Am 2017-11-03 um 02:44 schrieb Jason Dillaman:
On Thu, Nov 2, 2017 at 11:34 AM, Matthias Leopold
<matthias.leopold@xxxxxxxxxxxxxxxx
<mailto:matthias.leopold@xxxxxxxxxxxxxxxx>> wrote:
Hi,
i'm trying to set up iSCSI gateways for a Ceph luminous cluster
using these instructions:
http://docs.ceph.com/docs/master/rbd/iscsi-target-cli/
<http://docs.ceph.com/docs/master/rbd/iscsi-target-cli/>
When arriving at step "Configuring: Adding a RADOS Block Device
(RBD)" things start to get messy: there is no "disks" entry in my
target path, so i can't "cd /iscsi-target/iqn.2003-01.com
<http://iqn.2003-01.com>.redhat.iscsi-gw:<target_name>/disks/". When
i try to create a disk in the top level "/disks" path ("/disks>
create pool=ovirt-default image=itest04 size=50g") gwcli crashes
with "ValueError: No JSON object could be decoded" (there is more
output when using debug but i don't think it matters). More
interesting is /var/log/tcmu-runner.log, it says consistently
[DEBUG] handle_netlink:207: cmd 1. Got header version 2. Supported 2.
[DEBUG] dev_added:768 rbd/ovirt-default.itest04: Got block_size 512,
size in bytes 53687091200
[DEBUG] tcmu_rbd_open:581 rbd/ovirt-default.itest04: tcmu_rbd_open
config rbd/ovirt-default/itest04/osd_op_timeout=30 block size 512
num lbas 104857600.
[DEBUG] timer_check_and_set_def:234 rbd/ovirt-default.itest04: The
cluster's default osd op timeout(30.000000), osd heartbeat grace(20)
interval(6)
[DEBUG] timer_check_and_set_def:242 rbd/ovirt-default.itest04: The
osd op timeout will remain the default value: 30.000000
[ERROR] tcmu_rbd_image_open:318 rbd/ovirt-default.itest04: Could not
open image itest04/osd_op_timeout=30. (Err -2)
The error is that ceph-iscsi-config has instructed tcmu-runner that the
name of the image is "itest04/osd_op_timeout=30". We changed the
delimiter for separating optionals from "/" to ";" and that is what your
version of tcmu-runner is expecting. Upgrade to the latest available
version of ceph-iscsi-config from here [1].
thank you very much, now this problem is gone and i happily run into the
"missing kernel attribute: qfull_time_out" issue ;-)
i read your comments in
https://bugzilla.redhat.com/show_bug.cgi?id=1503711 and the
http://lists.ceph.com/pipermail/ceph-users-ceph.com/2017-November/022042.html
thread, so i guess i'll have to wait for newer upstream and subsequently
RHEL/CentOS kernels. i can only say we would be very happy if these
patches could already be included in the 7.4.z kernels.
one minor issue i noticed is that gwcli doesn't like hyphens in pool
names. i don't know if this check is really necessary, we just happen to
have hyphens in our pool names, so we would have to change that
thanks a lot for your good work
matthias
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