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From: mwilck@suse.com
To: Mike Snitzer <snitzer@redhat.com>,
	Alasdair G Kergon <agk@redhat.com>,
	Bart Van Assche <Bart.VanAssche@sandisk.com>,
	dm-devel@redhat.com, Hannes Reinecke <hare@suse.de>
Cc: Daniel Wagner <dwagner@suse.de>, Martin Wilck <mwilck@suse.com>,
	linux-block@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
	Christoph Hellwig <hch@lst.de>
Subject: [dm-devel] [PATCH v3 0/2] dm: dm_blk_ioctl(): implement failover for SG_IO on dm-multipath
Date: Fri, 11 Jun 2021 22:25:07 +0200	[thread overview]
Message-ID: <20210611202509.5426-1-mwilck@suse.com> (raw)

From: Martin Wilck <mwilck@suse.com>

Hello Mike,

here is v3 of my attempt to add retry logic to SG_IO on dm-multipath devices.
Sorry that it took such a long time.

Regards
Martin

Changes v2->v3:

 - un-inlined scsi_result_to_blk_status again, and move the helper
   __scsi_result_to_blk_status to block/scsi_ioctl.c instead
   (Bart v. Assche)
 - open-coded the status/msg/host/driver-byte -> result conversion
   where the standard SCSI helpers aren't usable (Bart v. Assche)
    
Changes v1->v2:

 - applied modifications from Mike Snitzer
 - moved SG_IO dependent code to a separate file, no scsi includes in
   dm.c any more
 - made the new code depend on a configuration option 
 - separated out scsi changes, made scsi_result_to_blk_status()
   inline to avoid dependency of dm_mod from scsi_mod (Paolo Bonzini)

Martin Wilck (2):
  scsi: export __scsi_result_to_blk_status() in scsi_ioctl.c
  dm: add CONFIG_DM_MULTIPATH_SG_IO - failover for SG_IO on dm-multipath

 block/scsi_ioctl.c         |  52 ++++++++++++++-
 drivers/md/Kconfig         |  11 ++++
 drivers/md/Makefile        |   4 ++
 drivers/md/dm-core.h       |   5 ++
 drivers/md/dm-rq.h         |  11 ++++
 drivers/md/dm-scsi_ioctl.c | 127 +++++++++++++++++++++++++++++++++++++
 drivers/md/dm.c            |  20 +++++-
 drivers/scsi/scsi_lib.c    |  29 +--------
 include/linux/blkdev.h     |   3 +
 9 files changed, 229 insertions(+), 33 deletions(-)
 create mode 100644 drivers/md/dm-scsi_ioctl.c

-- 
2.31.1


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             reply	other threads:[~2021-06-11 20:39 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-11 20:25 mwilck [this message]
2021-06-11 20:25 ` [dm-devel] [PATCH v3 1/2] scsi: export __scsi_result_to_blk_status() in scsi_ioctl.c mwilck
2021-06-11 20:25 ` [dm-devel] [PATCH v3 2/2] dm: add CONFIG_DM_MULTIPATH_SG_IO - failover for SG_IO on dm-multipath mwilck
2021-06-15 17:10   ` Mike Snitzer
2021-06-16  9:56     ` Martin Wilck
2021-06-14 15:15 ` [dm-devel] [PATCH v3 0/2] dm: dm_blk_ioctl(): implement " Mike Snitzer
2021-06-15 10:54   ` Martin Wilck
2021-06-15 17:11     ` Mike Snitzer

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