[stgt] Problem: automatic vtl setup using targets.conf vs script, failing on automatic

[Mark Harvey]

Albert Pauw wrote:
> Mark Harvey wrote:
>>
>> I've had a really, really quick look & didn't spot anything.
>> Since then, I've been layed up in bed for a couple of days.
>> Now I'm elbow-deep in paint (house renos)..
>>
>> Tomorrow will be the soonest I'll have a chance..
>>
>> Cheers
>> Mark
> Sorry Mark,
>
> didn't really wanted to bother you, sorry to hear you were ill.
>
> Have you been actually able to reproduce the problem?
> Quite simply:
>
> - use the targets.conf I sent earlier
> - start up tgt manually, tgt -d8 -f
> - tgt-admin -e -v to set up the vtl using targets.conf
> - login with iscsi
> - now try to get the status of the changer (mtx -f /dev/changer status)
>
> What happened with me is that tgtd dies. I don't know if my previous 
> email,
> regarding the malformed scsi packet, has anything to do with it. I 
> assume not
> as when I set it all up using standard scripts it does work (with 
> malformed packets).
> Mind you, according to wireshark the only malformed packets are when 
> the status
> of the changer elements are send back to the initiator.
>
OK, looks like I'm failing step 1. :(

I created /root/btapes/notape[123] and a 'touch /root/smc' file(s).

I've not used the perl tgt-adm before..

# tgt-admin -e -v
[snip]
# Write cache is enabled (default) for lun 2.
tgtadm --lld iscsi --op new --mode logicalunit --tid 1 --lun 3 -b 
/root/btapes/notape3 --device-type tape
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=3 
--params scsi_sn="HUM1A00003"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=3 
--params scsi_id="HP LTO3 ULTRIUM"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=3 
--params product_id="LTO3 ULTRIUM"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=3 
--params removable="1"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=3 
--params vendor_id="HP"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=3 
--params product_rev="0001"
# Write cache is enabled (default) for lun 3.
Multiple 'params' definitions in 'backing-store' not allowed!
Check your config file for errors (target: 
iqn.2008-09.com.example:server.tape).


root at l-034246:~# cat /etc/tgt/targets.conf
# Empty targets configuration file -- please see the package
# documentation directory for an example.

# Empty targets configuration file -- please see the package
# documentation directory for an example.

include /etc/tgt/temp/*.conf

default-driver iscsi

<target iqn.2008-09.com.example:server.tape>
    allow-in-use yes
    <backing-store /root/btapes/notape1>
        lun 1
        device-type tape
        removable 1
        vendor_id "HP"
        product_id "LTO3 ULTRIUM"
        product_rev "0001"
        scsi_sn "HUM1A00001"
        scsi_id "HP LTO3 ULTRIUM"
    </backing-store>
    <backing-store /root/btapes/notape2>
        lun 2
        device-type tape
        removable 1
        vendor_id "HP"
        product_id "LTO3 ULTRIUM"
        product_rev "0001"
        scsi_sn "HUM1A00002"
        scsi_id "HP LTO3 ULTRIUM"
    </backing-store>
    <backing-store /root/btapes/notape3>
        lun 3
        device-type tape
        removable 1
        vendor_id "HP"
        product_id "LTO3 ULTRIUM"
        product_rev "0001"
        scsi_sn "HUM1A00003"
        scsi_id "HP LTO3 ULTRIUM"
    </backing-store>
    <backing-store /root/smc>
        lun 4
        device-type changer
        removable 1
        vendor_id "STK"
        product_id "L700"
        product_rev "0001"
        scsi_sn "123:456:789:000"
        # Dummy 'page 0'
        mode_page "0:0:0"
        # Page 0x02: Disconnect/Reconnect SPC-3
        mode_page "0x02:0:14:0x80:0x80:0:0xa:0:0:0:0:0:0:0:0:0:0"
        # Page 0x1a: Power Condition SPC-3
        mode_page "0x1a:0:18:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0"
        # Page 0x1c: Informational Exceptions Control SPC-3
        mode_page "0x1c:0:10:8:0:0:0:0:0:0:0:0:0"
        # Page 0x1d: Element Address Assignment SMC-3 7.3.4
        mode_page "0x1d:0:0x12:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0"
        # Page 0x1e: Transport Geometry Parameters SMC-3 7.3.5
        mode_page "0x1e:0:2:0:0"
        # Page 0x1f: Device Capabilities SMC-3 7.3.2
        # Page 0x1f/Subpage 0x41: Extended Device Capabilities SMC-3 7.3.3
        mode_page 
"0x1f:0:0x12:0x0f:7:0x0f:0x0f:0x0f:0x0f:0:0:0:0:0x0f:0x0f:0x0f:0x0f:0:0:0:0"
        # Type 1: Medium Transport Elements (robot arm/picker)
        params 
element_type=1,start_address=1,quantity=1,media_home=/root/btapes
        # Type 2: Storage Elements (tape slots)
        params 
element_type=2,start_address=1000,quantity=24,media_home=/root/btapes
        # Type 3: Import/Export Elements (CAP)
        params 
element_type=3,start_address=10,quantity=5,media_home=/root/btapes
        # Type 4: Add Data Transfer devices (drives)
        params 
element_type=4,start_address=500,quantity=3,media_home=/root/btapes
        params element_type=4,address=500,tid=1,lun=1
        params element_type=4,address=500,tid=1,lun=2
        params element_type=4,address=500,tid=1,lun=3
    </backing-store>
</target>

> Cheers,
>
> Albert
>


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