Re: [Scst-devel] Problem with configuration of SCST target (FC)

[Mark B. <mar...@gm...>]

On Tue, Oct 12, 2010 at 6:43 AM, Umesh Gaikwad <uga...@gm...> wrote:

> Steps to Configure SCST and disk done using below commands
> ==========================================================
> 1) Create disk
> dd if=/dev/zero of=/mnt/disk1 count=512
>
> ls -l /mnt/disk1
> -rwxr-xr-x 1 root root 536870912 Oct 11 09:23 /mnt/disk1
>
> file /mnt/disk1
> /mnt/disk1: data
>
> 2) Enable target mode fibre card specifying wwn
> scstadmin -enable 21:00:00:24:ff:29:85:6e
>
> 3) Add device
>
> scstadmin -adddev DISK01 -handler vdisk_fileio -path /mnt/disk1
>
> 4) Assign device to target
> scstadmin -assigndev DISK01 -group 21:00:00:24:ff:29:85:6e -lun 0
>
> 5) Add host to the target group
>
> echo "add 21:00:00:c0:dd:14:dd:41" >/proc/scsi_tgt/groups/HOST01/names
>
> My /etc/scst.conf file looks as below:
> =======================================
>
> # Automatically generated by SCST Configurator v1.0.11.
>
> # NOTE: Options are pipe (|) seperated.
>
> [OPTIONS]
> #OPTION <1|0|YES|NO|TRUE|FALSE|VALUE>
> # Copy configuration options during a -writeconfig
> KEEP_CONFIG TRUE
> # For FC targets, issue a LIP after every assignment change
> ISSUE_LIP FALSE
>
> [HANDLER vdisk]
> #DEVICE <vdisk name>,<device path>,<options>,<block size>,<t10 device id>
> DEVICE DISK01,/mnt/disk1,,512,DISK01 af3c9f3d
>
> [HANDLER vcdrom]
> #DEVICE <vdisk name>,<device path>
>
> [GROUP Default]
> #USER <user wwn>
>
> [GROUP HOST01]
> #USER <user wwn>
> USER 21:00:00:c0:dd:14:dd:41
>
> [ASSIGNMENT Default]
> #DEVICE <device name>,<lun>,<options>
>
> [ASSIGNMENT HOST01]
> #DEVICE <device name>,<lun>,<options>
> DEVICE DISK01,0
>
> [TARGETS enable]
> #HOST <wwn identifier>
> HOST 21:00:00:24:ff:**:85:6e
>
> [TARGETS disable]
> #HOST <wwn identifier>
>
>
> The main Problem I am facing
> ======================
>
> Done the configuration of SCST as per the above commands and when I try to
> load the config,
> I am seeing the below problem
>
> scstadmin -forceconfig -config /etc/scst.conf
> Collecting current configuration: done.
>
>
> Collecting current configuration: done.
>
>         -> WARNING: Target '21:00:00:24:ff:**:85:6e' not found on system.
>
>
> Encountered 1 error(s) while processing.
>
> Configuration checked, 0 difference(s) found with working configuration.
> Configuration errors found, aborting.
>
> Due to the above error I am not able to see the disk on server.
>
> Can anyone please let me know whyc the target is not available.
>
> --
> Thanks & Regards,
> Umesh Gaikwad
>
>
You're using the old procfs version of scst and scstadmin. The sysfs version
is the new standard and procfs versions of scstadmin will soon no longer be
supported.

However, if I had to guess, your target WWN doesn't look valid. Also make
sure the correct target module is loaded.

- Mark.