[stgt] [PATCH RESEND 0/3] Add SCSI cmd statistics per ITL nexus

[nezhinsky at gmail.com]

From: Alexander Nezhinsky <alexandern at mellanox.com>

Add statistics on SCSI cmd execution. Reads and writes are counted separately.
Total transfer in bytes and total number of commands are accummulated.
Number of commands submitted for execution to backing-store are counted
separately from the number of commands completed. This may provide some clues
on the i/o queues length, as well as some debugging information.

Stat info is retrieved using a new --op stat applicable to various modes.
When relevant, iscsi conn statistics (currently existing counters) is shown.
iser connections accumulate statistics just as plain iscsi ones,
counting rdma transfers as data-in and data-out depending on the direction.

Alexander Nezhinsky (3):
  Add infrastructure for statistics on SCSI device level
  Show new statistics in various modes; integrate scsi and iscsi stats
    where relevant
  collect isci conn stats for iser connections

 usr/driver.h       |    1 +
 usr/iscsi/conn.c   |   26 ++++++++
 usr/iscsi/iscsid.c |   33 +++------
 usr/iscsi/iscsid.h |    4 ++
 usr/iscsi/iser.c   |   16 +++--
 usr/iscsi/target.c |  165 ++++++++++++++++++++++++++++++++++++---------
 usr/mgmt.c         |   64 ++++++++++++++++++
 usr/scsi.c         |   18 ++++-
 usr/target.c       |  188 +++++++++++++++++++++++++++++++++++++++++++---------
 usr/target.h       |    2 +-
 usr/tgtadm.c       |    7 +-
 usr/tgtadm.h       |    2 +-
 usr/tgtd.h         |   36 +++++++++-
 13 files changed, 464 insertions(+), 98 deletions(-)

-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe stgt" in
the body of a message to majordomo at vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html