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

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Message-ID: <9f714044-3254-fca4-172a-a947d725c316@infradead.org>
Date:   Fri, 11 Sep 2020 15:38:21 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Johannes Thumshirn <Johannes.Thumshirn@....com>,
        Borislav Petkov <bp@...en8.de>,
        Damien Le Moal <Damien.LeMoal@....com>
Cc:     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

On 9/11/20 3:26 PM, Johannes Thumshirn wrote:
> On 12/09/2020 00:22, Randy Dunlap wrote:
>> On 9/11/20 3:17 PM, Borislav Petkov wrote:
>>> On Fri, Sep 11, 2020 at 09:53:12PM +0200, Borislav Petkov wrote:
>>>> Now, looking at that patch:
>>>>
>>>>   5795eb443060 ("scsi: sd_zbc: emulate ZONE_APPEND commands")
>>>>
>>>> yeah, that doesn't revert cleanly. But it talks about zoned-something
>>>> devices and that rings a bell because you guys broke my zoned device
>>>> once already:
>>>
>>> Ok, so Johannes and I poked a bit on IRC and here it is:
>>>
>>> # CONFIG_BLK_DEV_ZONED is not set.
>>>
>>> Enabling it, fixes the issue.
>>>
>>
>> Uh, you are not saying that enabling that CONFIG_ is the final fix, are you?
>>
>> If so, do I need to enable it, even if I don't have a zoned block device?
>>
> 
> No he does have a zoned block device and no this is not the final fix, I 
> think one of the stubbed out functions is broken, but it's midnight here
> so we're calling it a day and chime back in on Monday.

Sure, thanks for the answers.


> And this setup is a bit special, as Boris is using partitions on a host-aware
> zoned block device which is somewhat exotic (see add_partition()).
> 
> Byte,

?  :)


-- 
~Randy