Hi,
On Sat, May 22, 2010 at 3:46 PM, Carlos E. R.
rar a -rr -rv -v4589808k sda2 sda2.img
which produces (slowly, about 45 minutes per 4.4GiB file) 8 files named like sda2.part01.rar to sda2.part08.rar, plus one sda2.part1.rev.
It is slow, disk is busy at only about 2MB/s, or about 20..30MB/s on the empty regions of the image. It only uses one core of the cpu. I recogn I have not used rar since about 1997 (when I started using linux), but I don't remember it being slow. Of course, the file I'm compressing is very large...
I wonder if there are opensource compressors with similar features?
7-zip, probably? It does have -v (volume) option. I do not know whether it creates recovery data. I never used it for such a huge volumes, but on usual stuff it is mostly better than rar. (There is p7zip version for Linux and some GUI front-ends, like Q7Z). I would expect the compressor to be slow on huge data set. It has to do some preliminary pass or at least some level of "looking forward", has it not? -- Mark Goldstein -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org