From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Jens Axboe <axboe@kernel.dk>, <linux-block@vger.kernel.org>,
<linux-scsi@vger.kernel.org>, Christoph Hellwig <hch@lst.de>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Hannes Reinecke <hare@suse.de>,
Shaun Tancheff <shaun@tancheff.com>,
Damien Le Moal <damien.lemoal@hgst.com>
Subject: Re: [PATCH v8 6/7] sd: Implement support for ZBC devices
Date: Tue, 18 Oct 2016 20:47:14 -0400 [thread overview]
Message-ID: <yq1pomxf9m5.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <1476772835-18541-7-git-send-email-damien.lemoal@wdc.com> (Damien Le Moal's message of "Tue, 18 Oct 2016 15:40:34 +0900")
>>>>> "Damien" == Damien Le Moal <damien.lemoal@wdc.com> writes:
Damien> Implement ZBC support functions to setup zoned disks, both
Damien> host-managed and host-aware models. Only zoned disks that
Damien> satisfy the following conditions are supported:
Damien> 1) All zones are the same size, with the exception of an
Damien> eventual last smaller runt zone.
Damien> 2) For host-managed disks, reads are unrestricted (reads are not
Damien> failed due to zone or write pointer alignement constraints).
Damien> Zoned disks that do not satisfy these 2 conditions are setup
Damien> with a capacity of 0 to prevent their use.
Damien> The function sd_zbc_read_zones, called from sd_revalidate_disk,
Damien> checks that the device satisfies the above two constraints. This
Damien> function may also change the disk capacity previously set by
Damien> sd_read_capacity for devices reporting only the capacity of
Damien> conventional zones at the beginning of the LBA range
Damien> (i.e. devices reporting rc_basis set to 0).
Damien> The capacity message output was moved out of sd_read_capacity
Damien> into a new function sd_print_capacity to include this eventual
Damien> capacity change by sd_zbc_read_zones. This new function also
Damien> includes a call to sd_zbc_print_zones to display the number of
Damien> zones and zone size of the device.
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
--
Martin K. Petersen Oracle Linux Engineering
WARNING: multiple messages have this Message-ID (diff)
From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-scsi@vger.kernel.org,
Christoph Hellwig <hch@lst.de>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Hannes Reinecke <hare@suse.de>,
Shaun Tancheff <shaun@tancheff.com>,
Damien Le Moal <damien.lemoal@hgst.com>
Subject: Re: [PATCH v8 6/7] sd: Implement support for ZBC devices
Date: Tue, 18 Oct 2016 20:47:14 -0400 [thread overview]
Message-ID: <yq1pomxf9m5.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <1476772835-18541-7-git-send-email-damien.lemoal@wdc.com> (Damien Le Moal's message of "Tue, 18 Oct 2016 15:40:34 +0900")
>>>>> "Damien" == Damien Le Moal <damien.lemoal@wdc.com> writes:
Damien> Implement ZBC support functions to setup zoned disks, both
Damien> host-managed and host-aware models. Only zoned disks that
Damien> satisfy the following conditions are supported:
Damien> 1) All zones are the same size, with the exception of an
Damien> eventual last smaller runt zone.
Damien> 2) For host-managed disks, reads are unrestricted (reads are not
Damien> failed due to zone or write pointer alignement constraints).
Damien> Zoned disks that do not satisfy these 2 conditions are setup
Damien> with a capacity of 0 to prevent their use.
Damien> The function sd_zbc_read_zones, called from sd_revalidate_disk,
Damien> checks that the device satisfies the above two constraints. This
Damien> function may also change the disk capacity previously set by
Damien> sd_read_capacity for devices reporting only the capacity of
Damien> conventional zones at the beginning of the LBA range
Damien> (i.e. devices reporting rc_basis set to 0).
Damien> The capacity message output was moved out of sd_read_capacity
Damien> into a new function sd_print_capacity to include this eventual
Damien> capacity change by sd_zbc_read_zones. This new function also
Damien> includes a call to sd_zbc_print_zones to display the number of
Damien> zones and zone size of the device.
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2016-10-19 0:47 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-18 6:40 [PATCH v8 0/7] ZBC / Zoned block device support Damien Le Moal
2016-10-18 6:40 ` Damien Le Moal
2016-10-18 6:40 ` [PATCH v8 1/7] block: Add 'zoned' queue limit Damien Le Moal
2016-10-18 6:40 ` Damien Le Moal
2016-10-18 6:42 ` Hannes Reinecke
2016-10-18 6:42 ` Hannes Reinecke
2016-10-18 6:40 ` [PATCH v8 2/7] blk-sysfs: Add 'chunk_sectors' to sysfs attributes Damien Le Moal
2016-10-18 6:40 ` Damien Le Moal
2016-10-18 16:43 ` Jeff Moyer
2016-10-18 16:43 ` Jeff Moyer
2016-10-18 23:17 ` Damien Le Moal
2016-10-18 23:17 ` Damien Le Moal
2016-10-18 6:40 ` [PATCH v8 3/7] block: update chunk_sectors in blk_stack_limits() Damien Le Moal
2016-10-18 6:40 ` Damien Le Moal
2016-10-18 6:40 ` [PATCH v8 4/7] block: Define zoned block device operations Damien Le Moal
2016-10-18 6:40 ` Damien Le Moal
2016-10-18 6:40 ` [PATCH v8 5/7] block: Implement support for zoned block devices Damien Le Moal
2016-10-18 6:40 ` Damien Le Moal
2016-10-18 6:40 ` [PATCH v8 6/7] sd: Implement support for ZBC devices Damien Le Moal
2016-10-18 6:40 ` Damien Le Moal
2016-10-18 16:58 ` Jeff Moyer
2016-10-18 16:58 ` Jeff Moyer
2016-10-18 18:22 ` Shaun Tancheff
2016-10-18 18:22 ` Shaun Tancheff
2016-10-19 13:23 ` Jeff Moyer
2016-10-19 0:44 ` Martin K. Petersen
2016-10-19 0:44 ` Martin K. Petersen
2016-10-19 13:21 ` Jeff Moyer
2016-10-19 13:21 ` Jeff Moyer
2016-10-19 0:47 ` Martin K. Petersen [this message]
2016-10-19 0:47 ` Martin K. Petersen
2016-10-18 6:40 ` [PATCH v8 7/7] blk-zoned: implement ioctls Damien Le Moal
2016-10-18 6:40 ` Damien Le Moal
2016-10-18 15:58 ` [PATCH v8 0/7] ZBC / Zoned block device support Jens Axboe
2016-10-18 23:15 ` Damien Le Moal
2016-10-18 23:15 ` Damien Le Moal
2016-10-19 0:46 ` Martin K. Petersen
2016-10-19 1:49 ` Jens Axboe
2016-10-19 1:53 ` Martin K. Petersen
2016-10-19 1:59 ` Jens Axboe
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=yq1pomxf9m5.fsf@sermon.lab.mkp.net \
--to=martin.petersen@oracle.com \
--cc=axboe@kernel.dk \
--cc=damien.lemoal@hgst.com \
--cc=damien.lemoal@wdc.com \
--cc=hare@suse.de \
--cc=hch@lst.de \
--cc=linux-block@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=shaun@tancheff.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.