[linux-target-packaging] Bug#880576: targetcli-fb: Cannot create PSCSI backend for SCSI tape drive

[Herbert Nachtnebel]

Package: targetcli-fb
Version: 2.1.43-1
Severity: normal
Tags: upstream

Dear Maintainer,

exporting a local SCSI tape drive using targetcli is not possible. The used
SCSI tape
drive is an older HP Ultrium-2 SCSI drive connected via a Adaptec 29320ALP U320
PCIe
SCSI controller to the host.  The host is a freshly set up Debian 9.2 system.

# lscpi -v

03:04.0 SCSI storage controller: Adaptec ASC-29320ALP U320 (rev 10)
        Subsystem: Adaptec ASC-29320LPE PCIe U320
        Flags: bus master, 66MHz, slow devsel, latency 64, IRQ 17
        I/O ports at a800 [disabled] [size=256]
        Memory at fe6fe000 (64-bit, non-prefetchable) [size=8K]
        I/O ports at a400 [disabled] [size=256]
        Expansion ROM at fe600000 [disabled] [size=512K]
        Capabilities: <access denied>
        Kernel driver in use: aic79xx
        Kernel modules: aic79xx

# lscsi -g

[0:0:0:0]    cd/dvd  PLEXTOR  DVD-ROM PX-130A  1.02  /dev/sr0   /dev/sg2
[2:0:0:0]    tape    HP       Ultrium 2-SCSI   F63D  /dev/st0   /dev/sg0
[3:0:0:0]    disk    ATA      Samsung SSD 850  2B6Q  /dev/sdb   /dev/sg3
[4:0:0:0]    disk    ATA      HGST HTS725050A7 B550  /dev/sdc   /dev/sg4
[4:0:1:0]    cd/dvd  HL-DT-ST BD-RE  BH16NS40  1.03  /dev/sr1   /dev/sg5

# uname -a
Linux zahadum 4.9.0-4-amd64 #1 SMP Debian 4.9.51-1 (2017-09-28) x86_64
GNU/Linux

# targetcli

targetcli shell version 2.1.fb43
Copyright 2011-2013 by Datera, Inc and others.
For help on commands, type 'help'.

/> ls
o- /
................................................................................
[...]
  o- backstores
..................................................................... [...]
  | o- block ......................................................... [Storage
Objects: 0]
  | o- fileio ........................................................ [Storage
Objects: 0]
  | o- pscsi ......................................................... [Storage
Objects: 0]
  | o- ramdisk ....................................................... [Storage
Objects: 0]
  o- iscsi ...................................................................
[Targets: 0]
  o- loopback ................................................................
[Targets: 0]
  o- sbp .....................................................................
[Targets: 0]
  o- vhost ...................................................................
[Targets: 0]
/> cd backstores/pscsi
/backstores/pscsi> ls
o- pscsi ............................................................. [Storage
Objects: 0]

/backstores/pscsi> create ultrium2 dev=/dev/st0
Cannot find SCSI device by path, and dev parameter not in H:C:T:L format:
/dev/st0

/backstores/pscsi> create ultrium2 dev=/dev/sg0
Cannot find SCSI device by path, and dev parameter not in H:C:T:L format:
/dev/sg0

/backstores/pscsi> create ultrium2 dev=2:0:0:0
SCSI device does not exist

/backstores/pscsi> create name=test dev=/dev/sr0
Note: block backstore recommended for SCSI block devices
Created pscsi storage object test using /dev/sr0

/backstores/pscsi> ls
o- pscsi ............................................................. [Storage
Objects: 1]
  o- test .......................................................... [/dev/sr0
deactivated]

####

There is no way to correctly specify the tape drive which should be used for
the target.
Note that the test-wise block device export above did work, only the tape can't
be used.

Do you have any further instructions how I can help to determine the cause of
the issue?

Best regards,
Herbert Nachtnebel



-- System Information:
Debian Release: 9.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages targetcli-fb depends on:
ii  python3                 3.5.3-1
ii  python3-configshell-fb  1.1.20-1
ii  python3-dbus            1.2.4-1+b1
ii  python3-rtslib-fb       2.1.57+debian-4
ii  python3-six             1.10.0-3

targetcli-fb recommends no packages.

targetcli-fb suggests no packages.

-- no debconf information