Re: tar/gzip problems on restore (CRC error, "Archive contains obsolescentbase-64 headers"...)
2004-10-15 04:03:45
Toralf Lund wrote:
Alexander Jolk wrote:
Toralf Lund wrote:
[...] 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,
That rings a bell somewhere. Hasn't there been once a report on this
list from someone whose zipped backups got corrupted at every (other)
GB mark? Something with chunks on the holding disk having a header
that didn't get stripped off when writing to tape?
That would of course explain a lot. I wasn't able to find anything on
this in the mailing list archives, though, and I haven't been able to
identify header data (except for the one at the start) within the dump
files, but of course, these are a bit difficult to work with, and I
may have looked in the wrong place or for the wrong thing.
I've now tested a bit more, and while it may be too early to draw
conclusions, I'm starting to suspect that it's actually *not* splitting
up into chunk that leads to trouble. I've now changed from no chunksize
specification to "chunksize 1Gb", and everything looks more promising.
Actually, I did get a crc error from gzip when trying to unpack a dump
file created via this setup, too, but that was after all files had been
extracted (according to the amanda index), and there was no tar error.
BTW, the manual seems to be wrong in this respect; it says that default
value for chunksize is 1 Gb, but it actually is 0 (meaning no max size.)
Question: Do you know if I can get gzip to report where exactly the
mismatch is found?
I'd still like to know that.
Anybody remember which version had this problem, and whether that
gave the same symptoms?
Alex
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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
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