It may be a cockpit error. The USB drive is brand new, and I assumed formatted to vfat. It turns out it is ntfs. I reformatted the drive to ext4, and I am running benchmarks.
Initial results from hdparm (on a different machine - SurfacePro 4 running Ubuntu Timing cache reads: 9598.53 MB/sec Buffered disk reads: 6.47 MB/sec Waiting for disks benchmark on the target machine. Mark On Fri, Jul 15, 2022, 10:21 AM Robert Citek <[email protected]> wrote: > Indeed, that sounds really slow: > > ( 138GB * 1000MB/GB ) / (26hr * 60min/hr * 60s/min ) = 1.5 MB/s ~ 12 Mbps > > That's in the USB1.x range. If you use USB3.0 and can get 100MB/s write > speed, you'd be done in about 6 hours. > > Have a look at hdparm to get some info on read/write performance of your > drive: > > > https://linuxconfig.org/hard-drive-speed-test-using-linux-command-line-and-hdparm > > Good luck and let us know what you discover. > > Regards, > - Robert > > > > On Fri, Jul 15, 2022 at 10:48 AM Michael Ewan <[email protected]> > wrote: > > > Are you using a USB3 drive and a USB3 port, the speed of the interface is > > what I would think of first. > > > > On Fri, Jul 15, 2022 at 8:41 AM Mark Phillips < > [email protected]> > > wrote: > > > > > I have an Ubuntu 18.04 system with two drives in an lvm with one > logical > > > root partition. I am trying to back up the contents of the drives (ie > /) > > to > > > an external usb drive using rsync. It is taking a really long time. > After > > > 26 hours of continuous operation I have only transferred 138 GB out of > 2+ > > > TB, so I am looking at about 16 days to complete the transfer. > > > > > > My rsync command is: > > > sudo rsync --no-compress --info=progress2 -avAXEWSlHh > > > > > > > > > --exclude={'/run','/mnt','/swapfile','/boot','/dev','/proc','/sys','/run','/mnt','/media','/lost+found','/swapfile.extended','/tmp'} > > > / '/media/mark/Seagate Portable Drive/tsunami-backups-Jul_13_17-39/' > > > > > > Any suggestions on how I can speed this up and not lose any data? > > > > > > Thanks! > > > > > > Mark > > > > > >
