[Bug 1048008] Re: tgt needs restart to find LUN
tgt-admin -e for updating configuration ** Changed in: tgt (Ubuntu) Status: New = Fix Released -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to tgt in Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1048008] Re: tgt needs restart to find LUN
tgt-admin -e for updating configuration ** Changed in: tgt (Ubuntu) Status: New = Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1048008] Re: tgt needs restart to find LUN
Hi James, I agree it's likely to be an lvm/udev race; some observations: 1) It doesn't seem to happen with files 2) With lvm, It doesn't always happen if the guest is configured with a single core; most of the time but not always 3) With lvm it seems to happen (almost?) always when the guest has multiple cores. output of tgtadm as requested: - lvm based, bad --- Target 1: iqn.2008-09.com.example:server1.share1 System information: Driver: iscsi State: ready I_T nexus information: I_T nexus: 1 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd283 Connection: 0 IP Address: 192.168.123.12 I_T nexus: 2 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd282 Connection: 0 IP Address: 192.168.122.12 LUN information: LUN: 0 Type: controller SCSI ID: IET 0001 SCSI SN: beaf10 Size: 0 MB, Block size: 1 Online: Yes Removable media: No Readonly: No Backing store type: null Backing store path: None Backing store flags: Account information: ACL information: ALL --- LVM based, after restarting tgt --- Target 1: iqn.2008-09.com.example:server1.share1 System information: Driver: iscsi State: ready I_T nexus information: I_T nexus: 1 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd283 Connection: 0 IP Address: 192.168.123.12 I_T nexus: 2 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd282 Connection: 0 IP Address: 192.168.122.12 I_T nexus: 3 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd283 Connection: 0 IP Address: 192.168.123.12 I_T nexus: 4 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd282 Connection: 0 IP Address: 192.168.122.12 LUN information: LUN: 0 Type: controller SCSI ID: IET 0001 SCSI SN: beaf10 Size: 0 MB, Block size: 1 Online: Yes Removable media: No Readonly: No Backing store type: null Backing store path: None Backing store flags: LUN: 1 Type: disk SCSI ID: IET 00010001 SCSI SN: beaf11 Size: 10737 MB, Block size: 512 Online: Yes Removable media: No Readonly: No Backing store type: rdwr Backing store path: /dev/mapper/server1-share1 Backing store flags: Account information: ACL information: ALL (can also see the client accessing it there) --- file based, good --- Target 1: iqn.2008-09.com.example:server1.share1 System information: Driver: iscsi State: ready I_T nexus information: I_T nexus: 5 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd283 Connection: 0 IP Address: 192.168.123.12 I_T nexus: 6 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd282 Connection: 0 IP Address: 192.168.122.12 LUN information: LUN: 0 Type: controller SCSI ID: IET 0001 SCSI SN: beaf10 Size: 0 MB, Block size: 1 Online: Yes Removable media: No Readonly: No Backing store type: null Backing store path: None Backing store flags: LUN: 1 Type: disk SCSI ID: IET 00010001 SCSI SN: beaf11 Size: 1074 MB, Block size: 512 Online: Yes Removable media: No Readonly: No Backing store type: rdwr Backing store path: /home/dg/afile Backing store flags: Account information: ACL information: ALL ** Changed in: tgt (Ubuntu) Status: Incomplete = New -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to tgt in Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1048008] Re: tgt needs restart to find LUN
Hi James, I agree it's likely to be an lvm/udev race; some observations: 1) It doesn't seem to happen with files 2) With lvm, It doesn't always happen if the guest is configured with a single core; most of the time but not always 3) With lvm it seems to happen (almost?) always when the guest has multiple cores. output of tgtadm as requested: - lvm based, bad --- Target 1: iqn.2008-09.com.example:server1.share1 System information: Driver: iscsi State: ready I_T nexus information: I_T nexus: 1 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd283 Connection: 0 IP Address: 192.168.123.12 I_T nexus: 2 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd282 Connection: 0 IP Address: 192.168.122.12 LUN information: LUN: 0 Type: controller SCSI ID: IET 0001 SCSI SN: beaf10 Size: 0 MB, Block size: 1 Online: Yes Removable media: No Readonly: No Backing store type: null Backing store path: None Backing store flags: Account information: ACL information: ALL --- LVM based, after restarting tgt --- Target 1: iqn.2008-09.com.example:server1.share1 System information: Driver: iscsi State: ready I_T nexus information: I_T nexus: 1 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd283 Connection: 0 IP Address: 192.168.123.12 I_T nexus: 2 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd282 