AFAICT, the problem was the status of the DRBD resource "r0" _at_the_time_that_tgtd_was_started_. i.e., fixing the status of the DRBD resource without restarting tgtd doesn't seem to change the behavior of tgtd. I noticed that after restarting aoe-1.example.com (192.168.56.101) that the resource "r0" was in secondary mode... > [root@aoe-1 ~]# drbd-overview > 0:r0/0 Connected Secondary/Secondary UpToDate/UpToDate ...so I promoted aoe-1.example.com to primary: > [root@aoe-1 ~]# drbdadm primary r0 > > [root@aoe-1 ~]# drbd-overview > 0:r0/0 Connected Primary/Secondary UpToDate/UpToDate ...and then I restarted tgtd: > [root@aoe-1 ~]# /etc/init.d/tgtd stop > Stopping SCSI target daemon: [ OK ] > > [root@aoe-1 ~]# /etc/init.d/tgtd start > Starting SCSI target daemon: [ OK ] ...then, on the initiator, I disconnected from the session and cleared the open-iscsi database: > [root@clvm-1 ~]# iscsiadm -m node -u all > Logging out of session [sid: 13, target: iqn.2014-09.com.example.san-1:drbd0, portal: 192.168.56.101,3260] > Logout of [sid: 13, target: iqn.2014-09.com.example.san-1:drbd0, portal: 192.168.56.101,3260] successful. > > [root@clvm-1 ~]# iscsiadm -m node -o delete all Meanwhile, on the target, everything continued to appear normal: > [root@aoe-1 ~]# tgtadm --lld iscsi --mode target --op show > Target 1: iqn.2014-09.com.example.san-1:drbd0 > System information: > Driver: iscsi > State: ready > I_T nexus information: > 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: IET 00010001 > SCSI SN: beaf11 > Size: 535 MB, Block size: 512 > Online: Yes > Removable media: No > Prevent removal: No > Readonly: No > Backing store type: rdwr > Backing store path: /dev/drbd0 > Backing store flags: > Account information: > ACL information: > ALL After re-discovering the targets and logging-in again: > [root@clvm-1 ~]# iscsiadm -m discovery -t sendtargets -p aoe-1.example.com > 192.168.56.101:3260,1 iqn.2014-09.com.example.san-1:drbd0 > > [root@clvm-1 ~]# iscsiadm -m node -T iqn.2014-09.com.example.san-1:drbd0 -l > Logging in to [iface: default, target: iqn.2014-09.com.example.san-1:drbd0, portal: 192.168.56.101,3260] (multiple) > Login to [iface: default, target: iqn.2014-09.com.example.san-1:drbd0, portal: 192.168.56.101,3260] successful. > > [root@clvm-1 ~]# iscsiadm -m session -P3 > iSCSI Transport Class version 2.0-870 > version 6.2.0-873.10.el6 > Target: iqn.2014-09.com.example.san-1:drbd0 > Current Portal: 192.168.56.101:3260,1 > Persistent Portal: 192.168.56.101:3260,1 > ********** > Interface: > ********** > Iface Name: default > Iface Transport: tcp > Iface Initiatorname: iqn.1994-05.com.redhat:645e14dfb4 > Iface IPaddress: 192.168.56.103 > Iface HWaddress: <empty> > Iface Netdev: <empty> > SID: 14 > iSCSI Connection State: LOGGED IN > iSCSI Session State: LOGGED_IN > Internal iscsid Session State: NO CHANGE > ********* > Timeouts: > ********* > Recovery Timeout: 120 > Target Reset Timeout: 30 > LUN Reset Timeout: 30 > Abort Timeout: 15 > ***** > CHAP: > ***** > username: <empty> > password: ******** > username_in: <empty> > password_in: ******** > ************************ > Negotiated iSCSI params: > ************************ > HeaderDigest: None > DataDigest: None > MaxRecvDataSegmentLength: 262144 > MaxXmitDataSegmentLength: 8192 > FirstBurstLength: 65536 > MaxBurstLength: 262144 > ImmediateData: Yes > InitialR2T: Yes > MaxOutstandingR2T: 1 > ************************ > Attached SCSI devices: > ************************ > Host Number: 16 State: running > scsi16 Channel 00 Id 0 Lun: 0 > scsi16 Channel 00 Id 0 Lun: 1 > Attached scsi disk sdb State: running ...the LUN is available on the initiator. =D -- Eric Pretorious +1.530.386.3649 > On Sat, Oct 18, 2014 at 11:16 AM, eric pretorious <epretorious@xxxxxxxxx> wrote: >>> [root@aoe-1 ~]# tgt-admin -s >>> Target 1: iqn.2014-09.com.example.san-1:drbd0 >>> System information: >>> Driver: iscsi >>> State: ready >>> I_T nexus information: >>> 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: IET 00010001 >>> SCSI SN: beaf11 >>> Size: 535 MB, Block size: 512 >>> Online: Yes >>> Removable media: No >>> Prevent removal: No >>> Readonly: No >>> Backing store type: rdwr >>> Backing store path: /dev/drbd0 >>> Backing store flags: >>> Account information: >>> ACL information: >>> ALL -- Eric Pretorious +1.530.386.3649 -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
