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#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
#
name="sd" class="scsi" target=0 lun=0;
name="sd" class="scsi" target=1 lun=0;
name="sd" class="scsi" target=2 lun=0;
name="sd" class="scsi" target=3 lun=0;
name="sd" class="scsi" target=4 lun=0;
name="sd" class="scsi" target=5 lun=0;
name="sd" class="scsi" target=6 lun=0;
name="sd" class="scsi" target=7 lun=0;
name="sd" class="scsi" target=8 lun=0;
name="sd" class="scsi" target=9 lun=0;
name="sd" class="scsi" target=10 lun=0;
name="sd" class="scsi" target=11 lun=0;
name="sd" class="scsi" target=12 lun=0;
name="sd" class="scsi" target=13 lun=0;
name="sd" class="scsi" target=14 lun=0;
name="sd" class="scsi" target=15 lun=0;
#
# The following stub node is needed for pathological bottom-up
# devid resolution on a self-identifying transport.
#
name="sd" class="scsi-self-identifying";
#
# Associate the driver with devid resolution.
#
ddi-devid-registrant=1;
#
# Certain hardware RAID controllers have nonvolatile caches but do not
# support the SYNC_NV bit to restrict flushes to the volatile portion of
# the cache, if any. In order to get acceptable performance out of these
# devices, we need to suppress cache flushing on them. In most (hopefully
# all) cases, if the battery fails or the cache otherwise becomes volatile,
# the controller will switch to write-through mode, and ensure that any
# underlying drive cache is off. In this case, it should still be safe to
# dispense with cache flush commands. Controllers for which this is not the
# case should have cache-nonvolatile set unless data loss and corruption are
# acceptable.
#
# In addition, *all* devices have their retries capped at 1. There are an
# additional 2 retries for "victim" IOs if a reset is needed. Retrying is
# very rarely successful, and it is preferable to let ZFS do it where needed.
#
# For the Samsung client drives, users have seen data corruption when they use
# the advertised 512 byte sectors. The actual sector size of the flash
# translation layer is 4K, so it's relatively safe to make this change which
# annecdotally solves that problem.
#
sd-config-list=
"", "retries-timeout:1,retries-busy:1,retries-reset:1,retries-victim:2",
"DELL PERC H710", "cache-nonvolatile:true",
"DELL PERC H700", "cache-nonvolatile:true",
"DELL PERC/6i", "cache-nonvolatile:true",
"ATA Samsung SSD 830", "physical-block-size:4096",
"ATA Samsung SSD 840", "physical-block-size:4096",
"ATA Samsung SSD 850", "physical-block-size:4096",
"ATA Samsung SSD 860", "physical-block-size:4096";
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