[Xen-devel] [PATCH v4 5/5] Scripts to create and delete xen-scsiback nodes in Linux target framework

[Olaf Hering <olaf@xxxxxxxxx>]

Just to make them public, not meant for merging:
The scripts used during development to create a bunch of SCSI devices in
dom0 using the Linux target framework. targetcli3 and rtslib3 is used.

A patch is required for python-rtslib:
http://article.gmane.org/gmane.linux.scsi.target.devel/8146

Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
---
 tools/misc/Makefile                      |  4 ++
 tools/misc/target-create-xen-scsiback.sh | 94 ++++++++++++++++++++++++++++++++
 tools/misc/target-delete-xen-scsiback.sh | 39 +++++++++++++
 3 files changed, 137 insertions(+)

diff --git a/tools/misc/Makefile b/tools/misc/Makefile
index ccd36af..be101d8 100644
--- a/tools/misc/Makefile
+++ b/tools/misc/Makefile
@@ -32,6 +32,8 @@ INSTALL_SBIN += $(INSTALL_SBIN-y)
 
 # Everything to be installed in a private bin/
 INSTALL_PRIVBIN                += xenpvnetboot
+INSTALL_PRIVBIN                += target-create-xen-scsiback.sh
+INSTALL_PRIVBIN                += target-delete-xen-scsiback.sh
 
 # Everything to be installed
 TARGETS_ALL := $(INSTALL_BIN) $(INSTALL_SBIN) $(INSTALL_PRIVBIN)
@@ -42,6 +44,8 @@ TARGETS_COPY += xen-ringwatch
 TARGETS_COPY += xencons
 TARGETS_COPY += xencov_split
 TARGETS_COPY += xenpvnetboot
+TARGETS_COPY += target-create-xen-scsiback.sh
+TARGETS_COPY += target-delete-xen-scsiback.sh
 
 # Everything which needs to be built
 TARGETS_BUILD := $(filter-out $(TARGETS_COPY),$(TARGETS_ALL))
diff --git a/tools/misc/target-create-xen-scsiback.sh 
b/tools/misc/target-create-xen-scsiback.sh
new file mode 100644
index 0000000..fc49c2e
--- /dev/null
+++ b/tools/misc/target-create-xen-scsiback.sh
@@ -0,0 +1,94 @@
+#!/usr/bin/env bash
+unset LANG
+unset ${!LC_*}
+set -x
+set -e
+
+modprobe --version
+targetcli --version
+udevadm --version
+blockdev --version
+parted --version
+sfdisk --version
+mkswap --version
+
+configfs=/sys/kernel/config
+target_path=$configfs/target
+
+num_luns=4
+num_hosts=4
+
+get_wwn() {
+       sed '
+       s@-@@g
+       s@^\(.\{16\}\)\(.*\)@\1@
+       ' /proc/sys/kernel/random/uuid
+}
+
+if test ! -d "${target_path}"
+then
+       modprobe -v configfs
+       mount -vt configfs configfs $configfs
+       modprobe -v target_core_mod
+fi
+modprobe -v xen-scsiback
+
+host=0
+while test $host -lt $num_hosts
+do
+       host=$(( $host + 1 ))
+       lun=0
+       loopback_wwn="naa.`get_wwn`"
+       pvscsi_wwn="naa.`get_wwn`"
+       targetcli /loopback create ${loopback_wwn}
+       targetcli /xen-pvscsi create ${pvscsi_wwn}
+       while test $lun -lt $num_luns
+       do
+               : h $host l $lun
+               f_file=/dev/shm/Fileio.${host}.${lun}.file
+               f_uuid=/dev/shm/Fileio.${host}.${lun}.uuid
+               f_link=/dev/shm/Fileio.${host}.${lun}.link
+               fileio_name="fio_${host}.${lun}"
+               pscsi_name="ps_${host}.${lun}"
+
+               targetcli /backstores/fileio create name=${fileio_name} 
"file_or_dev=${f_file}" size=$((1024*1024 * 8 )) sparse=true
+               targetcli /loopback/${loopback_wwn}/luns create 
/backstores/fileio/${fileio_name} $lun
+
+               udevadm settle --timeout=4
+
+               vpd_uuid="`sed -n '/^T10 VPD Unit Serial 
Number:/s@^[^:]\+:[[:blank:]]\+@@p' 
/sys/kernel/config/target/core/fileio_*/${fileio_name}/wwn/vpd_unit_serial`"
+               if test -z "${vpd_uuid}"
+               then
+                       exit 1
+               fi
+               echo "${vpd_uuid}" > "${f_uuid}"
+               by_id="`echo ${vpd_uuid} | sed 
's@-@@g;s@^\(.\{25\}\)\(.*\)@scsi-36001405\1@'`"
+               ln -sfvbn "/dev/disk/by-id/${by_id}" "${f_link}"
+
+               blockdev --rereadpt "${f_link}"
+               udevadm settle --timeout=4
+               echo 1,12,S | sfdisk "${f_link}"
+               udevadm settle --timeout=4
+               blockdev --rereadpt "${f_link}"
+               udevadm settle --timeout=4
+               parted -s "${f_link}" unit s print
+
+               d_link="`readlink \"${f_link}\"`"
+               if test -n "${d_link}"
+               then
+                       p_link="${d_link}-part1"
+                       ls -l "${p_link}"
+                       mkswap -L "swp_${fileio_name}" "${p_link}"
+                       udevadm settle --timeout=4
+                       blockdev --rereadpt "${f_link}"
+                       udevadm settle --timeout=4
+                       parted -s "${f_link}" unit s print
+               fi
+
+               targetcli /backstores/pscsi create "dev=${f_link}" 
"${pscsi_name}"
+               targetcli /xen-pvscsi/${pvscsi_wwn}/tpg1/luns create 
"/backstores/pscsi/${pscsi_name}" $lun
+
+               lun=$(( $lun + 1 ))
+       done
+done
+
diff --git a/tools/misc/target-delete-xen-scsiback.sh 
b/tools/misc/target-delete-xen-scsiback.sh
new file mode 100644
index 0000000..a90bd82
--- /dev/null
+++ b/tools/misc/target-delete-xen-scsiback.sh
@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+unset LANG
+unset ${!LC_*}
+set -x
+set -e
+
+targetcli --version
+
+configfs=/sys/kernel/config
+target_path=$configfs/target
+
+cd "${target_path}"
+cd xen-pvscsi
+for wwn in `ls -d naa.*`
+do
+       targetcli /xen-pvscsi delete $wwn
+done
+cd "${target_path}"
+cd core
+for name in `ls -d pscsi_*/*/wwn`
+do
+       name=${name%/wwn}
+       name=${name##*/}
+       targetcli /backstores/pscsi delete $name
+done
+cd "${target_path}"
+cd loopback
+for wwn in `ls -d naa.*`
+do
+       targetcli /loopback delete $wwn
+done
+cd "${target_path}"
+cd core
+for name in `ls -d fileio_*/*/wwn`
+do
+       name=${name%/wwn}
+       name=${name##*/}
+       targetcli /backstores/fileio delete $name
+done

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