linux-kernel - Re: first bad commit: [5795eb443060148796beeba106e4366d7f1458a6] scsi: sd_zbc: emulate ZONE

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Message-ID: <20200912083739.GA4827@zn.tnic>
Date:   Sat, 12 Sep 2020 10:37:39 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Damien Le Moal <Damien.LeMoal@....com>
Cc:     Johannes Thumshirn <Johannes.Thumshirn@....com>,
        Christoph Hellwig <hch@....de>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Hannes Reinecke <hare@...e.de>, Jens Axboe <axboe@...nel.dk>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: first bad commit: [5795eb443060148796beeba106e4366d7f1458a6]
 scsi: sd_zbc: emulate ZONE_APPEND commands

Hi Damien,

On Sat, Sep 12, 2020 at 02:31:55AM +0000, Damien Le Moal wrote:
> Can you try this:

sure, but it is white-space damaged:

checking file drivers/scsi/sd.c
patch: **** malformed patch at line 86: scsi_disk *sdkp)

Welcome to the world of outlook and how sending patches with it never
works. You guys might need linux.wdc.com now :-)))

> That should fix the above as well as the hang on boot with CONFIG_BLK_DEV_ZONED
> disabled (for that one I do not totally understand what is going on...).
>
> We do not have any host-aware disk for testing (as far as I know, nobody is
> selling these anymore),

Yeah, so Johannes said. I love it how a (relatively) brand new
technology gets immediately deprecated :-\

> so our test setup is a bit lame in this area. We'll rig something up
> with tcmu-runner emulation to add tests for these devices to avoid
> a repeat of such problem. And we'll make sure to add a test for
> host-aware+partitions, since we at least know for sure there is one
> user :)

Bah, I use it as a big data dump so if you say, I should make use of it
as a proper zoned device (I've skimmed through http://zonedstorage.io/ a
bit last night), I can try to find some time...

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette