walrus@wam.umd.edu (Udo K Schuermann) (07/20/90)
I just recently got a copy of MRBackup 4.0 and used it last night when I decided to expand all partitions into a single one. After restoring the backup disks, I found that a fair number of the .Z files were restored to an incorrect file size. In all cases, the files were missing information at the end. Has anybody had problems of this nature with MRBackup 4.0 ? Please respond via email so as not to clutter the net. I did try to email this to Mark Rinfret but it bounced. Relevant information and more details listed below; Press "n" to skip. MRBackup's settings: 16-bit compression 512K buffer (largest possible) Title screen: "MRBackup V4.0b - May 29 1990 18:40:27" Executable's size: 101560 bytes .bflt contains: (*~) .cflt contains: (*.zoo|*.arc|*.GIF|*.Z|*.zip|*.lhw|*.wrp) .dflt contains nothing My System: Amiga 2000 GVP 68030/68882 100 Meg Quantum HD (FFS) 1M Chip, 4 Meg Fast Software running: DMouse 1.2, XSize, VSnap 1.4, Conman 1.1, TrackSalve [could this one interfere with WRITING to disk?] no applications active (only passive or semi-passive utils such as those above) AmigaDOS 1.3.2 with ARP 39.1 Display: morerow'd 700x230 WB. One of the recoverable files (I still had a .zoo file intact with it) is VirusX 4.0: Original size: 19016 MRBackup .Z : 16384 (curious) compress .Z : 14013 Compress from FF#051 compressed and decompressed the file perfectly, but neither MRBackup nor "compress -d" would recover 19016 bytes out of the MRBackup-generated VirusX.Z file. MRBackup decompressed the 16K .Z file to something like 11K (!). The curious 16384 size is not, aparently the norm -- other files seem to be "chopped" at odd boundaries. Few times are the .Z files too large. Another, possibly unrelated problem, involved a "bigfile" getting stored on the disk with a size of 524,xxx bytes (I think it might have been exactly 512K) and along with about 3 other tiny files, the disk showed about 1750 blocks used -100% full. I expected more like 830K instead of 512K to fit on a disk. The disk was quick formatted by MRBackup. IF MARK RINFRET READS THIS: I have not registered my copy with you. I didn't have enough floppies to do a complete backup of all partitions with QuarterBack, which is why I gave MRBackup a try. I like the way MRBackup does what it does, but this rather serious failure has somewhat soured me on the program. I will try, however, to assist you in tracking down this problem. Email me at the address below, or: USnail: 11235 Oakleaf Dr. Apt. 1520; Silver Spring, MD 20901 ._. Udo Schuermann "Are you suggesting that coconuts migrate?" ( ) walrus@cscwam.umd.edu -- Monty Python