Hello Mike, Any comments on this series ? Is it possible that you consider it for 4.12 ? Best regards. On 4/21/17 12:55, damien.lemoal@xxxxxxx wrote: > From: Damien Le Moal <damien.lemoal@xxxxxxx> > > This series introduces zoned block device support to the device mapper > infrastructure. Pathces are as follows: > > - Patch 1: Add a new target type feature flag to indicate if a target type > supports host-managed zoned block devices. This prevents using these drives > with the current target types since none of them have the proper support > implemented and will not operate properly with these drives. > - Patch 2: If a target device is a zoned block device, check that the range of > LBAs mapped is aligned to the device zone size and that the device start > offset also aligns to zone boundaries. This is necessary for zone reset and > zone report correct execution. > - Patch 3: Check that the different target devices of a table have compatible > zone sizes and models. This is necessary for target types that expose a zone > model different from the underlying device. > - Patch 4: Fix handling of REQ_OP_ZONE_RESET bios > - Patch 5: Fix handling of REQ_OP_ZONE_REPORT bios > - Patch 6: Introduce a new helper function to reverse map a device zone report > to the target LBA range > - Patch 7: Add support for host-managed zoned block devices to dm-flakey. This > is necessary for testing file systems supporting natively these drives (e.g. > f2fs). > - Patch 8: Add support for for zoned block devices to dm-linear. This can have > useful applications during development and testing (e.g. allow creating > smaller zoned devices with different combinations and positions of zones). > There are also interesting applications for production, for instance, the > ability to aggregate conventional zones of different drives to create a > regular disk. > - Patch 9: Add sequential write enforcement to dm_kcopyd_copy so that > sequential zones of a host-managed zoned block device can be specified as > destinations. > - Patch 10: New dm-zoned target type (this was already sent for review twice). > This resend adds modifications suggested by Hannes to implement reclaim > using dm-kcopyd. dm-zoned depends on patch 9. > > As always, comments and reviews are welcome. > > Damien Le Moal (10): > dm-table: Introduce DM_TARGET_ZONED_HM feature > dm-table: Check device area zone alignment > dm-table: Check block devices zone model compatibility > dm: Fix REQ_OP_ZONE_RESET bio handling > dm: Fix REQ_OP_ZONE_REPORT bio handling > dm: Introduce dm_remap_zone_report() > dm-flakey: Add support for zoned block devices > dm-linear: Add support for zoned block devices > dm-kcopyd: Add sequential write feature > dm-zoned: Drive-managed zoned block device target > > Documentation/device-mapper/dm-zoned.txt | 154 +++ > drivers/md/Kconfig | 19 + > drivers/md/Makefile | 2 + > drivers/md/dm-flakey.c | 21 +- > drivers/md/dm-kcopyd.c | 68 +- > drivers/md/dm-linear.c | 14 +- > drivers/md/dm-table.c | 145 ++ > drivers/md/dm-zoned-io.c | 998 ++++++++++++++ > drivers/md/dm-zoned-metadata.c | 2195 ++++++++++++++++++++++++++++++ > drivers/md/dm-zoned-reclaim.c | 535 ++++++++ > drivers/md/dm-zoned.h | 528 +++++++ > drivers/md/dm.c | 93 +- > include/linux/device-mapper.h | 16 + > include/linux/dm-kcopyd.h | 1 + > 14 files changed, 4783 insertions(+), 6 deletions(-) > create mode 100644 Documentation/device-mapper/dm-zoned.txt > create mode 100644 drivers/md/dm-zoned-io.c > create mode 100644 drivers/md/dm-zoned-metadata.c > create mode 100644 drivers/md/dm-zoned-reclaim.c > create mode 100644 drivers/md/dm-zoned.h > -- Damien Le Moal, Ph.D. Sr Manager, System Software Group, Western Digital Research Damien.LeMoal@xxxxxxx Tel: (+81) 0466-98-3593 (Ext. 51-3593) 1 kirihara-cho, Fujisawa, Kanagawa, 252-0888 Japan www.wdc.com, www.hgst.com
