Awesome. Thanks Darryl. Do you want to propose a fix to stgt, or shall I?
On Aug 8, 2013 7:21 PM, "Darryl Bond" <dbond@xxxxxxxxxxxxx> wrote:
Dan,
I found that the tgt-admin perl script looks for a local file
if (-e $backing_store && ! -d $backing_store && $can_alloc == 1) {
A bit nasty, but I created some empty files relative to / of the same
path as the RBD backing store which worked around the problem.
mkdir /iscsi-spin
touch /iscsi-spin/test
Lets me restart tgtd and have the LUN created properly.
tgt-admin --dump is also not that useful, doesn't output the backing
store type.
# tgt-admin --dump
default-driver iscsi
<target iqn.2013.com.ceph:test>
backing-store iscsi-spin/test
initiator-address 192.168.6.100
</target>
Darryl
On 08/09/13 07:23, Dan Mick wrote:
On 08/04/2013 10:15 PM, Darryl Bond wrote:
I am testing scsi-target-utils tgtd with RBD support.I have not tried config files or tgt-admin to any great extent, but it
I have successfully created an iscsi target using RBD as an iscsi target
and tested it.
It backs onto a rados pool iscsi-spin with a RBD called test.
Now I want it to survive a reboot. I have created a conf file
<target iqn.2008-09.com.ceph:test>
<backing-store iscsi-spin/test>
bs-type rbd
path iscsi-spin/test
</backing-store>
</target>
When I restart tgtd It creates the target but doesn't connect the
backing store.
The tool tgt-admin has a test mode for the configuration file
[root@cephgw conf.d]# tgt-admin -p -e
# Adding target: iqn.2008-09.com.ceph:test
tgtadm -C 0 --lld iscsi --op new --mode target --tid 1 -T
iqn.2008-09.com.ceph:test
# Skipping device: iscsi-spin/test
# iscsi-spin/bashful-spin does not exist - please check the
configuration file
tgtadm -C 0 --lld iscsi --op bind --mode target --tid 1 -I ALL
It looks to me like tgtd support RBD backing stores but the
configuration utilities don't.
doesn't look to me like there are backend dependencies in those tools
(or I would have modified them at the time :)), but, that said, there
may be some weird problem. tgt-admin is a Perl script that could be
instrumented to figure out what's going on.
I do know that the syntax of the config file is dicey.
Anyone tried this?
What have I missed?
Regards
Darryl
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