Le dimanche 03 mai 2009 C 21:58 +0000, Stuart Henderson a C)crit : > On 2009-05-03, David <dunnoseriou...@gmail.com> wrote: > > Le dimanche 03 mai 2009 C 00:52 -0400, Daniel Ouellet a C)crit : > > > > [...] > >> Then I did the image of the drive from the external broken one to the > >> new clean internal one. > >> > >> dd if=/dev/rsd1c of=/dev/rwd0c bs=1m > >> > >> And let that go. Took for ever and I had no clue of progress. > > > > > > You can use Pipe Viewer (sysutils/pv) to get progress information. > > > > > > it's slower that way. reading from disk and outputting to /dev/null: > > - inside one dd process (dd if=foo of=bar) > 0m32.33s real 0m0.24s user 0m9.42s system > > - dd if=foo | dd of=bar > 0m39.27s real 0m0.55s user 0m14.96s system > > - dd if=foo | pv | dd of=bar > 0m54.14s real 0m1.86s user 0m23.98s system >
Quick test on my laptop running OpenBSD. Imaging 500M of wd0j to a file on wd0a. dd if=/dev/wd0j of=./junk bs=1m count=500 72.312 secs dd if=/dev/wd0j bs=1m count=500|dd of=./junk bs=1m 72.710 secs I add some options to pv in order to get ftp-like output dd if=/dev/wd0j bs=1m count=500|pv -pts500m |dd of=./junk bs=1m 72.830 secs Anyway it's just an occasion to discover a tool that may easily give you feedback while working with pipes.
