Can't discover luns on iscisi target when host is running fedora 28
Hi, Recently I hit an issue when I can't add iscsi storage domain because engine can't see any LUNs there. I wonder if I missed some step in the configuration or something. There is a fedora 29 machine running iscsi target which has a single lun and host (banana) registered in its ACL: [cucumber@cucumber ~]$ sudo targetcli [sudo] password for cucumber: targetcli shell version 2.1.fb48 Copyright 2011-2013 by Datera, Inc and others. For help on commands, type 'help'. /iscsi/iqn.20...e:target/tpg1> ls o- tpg1 ..................................................................................................... [no-gen-acls, no-auth] o- acls ................................................................................................................ [ACLs: 1] | o- iqn.1994-05.com.redhat:4bf5ff1a15b6 ........................................................................ [Mapped LUNs: 1] | o- mapped_lun0 ................................................................................. [lun0 fileio/filestore0 (rw)] o- luns ................................................................................................................ [LUNs: 1] | o- lun0 ................................................................... [fileio/filestore0 (/etc/fileio) (default_tg_pt_gp)] o- portals .......................................................................................................... [Portals: 1] o- 0.0.0.0:3260 ........................................................................................................... [OK] From fedora 28 host I can login and logout, but there is this segfault and when I try getting LUN info it fails: [banana@banana ~]$ sudo iscsiadm --mode discovery --type sendtargets --portal cucumber 192.168.111.4:3260,1 iqn.2016-01.com.example:target [banana@banana ~]$ sudo iscsiadm -m node -T iqn.2016-01.com.example:target -l Logging in to [iface: default, target: iqn.2016-01.com.example:target, portal: 192.168.111.4,3260] (multiple) Login to [iface: default, target: iqn.2016-01.com.example:target, portal: 192.168.111.4,3260] successful. [banana@banana ~]$ sudo iscsiadm -m session -P 3 -r 2 iscsiadm: could not read session targetname: 5 iscsiadm: Could not get session info for sid 2 [banana@banana ~]$ sudo iscsiadm -m session -P 3 iSCSI Transport Class version 2.0-870 version 6.2.0.874 Segmentation fault It seems I am hitting this: https://bugzilla.redhat.com/show_bug.cgi?id=1462767 Could this be the reason that there are no LUNs in engine web UI after I discover iscsi target? Is anyone aware of workaround or whether I am doing something wrong? Thanks, Fedor Gavrilov
On Wed, Feb 27, 2019 at 12:03 PM Fedor Gavrilov <fgavrilo@redhat.com> wrote:
Hi,
Recently I hit an issue when I can't add iscsi storage domain because engine can't see any LUNs there. I wonder if I missed some step in the configuration or something.
There is a fedora 29 machine running iscsi target which has a single lun and host (banana) registered in its ACL: [cucumber@cucumber ~]$ sudo targetcli [sudo] password for cucumber: targetcli shell version 2.1.fb48 Copyright 2011-2013 by Datera, Inc and others. For help on commands, type 'help'.
/iscsi/iqn.20...e:target/tpg1> ls o- tpg1 ..................................................................................................... [no-gen-acls, no-auth] o- acls ................................................................................................................ [ACLs: 1] | o- iqn.1994-05.com.redhat:4bf5ff1a15b6 ........................................................................ [Mapped LUNs: 1] | o- mapped_lun0 ................................................................................. [lun0 fileio/filestore0 (rw)] o- luns ................................................................................................................ [LUNs: 1] | o- lun0 ................................................................... [fileio/filestore0 (/etc/fileio) (default_tg_pt_gp)] o- portals .......................................................................................................... [Portals: 1] o- 0.0.0.0:3260 ........................................................................................................... [OK]
From fedora 28 host I can login and logout, but there is this segfault and when I try getting LUN info it fails:
...
[banana@banana ~]$ sudo iscsiadm -m session -P 3 -r 2 iscsiadm: could not read session targetname: 5 iscsiadm: Could not get session info for sid 2 [banana@banana ~]$ sudo iscsiadm -m session -P 3 iSCSI Transport Class version 2.0-870 version 6.2.0.874 Segmentation fault
It seems I am hitting this: https://bugzilla.redhat.com/show_bug.cgi?id=1462767
Could this be the reason that there are no LUNs in engine web UI after I discover iscsi target? Is anyone aware of workaround or whether I am doing something wrong?
If the host is running Fedora 28, you may hit this: https://bugzilla.redhat.com/1670966 You can find the solution here: https://lists.ovirt.org/archives/list/devel@ovirt.org/thread/OWNXADWKYN3Z57O... You may also find this interesting: https://tools.ietf.org/html/rfc1178 Nir
Thanks, Nir! That worked like a charm. I think it will be a good note to have in host setup docs meanwhile. As for naming, it seems I was naming my machines more or less according to this RFC without realizing it :D Thanks, Fedor ----- Original Message ----- From: "Nir Soffer" <nsoffer@redhat.com> To: "Fedor Gavrilov" <fgavrilo@redhat.com> Cc: "devel" <devel@ovirt.org> Sent: Wednesday, February 27, 2019 7:53:19 PM Subject: Re: [ovirt-devel] Can't discover luns on iscisi target when host is running fedora 28 On Wed, Feb 27, 2019 at 12:03 PM Fedor Gavrilov <fgavrilo@redhat.com> wrote:
Hi,
Recently I hit an issue when I can't add iscsi storage domain because engine can't see any LUNs there. I wonder if I missed some step in the configuration or something.
There is a fedora 29 machine running iscsi target which has a single lun and host (banana) registered in its ACL: [cucumber@cucumber ~]$ sudo targetcli [sudo] password for cucumber: targetcli shell version 2.1.fb48 Copyright 2011-2013 by Datera, Inc and others. For help on commands, type 'help'.
/iscsi/iqn.20...e:target/tpg1> ls o- tpg1 ..................................................................................................... [no-gen-acls, no-auth] o- acls ................................................................................................................ [ACLs: 1] | o- iqn.1994-05.com.redhat:4bf5ff1a15b6 ........................................................................ [Mapped LUNs: 1] | o- mapped_lun0 ................................................................................. [lun0 fileio/filestore0 (rw)] o- luns ................................................................................................................ [LUNs: 1] | o- lun0 ................................................................... [fileio/filestore0 (/etc/fileio) (default_tg_pt_gp)] o- portals .......................................................................................................... [Portals: 1] o- 0.0.0.0:3260 ........................................................................................................... [OK]
From fedora 28 host I can login and logout, but there is this segfault and when I try getting LUN info it fails:
...
[banana@banana ~]$ sudo iscsiadm -m session -P 3 -r 2 iscsiadm: could not read session targetname: 5 iscsiadm: Could not get session info for sid 2 [banana@banana ~]$ sudo iscsiadm -m session -P 3 iSCSI Transport Class version 2.0-870 version 6.2.0.874 Segmentation fault
It seems I am hitting this: https://bugzilla.redhat.com/show_bug.cgi?id=1462767
Could this be the reason that there are no LUNs in engine web UI after I discover iscsi target? Is anyone aware of workaround or whether I am doing something wrong?
If the host is running Fedora 28, you may hit this: https://bugzilla.redhat.com/1670966 You can find the solution here: https://lists.ovirt.org/archives/list/devel@ovirt.org/thread/OWNXADWKYN3Z57O... You may also find this interesting: https://tools.ietf.org/html/rfc1178 Nir
participants (2)
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Fedor Gavrilov -
Nir Soffer