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NEX-8460 make sd_io_time a per-disk tunable and set it appropriately for virtual disks
Reviewed by: Dan Fields <dan.fields@nexenta.com>
Reviewed by: Roman Strashkin <roman.strashkin@nexenta.com>
NEX-14507 slow-io detector should be disabled for virtual disks
Reviewed by: Dan Fields <dan.fields@nexenta.com>
Reviewed by: Cynthia Eastham <cynthia.eastham@nexenta.com>
Reviewed by: Rick McNeal <rick.mcneal@nexenta.com>
OS-14 sd attach should not issue potentially slow scsi commands (ddi-forceattach=1)
    
      
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          --- old/usr/src/uts/intel/io/scsi/targets/sd.conf
          +++ new/usr/src/uts/intel/io/scsi/targets/sd.conf
   1    1  #
   2    2  # CDDL HEADER START
   3    3  #
   4    4  # The contents of this file are subject to the terms of the
   5    5  # Common Development and Distribution License (the "License").
   6    6  # You may not use this file except in compliance with the License.
   7    7  #
   8    8  # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9    9  # or http://www.opensolaris.org/os/licensing.
  10   10  # See the License for the specific language governing permissions
  11   11  # and limitations under the License.
  12   12  #
  13   13  # When distributing Covered Code, include this CDDL HEADER in each
  
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  14   14  # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15   15  # If applicable, add the following below this CDDL HEADER, with the
  16   16  # fields enclosed by brackets "[]" replaced with your own identifying
  17   17  # information: Portions Copyright [yyyy] [name of copyright owner]
  18   18  #
  19   19  # CDDL HEADER END
  20   20  #
  21   21  
  22   22  #
  23   23  # Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
       24 +# Copyright 2017 Nexenta Systems, Inc.
  24   25  #
  25   26  
  26   27  name="sd" class="scsi" target=0 lun=0;
  27   28  name="sd" class="scsi" target=1 lun=0;
  28   29  name="sd" class="scsi" target=2 lun=0;
  29   30  name="sd" class="scsi" target=3 lun=0;
  30   31  name="sd" class="scsi" target=4 lun=0;
  31   32  name="sd" class="scsi" target=5 lun=0;
  32   33  name="sd" class="scsi" target=6 lun=0;
  33   34  name="sd" class="scsi" target=7 lun=0;
  34   35  name="sd" class="scsi" target=8 lun=0;
  
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  35   36  name="sd" class="scsi" target=9 lun=0;
  36   37  name="sd" class="scsi" target=10 lun=0;
  37   38  name="sd" class="scsi" target=11 lun=0;
  38   39  name="sd" class="scsi" target=12 lun=0;
  39   40  name="sd" class="scsi" target=13 lun=0;
  40   41  name="sd" class="scsi" target=14 lun=0;
  41   42  name="sd" class="scsi" target=15 lun=0;
  42   43  
  43   44  #
  44   45  # The following stub node is needed for pathological bottom-up
  45      -# devid resolution on a self-identifying transport. 
       46 +# devid resolution on a self-identifying transport.
  46   47  #
  47   48  name="sd" class="scsi-self-identifying";
  48   49  
  49   50  #
  50   51  # Associate the driver with devid resolution.
  51   52  #
  52   53  ddi-devid-registrant=1;
       54 +
       55 +#
       56 +# Force attach to avoid timing problems with deferred attach
       57 +# and tools like format(1M).
       58 +#
       59 +ddi-forceattach=1;
       60 +
       61 +sd-config-list=
       62 +        # Set appropriate timeout and disable slow-io detector
       63 +        "VMware  Virtual disk", "io-time:180,slow-io-threshold:0";
    
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