On 04/04/2016 07:06 AM, Shaun Tancheff wrote: > As Host Aware drives are becoming available we would like to be able > to make use of such drives. This series is also intended to be suitable > for use by Host Managed drives. > > The following series is hopefully a reasonable start at adding such > support. > > ZAC/ZBC drives add new commands. Some of this support is already in > progress by Hannes Reinecke <hare@xxxxxxx>. This patch finishes up a > couple of scsi <-> ata translations. These patches will be re-worked > or dropped in favor of Hannes' next release. > > With the ZAC support in place adding some additional flags to struct bio > to identify the new drive requests (Report zones, Open/Close/Reset zones). > > With the bio support in place there are two new users added. The first > user is an ioctl the second user is a device mapper target. > The user space tools for the ioctl is intended to be acceptable for > inclusion by util-linux. Initial patches for 2.20.1 and 2.21.1 > can be found here: > https://github.com/Seagate/ZDM-Device-Mapper/tree/master/patches/util-linux > > Please consider the new device mapper target, as an RFC. > > Patch "Limit bio_endio recursion" is based on an older patch that was > not picked up. It is not strictly necessary but it does reduce stack > usage, especially for badly behaved DM targets that return > DM_MAPIO_REQUEUE too frequently. > > Patch "Use PID to seed Stream Id" depends on: > https://lkml.kernel.org/r/1457107853-8689-1-git-send-email-axboe@xxxxxx > > Patch "Block Zoned Control for Userspace" is a hold over for user space > tools that have not been updated to use the new block ioctl. The patch > will be dropped when zdm-tools is updated and sd-tools is replaced > with util-linux. > > This series is based on Linus v4.5 kernel. > > Code is also available on github here: > https://github.com/Seagate/ZDM-Device-Mapper > > And a fork of Linus kernel with ZDM branches is available here: > https://github.com/stancheff/linux > > Shaun Tancheff (12): > Add ZBC <-> ZAC xlat support for report, open, close, reset, finish > ata-scsi: Translate ReportZones result to big endian > BUG: Losing bits on request.cmd_flags > Add bio/request flags for using ZBC/ZAC commands > Add ioctl to issue ZBC/ZAC commands via block layer > Add ata pass-through path for ZAC commands. > ZDM: New DM target 'zoned' > RAID 4/5/6: Indicate parity blocks as 'META' > RAID 4/5/6: Fine-grained TRIM enable for ZDM > Limit bio_endio recursion > Stream Id: Use PID to seed Stream Id construction. > Block Zoned Control for Userspace > Please hold off with this series for the moment. I've just finished up porting my ZAC/ZBC patchset and will be posting an update shortly. I'm happy to integrate any of your fixes. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
