Looking back over the logs files from the test runs in my last message I
noticed that some included an error message from stream.c relating to
the bzip compression layer. There are two messages and sometimes both
messages are given for the same file:
Failed to decompress buffer - bzerr=-8
Failed to decompress buffer - bzerr=-4
This is then following by the error messages I saw previously:
Bad checksum 0x7a1855c7 - expected 0x7bf0f1b0
Fatal error - exiting
Wondering if there may be an issue with the bzip2 library I tried
compressing the same file with bzip2 and it worked correctly. I also
checked with ldd and rzip and bzip2 appear to use the same version of
the bzip2 library:
$ ldd /bin/bzip2
linux-vdso.so.1 => (0x00007fff025fe000)
libbz2.so.1.0 => /lib/libbz2.so.1.0 (0x00007fa8fa066000)
libc.so.6 => /lib/libc.so.6 (0x00007fa8f9d13000)
/lib64/ld-linux-x86-64.so.2 (0x00007fa8fa276000)
$ ldd /usr/bin/rzip
linux-vdso.so.1 => (0x00007fff283fe000)
libbz2.so.1.0 => /lib/libbz2.so.1.0 (0x00007fce1ff6a000)
libc.so.6 => /lib/libc.so.6 (0x00007fce1fc17000)
/lib64/ld-linux-x86-64.so.2 (0x00007fce2017a000)
Having discovered that the compressed file is different between one
attempt and the next and that sometimes the compressed file can
uncompressed sucessfully I picked one of those compressed files that did
uncompress and tried further attempts to uncompress it. The result was
consistent - that file would always uncompress sucessfully. This
suggests that if there is a bug here it is in the compression part.
Steve.
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