Re: csum failed during copy/compare

2016-10-21 Thread Martin Dev
SATA trace shows device behaving correctly. btrfs repair --ignore-errors /dev/sda2 /tmp/ will yield files that are not verifiable by FIO, and differ from the original files on the internal drive that they were copied from at the failing offset. On Wed, Oct 19, 2016 at 3:39 PM, Martin Dev

Re: csum failed during copy/compare

2016-10-19 Thread Martin Dev
; On Mon, 10 Oct 2016 10:44:39 +0100 >> Martin Dev <mrturtle...@gmail.com> wrote: >> >>> I work for system verification of SSDs and we've recently come up >>> against an issue with BTRFS on Ubuntu 16.04 >> >>> This seems to be a recent change >

Re: csum failed during copy/compare

2016-10-10 Thread Martin Dev
After some investigation this seems to follow the discard flag set in fstab. 9 or so reproductions with discard on partition 2 fail move discard flag to partition 1, then partition 1 fails. Re-running our tests with no discard options set in fstab On Mon, Oct 10, 2016 at 1:02 PM, Martin Dev

Re: csum failed during copy/compare

2016-10-10 Thread Martin Dev
, Oct 10, 2016 at 10:44 AM, Martin Dev <mrturtle...@gmail.com> wrote: > Hey everyone, > > I work for system verification of SSDs and we've recently come up > against an issue with BTRFS on Ubuntu 16.04. We have a framework which > follows the following steps: > > Ge

Fwd: csum failed during copy/compare

2016-10-10 Thread Martin Dev
Hey everyone, I work for system verification of SSDs and we've recently come up against an issue with BTRFS on Ubuntu 16.04. We have a framework which follows the following steps: Generate verifiable 10GB file with FIO on internal drive Copy 10GB file to 2 target partitions on DUT (using "cp"