Re: [PATCH 0/6] power_of_2 emulation support for NVMe ZNS devices

Pankaj Raghav
2022-03-16T16:18:36Z

Hi Damien,

On 2022-03-16 01:00, Damien Le Moal wrote:
>> As for F2FS and dm-zoned, I do not think these are targets at the
>> moment. If this is the path we follow, these will bail out at mkfs
>> time.
>
> And what makes you think that this is acceptable ? What guarantees do
> you have that this will not be a problem for users out there ?
>
As you know, the architecture of F2FS ATM requires PO2 segments,
therefore, it might not be possible support nonPO2 ZNS drives.

So we could continue supporting PO2 ZNS drives for F2FS and bail out if
it is a Non PO2 ZNS drive during mkfs time (This is the current behavior
as well). This way we are not really breaking any ZNS drives that have
already been deployed for F2FS users.

--
Regards,
Pankaj