Connection: 0 IP Address: 192.168.122.12 I_T nexus: 3 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd283 Connection: 0 IP Address: 192.168.123.12 I_T nexus: 4 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd282 Connection: 0 IP Address: 192.168.122.12 LUN information: LUN: 0 Type: controller SCSI ID: IET 0001 SCSI SN: beaf10 Size: 0 MB, Block size: 1 Online: Yes Removable media: No Readonly: No Backing store type: null Backing store path: None Backing store flags: LUN: 1 Type: disk SCSI ID: IET 00010001 SCSI SN: beaf11 Size: 10737 MB, Block size: 512 Online: Yes Removable media: No Readonly: No Backing store type: rdwr Backing store path: /dev/mapper/server1-share1 Backing store flags: Account information: ACL information: ALL (can also see the client accessing it there) --- file based, good --- Target 1: iqn.2008-09.com.example:server1.share1 System information: Driver: iscsi State: ready I_T nexus information: I_T nexus: 5 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd283 Connection: 0 IP Address: 192.168.123.12 I_T nexus: 6 Initiator: iqn.2005-03.org.open-iscsi:2b2883cd282 Connection: 0 IP Address: 192.168.122.12 LUN information: LUN: 0 Type: controller SCSI ID: IET 0001 SCSI SN: beaf10 Size: 0 MB, Block size: 1 Online: Yes Removable media: No Readonly: No Backing store type: null Backing store path: None Backing store flags: LUN: 1 Type: disk SCSI ID: IET 00010001 SCSI SN: beaf11 Size: 1074 MB, Block size: 512 Online: Yes Removable media: No Readonly: No Backing store type: rdwr Backing store path: /home/dg/afile Backing store flags: Account information: ACL information: ALL ** Changed in: tgt (Ubuntu) Status: Incomplete = New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1048008] Re: tgt needs restart to find LUN
Dave I've not been able to reproduce your issue using a quantal KVM instance. Please could you run: sudo tgtadm --lld iscsi --mode target --op show when you see the issue - hopefully this will tell us a bit more. Thanks -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to tgt in Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1048008] Re: tgt needs restart to find LUN
Dave I've not been able to reproduce your issue using a quantal KVM instance. Please could you run: sudo tgtadm --lld iscsi --mode target --op show when you see the issue - hopefully this will tell us a bit more. Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1048008] Re: tgt needs restart to find LUN
Hi Dave Do you see any output during first boot which would indicate why tgt does not present the LUN? I think this may be some sort of race condition between tgt startup and the device mapper having detected all devices. It would be good if you could also try using a file as a backing-store to see if you get the same problem. ** Changed in: tgt (Ubuntu) Importance: Undecided = Medium ** Changed in: tgt (Ubuntu) Status: New = Incomplete -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to tgt in Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1048008] Re: tgt needs restart to find LUN
Hi Dave Do you see any output during first boot which would indicate why tgt does not present the LUN? I think this may be some sort of race condition between tgt startup and the device mapper having detected all devices. It would be good if you could also try using a file as a backing-store to see if you get the same problem. ** Changed in: tgt (Ubuntu) Importance: Undecided = Medium ** Changed in: tgt (Ubuntu) Status: New = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1048008] Re: tgt needs restart to find LUN
-- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to tgt in Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1048008] Re: tgt needs restart to find LUN
This is the tgt conf that specifies the target: root@server1:/var/log# cat /etc/tgt/conf.d/dag.conf # Sample target with one LUN only. Defaults to allow access for all initiators: # #iSNSServerIP 192.168.122.10 #iSNSServerPort 3205 #iSNSAccessControl On #iSNS On target iqn.2008-09.com.example:server1.share1 backing-store /dev/mapper/server1-share1 /target -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to tgt in Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1048008] Re: tgt needs restart to find LUN
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1048008] Re: tgt needs restart to find LUN
This is the tgt conf that specifies the target: root@server1:/var/log# cat /etc/tgt/conf.d/dag.conf # Sample target with one LUN only. Defaults to allow access for all initiators: # #iSNSServerIP 192.168.122.10 #iSNSServerPort 3205 #iSNSAccessControl On #iSNS On target iqn.2008-09.com.example:server1.share1 backing-store /dev/mapper/server1-share1 /target -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1048008 Title: tgt needs restart to find LUN To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tgt/+bug/1048008/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
