Re: filesystem dead, xfs_repair won't help

Eric Sandeen
2017-04-12T16:22:07Z

On 4/12/17 11:20 AM, Christoph Hellwig wrote:
> On Wed, Apr 12, 2017 at 07:15:40PM +0300, Avi Kivity wrote:
>> This preserves the ability to do O_DIRECT reads at 512 byte granularity,
>> yes?
>
> No.
>
>> We make use of that (it's probably less important on NVMe; still why
>> waste bandwidth needlessly).
>
> In that case it would be the wrong thing for you.

And it would be really interesting to see if the 512-byte DIOs you
issue under ext4 might trigger the same problem in the firmware.

(This is all pure speculation, but that's all we've got) ;)

-Eric