[PULL REQUEST] md updates for 3.9

[PULL REQUEST] md updates for 3.9

[NeilBrown]

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The following changes since commit 19f949f52599ba7c3f67a5897ac6be14bfcb1200:

  Linux 3.8 (2013-02-18 15:58:34 -0800)

are available in the git repository at:

  git://neil.brown.name/md tags/md-3.9

for you to fetch changes up to f3378b48705154b9089affb2d2e939622aea68f1:

  md: expedite metadata update when switching  read-auto -> active (2013-02-28 11:59:03 +1100)

Thanks,
NeilBrown



----------------------------------------------------------------
md updates for 3.9

mostly little bugfixes.
Only "feature" is a new RAID10 layout which slightly
improves the number of sets of devices that can concurrently
fail, without data loss.

----------------------------------------------------------------
Joe Lawrence (1):
      md: raid1,10: Handle REQ_WRITE_SAME flag in write bios

Jonathan Brassow (4):
      MD RAID10: Minor non-functional code changes
      MD RAID10: Improve redundancy for 'far' and 'offset' algorithms (part 1)
      MD RAID10: Improve redundancy for 'far' and 'offset' algorithms (part 2)
      DM RAID: Add support for MD's RAID10 "far" and "offset" algorithms

NeilBrown (6):
      md: fix two bugs when attempting to resize RAID0 array.
      md: raid0: fix error return from create_stripe_zones.
      md/raid0: improve error message when converting RAID4-with-spares to RAID0
      md/raid1,raid10: fix deadlock with freeze_array()
      md: remove CONFIG_MULTICORE_RAID456
      md: expedite metadata update when switching  read-auto -> active

Sebastian Riemer (1):
      md: protect against crash upon fsync on ro array

 Documentation/device-mapper/dm-raid.txt |  44 +++++++++++++---
 drivers/md/Kconfig                      |  11 ----
 drivers/md/dm-raid.c                    | 123 ++++++++++++++++++++++++++++++++++++-------
 drivers/md/md.c                         |  19 ++++++-
 drivers/md/raid0.c                      |  13 +++--
 drivers/md/raid1.c                      |   8 ++-
 drivers/md/raid10.c                     |  97 ++++++++++++++++++++++++++--------
 drivers/md/raid10.h                     |   5 ++
 drivers/md/raid5.c                      |  38 +------------
 9 files changed, 256 insertions(+), 102 deletions(-)

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Re: [PULL REQUEST] md updates for 3.9

[Alexander Lyakas]

Hi Neil,

On Mon, Mar 4, 2013 at 2:16 AM, NeilBrown <neilb@suse.de> wrote:
>
> The following changes since commit
> 19f949f52599ba7c3f67a5897ac6be14bfcb1200:
>
>   Linux 3.8 (2013-02-18 15:58:34 -0800)
>
> are available in the git repository at:
>
>   git://neil.brown.name/md tags/md-3.9
>
> for you to fetch changes up to f3378b48705154b9089affb2d2e939622aea68f1:
>
>   md: expedite metadata update when switching  read-auto -> active
> (2013-02-28 11:59:03 +1100)
>
> Thanks,
> NeilBrown
>
>
>
> ----------------------------------------------------------------
> md updates for 3.9
>
> mostly little bugfixes.
> Only "feature" is a new RAID10 layout which slightly
> improves the number of sets of devices that can concurrently
> fail, without data loss.
>
> ----------------------------------------------------------------
> Joe Lawrence (1):
>       md: raid1,10: Handle REQ_WRITE_SAME flag in write bios

Can this patch be ported to 3.8.x kernel (e.g., 3.8.2)?

Currently, we have code that calls blkdev_issue_zeroout() to an MD
raid1 block device, but it calls blkdev_issue_write_same(), which is
not supported properly by MD raid1 in this kernel:( So we get junk
instead of zeroed data...

Any advice?

Thanks,
Alex.





>
> Jonathan Brassow (4):
>       MD RAID10: Minor non-functional code changes
>       MD RAID10: Improve redundancy for 'far' and 'offset' algorithms
> (part 1)
>       MD RAID10: Improve redundancy for 'far' and 'offset' algorithms
> (part 2)
>       DM RAID: Add support for MD's RAID10 "far" and "offset" algorithms
>
> NeilBrown (6):
>       md: fix two bugs when attempting to resize RAID0 array.
>       md: raid0: fix error return from create_stripe_zones.
>       md/raid0: improve error message when converting RAID4-with-spares to
> RAID0
>       md/raid1,raid10: fix deadlock with freeze_array()
>       md: remove CONFIG_MULTICORE_RAID456
>       md: expedite metadata update when switching  read-auto -> active
>
> Sebastian Riemer (1):
>       md: protect against crash upon fsync on ro array
>
>  Documentation/device-mapper/dm-raid.txt |  44 +++++++++++++---
>  drivers/md/Kconfig                      |  11 ----
>  drivers/md/dm-raid.c                    | 123
> ++++++++++++++++++++++++++++++++++++-------
>  drivers/md/md.c                         |  19 ++++++-
>  drivers/md/raid0.c                      |  13 +++--
>  drivers/md/raid1.c                      |   8 ++-
>  drivers/md/raid10.c                     |  97
> ++++++++++++++++++++++++++--------
>  drivers/md/raid10.h                     |   5 ++
>  drivers/md/raid5.c                      |  38 +------------
>  9 files changed, 256 insertions(+), 102 deletions(-)