11:23 a.m.
Hello,
I have a CentOS 6.5 server offering iscsi luns via scsi-target-utils.
Lun 1 is configured as a storage domain in oVirt.
Now I add a second lun on server but it seems oVirt is not able to
discovery it..
Am I missing anyting simple?
On the server offering iSCSI target:
# tgtadm --lld iscsi --mode target --op show
Target 1: iqn.2014-07.local.localdomain:store1
System information:
Driver: iscsi
State: ready
I_T nexus information:
I_T nexus: 1
Initiator: iqn.1994-05.com.redhat:5d9b31319a8e
Connection: 0
IP Address: 10.10.1.61
LUN information:
LUN: 0
Type: controller
SCSI ID: IET 00010000
SCSI SN: beaf10
Size: 0 MB, Block size: 1
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: null
Backing store path: None
Backing store flags:
LUN: 1
Type: disk
SCSI ID: p_iscsi_store1_l
SCSI SN: 66666a41
Size: 214738 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: rdwr
Backing store path: /dev/drbd/by-res/iscsiha
Backing store flags:
LUN: 2
Type: disk
SCSI ID: p_iscsi_store1_l
SCSI SN: 12267514
Size: 536850 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: rdwr
Backing store path: /dev/drbd/by-res/iscsiesx
Backing store flags:
Account information:
iscsiuser
ACL information:
10.10.1.61
10.10.1.62
10.10.1.63
PS: both luns are drbd volumes and the server is master for both...
...
2: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:3124 nr:116228 dw:119352 dr:31816 al:23 bm:14 lo:0 pe:0 ua:0 ap:0
ep:1 wo:d oos:0
3: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:0 nr:0 dw:0 dr:680 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0
Lun 1 is already what previously discovered and connected, but I'm not able
to see the new lun, only the old one that is grayed out (because already
connected).
Tried both strategies to edit the existing SD and o add a new SD (is it
possible to add a new SD pointing to the same ip target and connecting new
luns?)
Thanks in advance,
Gianluca
11:26 a.m.
Once upon a time, Gianluca Cecchi <gianluca.cecchi(a)gmail.com> said:
Am I missing anyting simple?
Yep...
On the server offering iSCSI target:
# tgtadm --lld iscsi --mode target --op show
Target 1: iqn.2014-07.local.localdomain:store1
LUN: 1
SCSI ID: p_iscsi_store1_l
LUN: 2
SCSI ID: p_iscsi_store1_l
Both LUNs have the same ID name, which confuses discovery (I've done the
same thing before). This is a 16 character string, so make sure they
are distinct/unique in that 16 characters.
It is annoying that scsi-target-utils lets you do this.
--
Chris Adams <cma(a)cmadams.net>
11:30 a.m.
On Mon, Dec 1, 2014 at 5:26 PM, Chris Adams <cma(a)cmadams.net> wrote:
Once upon a time, Gianluca Cecchi <gianluca.cecchi(a)gmail.com>
said:
> Am I missing anyting simple?
Yep...
> On the server offering iSCSI target:
> # tgtadm --lld iscsi --mode target --op show
> Target 1: iqn.2014-07.local.localdomain:store1
> LUN: 1
> SCSI ID: p_iscsi_store1_l
> LUN: 2
> SCSI ID: p_iscsi_store1_l
Both LUNs have the same ID name, which confuses discovery (I've done the
same thing before). This is a 16 character string, so make sure they
are distinct/unique in that 16 characters.
It is annoying that scsi-target-utils lets you do this.
--
Chris Adams <cma(a)cmadams.net>
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http://lists.ovirt.org/mailman/listinfo/users
Arghhh!
Actually the name I used is
p_iscsi_store1_lun1
p_iscsi_store1_lun2
and the problem so should be that it is trimmed to 16 chars... I will try
Thanks!!
12:11 p.m.
On Mon, Dec 1, 2014 at 5:30 PM, Gianluca Cecchi <gianluca.cecchi(a)gmail.com>
wrote:
On Mon, Dec 1, 2014 at 5:26 PM, Chris Adams <cma(a)cmadams.net>
wrote:
> Once upon a time, Gianluca Cecchi <gianluca.cecchi(a)gmail.com> said:
> > Am I missing anyting simple?
>
> Yep...
>
> > On the server offering iSCSI target:
> > # tgtadm --lld iscsi --mode target --op show
> > Target 1: iqn.2014-07.local.localdomain:store1
> > LUN: 1
> > SCSI ID: p_iscsi_store1_l
> > LUN: 2
> > SCSI ID: p_iscsi_store1_l
>
> Both LUNs have the same ID name, which confuses discovery (I've done the
> same thing before). This is a 16 character string, so make sure they
> are distinct/unique in that 16 characters.
>
> It is annoying that scsi-target-utils lets you do this.
> --
> Chris Adams <cma(a)cmadams.net>
> _______________________________________________
> Users mailing list
> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
Arghhh!
Actually the name I used is
p_iscsi_store1_lun1
p_iscsi_store1_lun2
and the problem so should be that it is trimmed to 16 chars... I will try
Thanks!!
The original problem actually was to configure a new iSCSI lun for VMware
on the same store provided by scsi-target-utils and this new lun was not
visible...
So I tried originating with oVirt to crosscheck....
Now, after changing the ID, I have
# tgtadm --lld iscsi --mode target --op show | grep "SCSI ID"
SCSI ID: IET 00010000
SCSI ID: p_iscsi_store1_l
SCSI ID: p_lun2_istore1
and the result is that VMware is able to see the new lun ;-)
But the same didn't originate any change at oVirt side: the discovery, with
and without chap selected (see this thread that should be solved in my
version that is 3.5:
http://lists.ovirt.org/pipermail/users/2014-September/027388.html) doesn't
show the new LUN to attach, only LUN 1...
Any log or tes I can provide to debug problem of oVirt discovery?
Gianluca
4:06 a.m.
On 01/12/14 17:26, Chris Adams wrote:
It is annoying that scsi-target-utils lets you do this.
Maybe file a bug to solve this?
--
Mit freundlichen Grüßen / Regards
Sven Kieske
Systemadministrator
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4 comments
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participants (3)
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Chris Adams -
Gianluca Cecchi -
Sven Kieske