Eric Lee / smarc-ti-linux-kernel

10 Jan, 2014

2 commits

  • 229d4f112   target_core_alua: Referrals configfs integration ... Browse Code »
    2

    Referrals need an LBA map, which needs to be kept
    consistent across all target port groups. So
    instead of tying the map to the target port groups
    I've implemented a single attribute containing the
    entire map.

    Signed-off-by: Hannes Reinecke
    Signed-off-by: Nicholas Bellinger

    Hannes Reinecke
     
  • c66094bf3   target_core_alua: Referrals infrastructure ... Browse Code »

    Add infrastructure for referrals.

    v2 changes:

    - Fix unsigned long long division in core_alua_state_lba_dependent on
    32-bit (Fengguang + Chen + Hannes)
    - Fix compile warning in core_alua_state_lba_dependent (nab)
    - Convert segment_* + sectors variables in core_alua_state_lba_dependent
    to u64 (Hannes)

    Signed-off-by: Hannes Reinecke
    Signed-off-by: Nicholas Bellinger

    Hannes Reinecke
     

18 Dec, 2013

1 commit

21 Nov, 2013

3 commits

07 Nov, 2012

3 commits

  • de103c93a   target: pass sense_reason as a return value ... Browse Code »

    Pass the sense reason as an explicit return value from the I/O submission
    path instead of storing it in struct se_cmd and using negative return
    values. This cleans up a lot of the code pathes, and with the sparse
    annotations for the new sense_reason_t type allows for much better
    error checking.

    (nab: Convert spc_emulate_modesense + spc_emulate_modeselect to use
    sense_reason_t with Roland's MODE SELECT changes)

    Signed-off-by: Christoph Hellwig
    Cc: Roland Dreier
    Signed-off-by: Nicholas Bellinger

    Christoph Hellwig
     
  • c87fbd565   target: simplify alua support ... Browse Code »

    We always support ALUA for virtual backends, and never for physical ones. Simplify
    the code to just deal with these two cases and remove the superflous abstractions.

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

    Christoph Hellwig
     
  • 0fd97ccf4   target: kill struct se_subsystem_dev ... Browse Code »
    15

    Simplify the code a lot by killing the superflous struct se_subsystem_dev.
    Instead se_device is allocated early on by the backend driver, which allocates
    it as part of its own per-device structure, borrowing the scheme that is for
    example used for inode allocation.

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

    Christoph Hellwig
     

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
     

07 May, 2012

1 commit

04 Nov, 2011

1 commit

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