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|
#!/bin/bash
set -eo pipefail
die()
{
echo "$@" >&2
exit 1
}
cwd=$(pwd)
backing_filename="backingfile"
target_name="iqn.2024-10.com.test.storage:target01"
localhost="127.0.0.1"
portal="${localhost}:3260"
initiator_name="iqn.2024-10.com.test.storage:initiator01"
# Install necessary iSCSI modules which are in -extra in Ubuntu
if dpkg-vendor --derives-from Ubuntu; then
apt-get install -y "linux-modules-extra-$(uname -r)" \
|| die "Could not install iSCSI linux modules"
fi
# Load iSCSI/TCP data-path module
modprobe iscsi_tcp \
|| die "Failed modprobe of iscsi_tcp kernel module"
lsmod | grep scsi
# create backing file
targetcli backstores/fileio create name="${backing_filename}" size=1M file_or_dev="${cwd}/${backing_filename}" \
|| die "Failed to create backing file"
# create Target Portal Group (TPG)
targetcli iscsi/ create "${target_name}" \
|| die "Failed to create target"
# cleanup any existing portal
targetcli iscsi/${target_name}/tpg1/portals delete ip_address=0.0.0.0 ip_port=3260 \
|| echo "-"
# create new portal
targetcli iscsi/${target_name}/tpg1/portals create \
|| die "Failed to create portal"
# set backing file to target
targetcli "iscsi/${target_name}/tpg1/luns" create "/backstores/fileio/${backing_filename}" \
|| die "Failed to set backing file"
# set acls
targetcli iscsi/${target_name}/tpg1/ set attribute generate_node_acls=1 \
|| die "Failed to set acls node generation"
targetcli iscsi/${target_name}/tpg1/acls create "${initiator_name}" \
|| die "Failed to set acls"
echo "InitiatorName=${initiator_name}" > "/etc/iscsi/initiatorname.iscsi"
targetcli "ls"
systemctl restart iscsid \
|| die "Failed to restart iscsid"
systemctl restart open-iscsi \
|| die "Failed to restart open-iscsi"
# scan for targets (locally)
iscsiadm --mode discovery --type sendtargets --portal "${localhost}" \
|| die "Failed to scan for local targets"
# login and establish disk node (/dev/sdX)
iscsiadm --mode node --targetname "${target_name}" --portal "${portal}" --login \
|| die "Failed to login in and establish disk node"
udevadm settle --timeout 60 \
|| die "Failed during udevadm settle"
# Determine the disk device name
disk=$(lsscsi -g | grep ${backing_filename} | head -n1 | awk '{ print $6 }')
echo
echo "Status after initial setup"
sginfo "${disk}" | grep "^Product:" \
|| die "Failed to query for product name from sginfo"
ls -l "${disk}" \
|| die "Failed to find ${disk}"
echo
echo "Check SCSI Logical Unit Number (LUN) report"
sg_luns "${disk}" | grep "Lun list length = " \
|| die "Failed to get lun for ${disk}"
echo
echo "Lookup op codes, checking for op code 88 'Read'"
sg_opcodes "${disk}" | grep "^ 88" | grep "Read" \
|| die "Failed check of opcodes on ${disk}"
echo
echo "Reset the disk"
sg_reset "${disk}" \
|| die "Failed to reset disk"
echo
echo "Scan the disk to check that it is active"
sg_scan -av "${disk}" \
|| die "Failed to scan disk for activity"
echo
echo "Check the SCSI VERIFY command is handled and succeeds"
sg_verify "${disk}" \
|| die "Failed to check verify command"
echo
echo "Read the mode pages with the SCSI MODE SENSE command"
sg_modes "${disk}" \
|| die "Failed to read mode pages"
echo
echo "Check data write behavior"
sg_dd bs=512 if=/dev/random of="${disk}" count=1000 2>/dev/null \
|| "Failed writing to ${disk}"
echo
echo "Check data read behavior"
sg_dd bs=512 if=/etc/lsb-release of="${disk}" 2>/dev/null \
|| "Failed writing lsb-release info to ${disk}"
sg_dd count=1 if="${disk}" of=/dev/stdout 2>/dev/null | grep '^DISTRIB_ID' 2>/dev/null \
|| "Failed reading from ${disk}"
|
