Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...)
2004-10-13 09:49:43
Alexander Jolk wrote:
Toralf Lund wrote:
tar: Skipping to next header
tar: Archive contains obsolescent base-64 headers
37800+0 records in
37800+0 records out
gzip: stdin: invalid compressed data--crc error
tar: Child returned status 1
tar: Error exit delayed from previous errors
I've had the same message from tar on what were apparently erroneous
backups. I believe the `obsolescent base-64 header' message is what you
get whenever tar's input is corrupted, which seems to be confirmed by
gzip's `crc error'.
I was hoping you wouldn't say that ;-( But yes, I guess it's likely that
the actual backup is corrupted.
I'd venture to say your backups are hosed; if that
arrives systematically, you might want to investigate your SCSI chain.
Well, yes, I've now found that I do get this for different dump files
(but not all of them), so I guess some serious problem with the setup is
likely. I don't think SCSI-issues is likely to be the cause, though,
since I get the same kind of problem with harddisk dumps as well as
tapes, and as it now turns out, also for holding disk files. And the
disks and tape drive involved aren't even on the same chain.
Actually, I'm starting to suspect that gzip itself is causing the
problem. Any known issues, there? The client in question does have a
fairly old version, 1.2.4, I think (that's the latest one supplied by
SGI, unless they have upgraded it very recently.)
Also, to my great relief, it turned out that I could actually extract
most of the files I wanted by skipping over the error point via dd
skip=... tar still gave me warnings when I did this (unsurprisingly
enough since the data was probably not aligned to a file boundary after
the skip), but this time it was actually able to find files after it
did. Based on this, I'm thinking that the original tar should at least
have been able to resync itself. Any ideas why it didn't?
(Sacrificed a goat lately?)
Apparently not...
- T
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- tar/gzip problems on restore (CRC error, "Archive contains obsolescent base-64 headers"...), Toralf Lund
- Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...), Alexander Jolk
- Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...),
Toralf Lund <=
- Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...), Jean-Francois Malouin
- Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...), Toralf Lund
- Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...), Gene Heskett
- Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...), Toralf Lund
- Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...), Geert Uytterhoeven
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- Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...), Toralf Lund
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- Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...), Toralf Lund
- Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...), Toralf Lund
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