Re: [PATCH 0/4] Generalize zonemode=zbd

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On 2020/04/08 9:07, Vincent Fu wrote:
> On 4/7/20 4:48 PM, Jens Axboe wrote:
>  > On 4/6/20 6:58 PM, Damien Le Moal wrote:
>  >> This series extend support for zonemode=zbd beyond Linux only and as is
>  >> allows the use of this zonemode on any platform with regular block
>  >> devices. The same also applies to Linux systems that do not have zoned
>  >> block device support (e.g. enterprise distributions with kernels version
>  >> lower than 4.10). For zoned block device support, Linux implementation
>  >> is preserved. Other OS specific code can be added with automatic
>  >> configuration with the configure script to add zoned block device
>  >> support.
>  >>
>  >> Additionally, ioengine operations are updated to allow an IO engine to
>  >> provide implementations for the zone operations needed to support zoned
>  >> block devices. This is convenient for cases where the system OS/kernel
>  >> does not have any support implementation available.
>  >>
>  >> Finally, the libzbc IO engine is introduced to support zoned block
>  >> devices on Linux distributions without native kernel level support (E.g.
>  >> RedHat/CentOS). SImilarly to the sg ioengine, this new IO engine usesi
>  >> passthrough commands implemeted by libzbc API to directly access SMR
>  >> drives.
>  >
>  > Looks ok to me, I've applied it. But please send a job file that uses
>  > it as well to put in examples/, thanks.
>  >
> 
> The AppVeyor Windows builds fail due to the zbd changes:
> 
> https://ci.appveyor.com/project/axboe/fio/builds/32024485
> 
> configure reports:
> 
> Zoned block device support    no
> libzbc engine                 no
> 
> but nevertheless an attempt is made to build the zbd code.

With the changes, zbd.c should be compiled for any OS to enable zonemode=zbd
with regular block devices. But oslib/linux-blkzoned.c should not be compiled.
What is the compilation error ? Is it something in zbd.c ?
I do not have any Windows machine to test builds.


-- 
Damien Le Moal
Western Digital Research




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