On 7 Sep 2018 at 15:56, JD wrote: Date sent: Fri, 07 Sep 2018 15:56:21 -0600 From: JD <jd1008@xxxxxxxxx> To: users@xxxxxxxxxxxxxxxxxxxxxxx Subject: Re: OT: fastest way to copy one drive to another Send reply to: Community support for Fedora users <users@xxxxxxxxxxxxxxxxxxxxxxx> > > > On 09/07/2018 03:34 PM, Michael D. Setzer II wrote: > > On 7 Sep 2018 at 15:54, Ranjan Maitra wrote: > > > > Date sent: Fri, 7 Sep 2018 15:54:59 -0500 > > From: Ranjan Maitra <maitra@xxxxxxxxx> > > To: users@xxxxxxxxxxxxxxxxxxxxxxx > > Subject: Re: OT: fastest way to copy one drive to another > > Organization: Mailbox Ignored > > Send reply to: users@xxxxxxxxxxxxxxxxxxxxxxx > > > >> On Fri, 7 Sep 2018 16:37:49 -0400 Tony Nelson <tonynelson@xxxxxxxxxxxxxxxxx> wrote: > >> > >>> On 18-09-07 15:48:23, jdow wrote: > >>> > >>>> dd if=/dev/<drive1> of=/dev/<drive2> bs=1073741824 > >>>> conv=sparse,noerror & pid=$! > >>> bs=1M > >>> > >> Btw, do the drives have to be unmounted? Just making sure. > > Drives should not be mounted at time, or changes could be made during the > > copying process. > > > > The line for the cloning process in my g4l is like this. > > dd bs=1M if=$clonesource 2>/dev/null |jetcat-mod -f 5000 -p $clonesize > > 2>$progout |dd bs=1M of=$clonetarget 2>/dev/null & > > > > Uses a dialog script to set the variables, and then runs the copy command in > > background. The foreground script takes the data written to the progout file > > and displays a progress bar via dialog. > > > > Be very careful to make sure you copy the correct drive to the correct drive, > > since if you get it wrong you loose it all. > > > Michael D. Setzer II, > What is the purpose of inserting the utility > jetcat-mod between the 2 dd commands? > The jetcat-mod is a filter that monitors the process of the copy, and outputs the info every 5 seconds with this option. The dialog then displays a running graph of the progress along with estimated speed. In the clone case there is no compression, so the rate is generally the physical speed of disk. With image files that are compressed, the effective speed can vary greatly depending on how much the data was compressed. Mostly just gives progress versus just waiting for the dd command to finish. > _______________________________________________ > users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx > To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx > Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx +------------------------------------------------------------+ Michael D. Setzer II - Computer Science Instructor (Retired) mailto:mikes@xxxxxxxx mailto:msetzerii@xxxxxxxxx Guam - Where America's Day Begins G4L Disk Imaging Project maintainer http://sourceforge.net/projects/g4l/ +------------------------------------------------------------+ http://setiathome.berkeley.edu (Original) Number of Seti Units Returned: 19,471 Processing time: 32 years, 290 days, 12 hours, 58 minutes (Total Hours: 287,489) BOINC@HOME CREDITS ROSETTA 65778205.643098 | ABC 16613838.513356 SETI 109514958.178814 | EINSTEIN 141374481.499240 _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
