u1_l0_04-29-09_md1.dump DUMP: Label: /u1 DUMP: Writing 10 Kilobyte records DUMP: Compressing output at compression level 2 (bzlib)
DUMP: finished in 23704 seconds, throughput 4075 kBytes/sec DUMP: Date of this level 0 dump: Wed Apr 29 09:24:36 2009 DUMP: Date this dump completed: Wed Apr 29 16:00:09 2009 DUMP: Average transfer rate: 2146 kB/s DUMP: Wrote 96607840kB uncompressed, 50878096kB compressed, 1.899:1 DUMP: DUMP IS DONE
The dump is compressed. What was the command line you used to create the dump file?
Have you tried using
restore tzvf u1_l0_04-29-09_md1.dump
I agree with Pete and it will be up to see what file and others say to see which type of compression was done.. (z means gzip, j means bzip2 which would be the ones from 2009).
Have there been any changes to the format of dump files and if so, is there a version available that can read this older backup?
I don't think dump has changed anything in 20 years or so! And I certainly can't see it changing such that it can't read old files - that is, sort of, it's raison d'etre.
P.
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