+mgs_HOST=${mgs_HOST:-$mds_HOST}
+ost_HOST=${ost_HOST:-$(hostname)}
+ostfailover_HOST=${ostfailover_HOST}
+CLIENTS=""
+# FILESET variable is used by sanity.sh to verify fileset
+# feature, tests should pass even under subdirectory namespace.
+FILESET=${FILESET:-""}
+[[ -z "$FILESET" ]] || [[ "${FILESET:0:1}" = "/" ]] || FILESET="/$FILESET"
+
+TMP=${TMP:-/tmp}
+
+DAEMONSIZE=${DAEMONSIZE:-500}
+MDSCOUNT=${MDSCOUNT:-1}
+MDSDEVBASE=${MDSDEVBASE:-$TMP/${FSNAME}-mdt}
+MDSSIZE=${MDSSIZE:-250000}
+#
+# Format options of facets can be specified with these variables:
+#
+# - <facet_type>OPT
+#
+# Arguments for "--mkfsoptions" shall be specified with these
+# variables:
+#
+# - <fstype>_MKFS_OPTS
+# - <facet_type>_FS_MKFS_OPTS
+#
+# A number of other options have their own specific variables. See
+# mkfs_opts().
+#
+MDSOPT=${MDSOPT:-}
+MDS_FS_MKFS_OPTS=${MDS_FS_MKFS_OPTS:-}
+MDS_MOUNT_OPTS=${MDS_MOUNT_OPTS:-}
+# <facet_type>_MOUNT_FS_OPTS is the mount options specified when formatting
+# the underlying device by argument "--mountfsoptions"
+MDS_MOUNT_FS_OPTS=${MDS_MOUNT_FS_OPTS:-}
+
+MGSSIZE=${MGSSIZE:-$MDSSIZE}
+MGSOPT=${MGSOPT:-}
+MGS_FS_MKFS_OPTS=${MGS_FS_MKFS_OPTS:-}
+MGS_MOUNT_OPTS=${MGS_MOUNT_OPTS:-}
+MGS_MOUNT_FS_OPTS=${MGS_MOUNT_FS_OPTS:-}
+
+OSTCOUNT=${OSTCOUNT:-2}
+OSTDEVBASE=${OSTDEVBASE:-$TMP/${FSNAME}-ost}
+OSTSIZE=${OSTSIZE:-400000}
+OSTOPT=${OSTOPT:-}
+OST_FS_MKFS_OPTS=${OST_FS_MKFS_OPTS:-}
+OST_MOUNT_OPTS=${OST_MOUNT_OPTS:-}
+OST_MOUNT_FS_OPTS=${OST_MOUNT_FS_OPTS:-}
+OST_INDEX_LIST=${OST_INDEX_LIST:-}
+# Can specify individual ost devs with
+# OSTDEV1="/dev/sda"
+# on specific hosts with
+# ost1_HOST="uml2"
+# ost1_JRN="/dev/sdb1"
+#
+# For ZFS, ost devices can be specified via either or both of the following:
+# OSTZFSDEV1="${FSNAME}-ost1/ost1"
+# OSTDEV1="/dev/sdb1"
+#
+# OST indices can be specified as follows:
+# OSTINDEX1="1"
+# OSTINDEX2="2"
+# OSTINDEX3="4"
+# ......
+# or
+# OST_INDEX_LIST="[1,2,4-6,8]" # [n-m,l-k,...], where n < m and l < k, etc.
+#
+# The default index value of an individual OST is its facet number minus 1.
+# More specific ones override more general ones. See facet_index().
+