ZFS and ISCSI question

Kaya Saman kayasaman at gmail.com
Sat Jul 29 18:59:51 UTC 2017


I'm trying to find out how ZFS and ISCSI work together. So far I have 
followed the guide in the handbook:


Based on the guide what I have done is created 3 demo files using dd:

disk1, disk2, disk3

then created a zpool around them: zpool create iscsi-tst /data/disk1 
/data/disk2 /data/disk3

and finally a ZVOL: zfs create -V iscsi-tst/tank

 From the guide a basic (for testing only) ctl.conf:

portal-group pg0 {
     discovery-auth-group no-authentication
     listen [::]

target iqn.2012-06.com.example:target0 {
     auth-group no-authentication
     portal-group pg0

     lun 0 {
         path iscsi-tst/tank
         size 500M

and then on the Initiator machine:

iscsictl -A -p <IP Address> -t iqn.2012-06.com.example:target0

I can confirm a connection:

# iscsictl -L
Target name                          Target portal    State
iqn.2012-06.com.example:target0      <IP Address> Connected: da24

But if we look at dmesg output it is saying the size cannot be queried?

da24 at iscsi4 bus 0 scbus9 target 0 lun 0
da24: <FREEBSD CTLDISK 0001> Fixed Direct Access SPC-4 SCSI device
da24: Serial Number MYSERIAL   0
da24: 150.000MB/s transfers
da24: Command Queueing enabled
da24: Attempt to query device size failed: NOT READY, Logical unit not 
ready, manual

I am wondering what I have done wrong and additionally is it possible to 
get the Initiator to see the zpool/ZVOL so that I can create a zfs 
dataset on it?



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