I have a collection of new drives, a friend recommended I run badblocks on the new drives before using them. I ran badblocks on some of the new drives before imaging them
badblocks -v -s -w -b 4096 -o ./sda.log /dev/sda, other drives I imagined new without badblocks. ps I also ran conveyance smart tests on the badblocks drives, passed.
For the drives that I ran badblocks on, read throughput after imaging is very low
dd if=/dev/sda bs=4096 of=/dev/null count=1M with caches dropped average's 71.1MB/s.
For the drives that were just burned with a disk image, the average read rate is 195MB/s.
Did I "break" these drives by running bad blocks? Can I recover/reset them?
Smart shows a
- high spin-up time for the badblocks'd ~3000 (0 for new drives)
- Zero read error and zero sector relocation on all drives.
- self-test's pass on all drives
- otherwise nearly identical