From: Christoph Hellwig <hch@lst.de>
To: Damien Le Moal <Damien.LeMoal@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
Jens Axboe <axboe@kernel.dk>,
Chaitanya Kulkarni <Chaitanya.Kulkarni@wdc.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
Keith Busch <Keith.Busch@wdc.com>
Subject: Re: [PATCH v3 1/3] block: introduce zone_write_granularity limit
Date: Sun, 24 Jan 2021 11:07:24 +0100 [thread overview]
Message-ID: <20210124100724.GA27580@lst.de> (raw)
In-Reply-To: <BL0PR04MB6514A2655635DFF482E4252BE7A00@BL0PR04MB6514.namprd04.prod.outlook.com>
On Fri, Jan 22, 2021 at 08:56:58AM +0000, Damien Le Moal wrote:
> > This looks a little strange. If we special case zoned vs not zoned
> > here anyway, why not set the zone_write_granularity to the logical
> > block size here by default.
>
> The convention is zone_write_granularity == 0 for the BLK_ZONED_NONE case. Hence
> the reset here if we force the zoned model to none for HA drives. This way, this
> does not create a special case for HA drives used as regular disks.
Just inititialize it for all cases if you initialize it for some here.
That way everyone but sd already gets a right default and life becomes
simpler.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Damien Le Moal <Damien.LeMoal@wdc.com>
Cc: Jens Axboe <axboe@kernel.dk>, Keith Busch <Keith.Busch@wdc.com>,
Chaitanya Kulkarni <Chaitanya.Kulkarni@wdc.com>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v3 1/3] block: introduce zone_write_granularity limit
Date: Sun, 24 Jan 2021 11:07:24 +0100 [thread overview]
Message-ID: <20210124100724.GA27580@lst.de> (raw)
In-Reply-To: <BL0PR04MB6514A2655635DFF482E4252BE7A00@BL0PR04MB6514.namprd04.prod.outlook.com>
On Fri, Jan 22, 2021 at 08:56:58AM +0000, Damien Le Moal wrote:
> > This looks a little strange. If we special case zoned vs not zoned
> > here anyway, why not set the zone_write_granularity to the logical
> > block size here by default.
>
> The convention is zone_write_granularity == 0 for the BLK_ZONED_NONE case. Hence
> the reset here if we force the zoned model to none for HA drives. This way, this
> does not create a special case for HA drives used as regular disks.
Just inititialize it for all cases if you initialize it for some here.
That way everyone but sd already gets a right default and life becomes
simpler.
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Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme
next prev parent reply other threads:[~2021-01-24 10:10 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-22 8:00 [PATCH v3 0/3] block: add zone write granularity limit Damien Le Moal
2021-01-22 8:00 ` Damien Le Moal
2021-01-22 8:00 ` [PATCH v3 1/3] block: introduce zone_write_granularity limit Damien Le Moal
2021-01-22 8:00 ` Damien Le Moal
2021-01-22 8:42 ` Christoph Hellwig
2021-01-22 8:42 ` Christoph Hellwig
2021-01-22 8:56 ` Damien Le Moal
2021-01-22 8:56 ` Damien Le Moal
2021-01-24 10:07 ` Christoph Hellwig [this message]
2021-01-24 10:07 ` Christoph Hellwig
2021-01-25 5:32 ` Damien Le Moal
2021-01-25 5:32 ` Damien Le Moal
2021-01-25 5:34 ` Damien Le Moal
2021-01-25 5:34 ` Damien Le Moal
2021-01-23 2:43 ` Martin K. Petersen
2021-01-23 2:43 ` Martin K. Petersen
2021-01-22 8:00 ` [PATCH v3 2/3] block: document zone_append_max_bytes attribute Damien Le Moal
2021-01-22 8:00 ` Damien Le Moal
2021-01-23 2:43 ` Martin K. Petersen
2021-01-23 2:43 ` Martin K. Petersen
2021-01-23 3:03 ` Chaitanya Kulkarni
2021-01-23 3:03 ` Chaitanya Kulkarni
2021-01-22 8:00 ` [PATCH v3 3/3] zonefs: use zone write granularity as block size Damien Le Moal
2021-01-22 8:00 ` Damien Le Moal
2021-01-22 8:42 ` Christoph Hellwig
2021-01-22 8:42 ` Christoph Hellwig
2021-01-23 2:44 ` Martin K. Petersen
2021-01-23 2:44 ` Martin K. Petersen
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