17 May, 2012

1 commit

• 5b9a4d728   target: Add MI_REPORT_TARGET_PGS ext. header + implict_trans_secs attribute ... Browse Code »

  This patch adds support for ALUA MI_REPORT_TARGET_PGS extended header
  format defined within SPC-4. It changes target core ALUA emulation logic
  within target_emulate_report_target_port_groups() to support both the
  extended and original length only header formats.

  It includes adding a new 'implict_trans_secs' attribute for each ALUA
  target port group to control the value returned to the application client
  for an recommended implict translation timeout in seconds. By default
  this value is currently set to zero, and limited up to 255 by virtue of
  using a single byte in the extended header format.

  This value is used by target_emulate_report_target_port_groups() within
  the extended header logic to set IMPLICIT TRANSITION TIME as defined by
  spc4r30.

  Cc: Hannes Reinecke
  Cc: Rob Evers
  Cc: Christoph Hellwig
  Cc: Roland Dreier
  Signed-off-by: Nicholas Bellinger

  Nicholas Bellinger

  2012-05-17 15:45:58 +0800  

07 May, 2012

1 commit

• 6bb35e009   target: replace ->execute_task with ->execute_cmd ... Browse Code »

  Make CDB emulation work on commands instead of tasks again as a preparation
  of removing tasks completely.

  Signed-off-by: Christoph Hellwig
  Signed-off-by: Nicholas Bellinger

  Christoph Hellwig

  2012-05-07 06:11:14 +0800  

04 Nov, 2011

1 commit

• e76a35d6c   target: pass the se_task to the CDB emulation callback ... Browse Code »

  We want to be able to handle all CDBs through it and remove hacks like
  always using the first task in a CDB in target_report_luns.

  Also rename the callback to ->execute_task to better describe its use.

  Signed-off-by: Christoph Hellwig
  Signed-off-by: Nicholas Bellinger

  Christoph Hellwig

  2011-11-04 16:00:17 +0800  

15 Jan, 2011

1 commit

• c66ac9db8   [SCSI] target: Add LIO target core v4.0.0-rc6 ... Browse Code »

  LIO target is a full featured in-kernel target framework with the
  following feature set:

  High-performance, non-blocking, multithreaded architecture with SIMD
  support.

  Advanced SCSI feature set:

  * Persistent Reservations (PRs)
  * Asymmetric Logical Unit Assignment (ALUA)
  * Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
  * Full Error Recovery (ERL=0,1,2)
  * Active/active task migration and session continuation (ERL=2)
  * Thin LUN provisioning (UNMAP and WRITE_SAMExx)

  Multiprotocol target plugins

  Storage media independence:

  * Virtualization of all storage media; transparent mapping of IO to LUNs
  * No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
  * Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.

  Standards compliance:

  * Full compliance with IETF (RFC 3720)
  * Full implementation of SPC-4 PRs and ALUA

  Significant code cleanups done by Christoph Hellwig.

  [jejb: fix up for new block bdev exclusive interface. Minor fixes from
  Randy Dunlap and Dan Carpenter.]
  Signed-off-by: Nicholas A. Bellinger
  Signed-off-by: James Bottomley

  Nicholas Bellinger

  2011-01-15 00:12:29 +0800