Hi Mike,

Yes indeed, that worked! 

For the record, my ietd.conf

Target iqn.2007-04.nl.pcextreme:ha
        Lun 0 Path=/dev/data/lun0,Type=fileio,ScsiId=nWFKhBCMq56JfSzq
        Lun 1 Path=/dev/data/lun1,Type=fileio,ScsiId=wrOhZ1hVFANuQOJM
        Lun 2 Path=/dev/data/lun2,Type=fileio,ScsiId=pW8e21PNf7WR2FDh

-  
Met vriendelijke groet,

Wido den Hollander
Hoofd Systeembeheer / CSO
Telefoon Support Nederland: 0900 9633 (45 cpm)
Telefoon Support Belgiƫ: 0900 70312 (45 cpm)
Telefoon Direct: (+31) (0)20 50 60 104
Fax: +31 (0)20 50 60 111
E-mail: supp...@pcextreme.nl
Website: http://www.pcextreme.nl
Kennisbank: http://support.pcextreme.nl/
Netwerkstatus: http://nmc.pcextreme.nl


On Fri, 2009-05-29 at 11:13 -0500, Mike Christie wrote:
> Wido wrote:
> > Hello,
> > 
> > Last night i had the idea of building a multipath iSCSI setup with
> > DRBD in Primary/Primary.
> > 
> > My idea was/is:
> > 
> > I have two machines with a 30GB partition wich is synced via DRBD (i
> > assume everybody here is familiar with DRBD).
> > 
> > My DRBD is running fine both machines are UpToDate and they are both
> > primary.
> > 
> > On top of /dev/drbd0 i made a LVM VG with the name "data", in this VG
> > i created 3 LV's with a size of 5GB.
> > 
> > For this e-mail i'll call the machines target1, target2 and iscsi-
> > initiator
> > 
> > target1: 192.168.5.199
> > target2: 192.168.5.200
> > iscsi-initiator: 192.168.5.198
> > 
> > On both the targets i have created the folling ietd.conf:
> > 
> > Target iqn.2007-04.nl.pcextreme:ha
> >         Lun 0 Path=/dev/data/lun0,Type=fileio
> >         Lun 1 Path=/dev/data/lun1,Type=fileio
> >         Lun 2 Path=/dev/data/lun2,Type=fileio
> > 
> > So both targets have the same IQN and i tried to create a multipath
> > from the client to both tartgets:
> > 
> > iscsiadm -m discovery -t sendtargets -p 192.168.5.199
> > iscsiadm -m discovery -t sendtargets -p 192.168.5.200
> > iscsiadm -m node -T iqn.2007-04.nl.pcextreme:ha -p 192.168.5.199 --
> > login
> > iscsiadm -m node -T iqn.2007-04.nl.pcextreme:ha -p 192.168.5.200 --
> > login
> > 
> > This works and i get a total of 6 new SCSI devices, but multipath
> > won't recognize them as a redundant path:
> > 
> > r...@iscsi-client:~# multipath -ll
> > 149455400000000000000000001000000595800000f000000dm-3 IET     ,VIRTUAL-
> > DISK
> > [size=5.0G][features=0][hwhandler=0]
> > \_ round-robin 0 [prio=1][active]
> >  \_ 5:0:0:0 sde 8:64  [active][ready]
> > 149455400000000000000000001000000dd3c00000e000000dm-0 IET     ,VIRTUAL-
> > DISK
> > [size=5.0G][features=0][hwhandler=0]
> > \_ round-robin 0 [prio=1][active]
> >  \_ 4:0:0:1 sdc 8:32  [active][ready]
> > 149455400000000000000000001000000925800000f000000dm-5 IET     ,VIRTUAL-
> > DISK
> > [size=5.0G][features=0][hwhandler=0]
> > \_ round-robin 0 [prio=1][active]
> >  \_ 5:0:0:2 sdg 8:96  [active][ready]
> > 149455400000000000000000001000000655800000f000000dm-4 IET     ,VIRTUAL-
> > DISK
> > [size=5.0G][features=0][hwhandler=0]
> > \_ round-robin 0 [prio=1][active]
> >  \_ 5:0:0:1 sdf 8:80  [active][ready]
> > 149455400000000000000000001000000a03c00000e000000dm-1 IET     ,VIRTUAL-
> > DISK
> > [size=5.0G][features=0][hwhandler=0]
> > \_ round-robin 0 [prio=1][active]
> >  \_ 4:0:0:0 sdb 8:16  [active][ready]
> > 149455400000000000000000001000000193d00000e000000dm-2 IET     ,VIRTUAL-
> > DISK
> > [size=5.0G][features=0][hwhandler=0]
> > \_ round-robin 0 [prio=1][active]
> >  \_ 4:0:0:2 sdd 8:48  [active][ready]
> > r...@iscsi-client:~#
> > 
> > Is this a target issue because the "sessions" are not synchronized
> > between both targets? Or is this related to Open-iSCSI and multipath?
> > 
> 
> multipath does not use any iscsi info like targetname or portal to build 
> the multipath device. It just uses something like scsi vpd page info.
> 
> I think in your ietd.conf you will want to use the ScsiId or ScsiSN 
> setting in the Path line.
> 
> 
>  > Target iqn.2007-04.nl.pcextreme:ha
>  >         Lun 0 Path=/dev/data/lun0,Type=fileio,scsi_id=some-uuid1
>  >         Lun 1 Path=/dev/data/lun1,Type=fileio,scsi_id=some-uuid2
>  >         Lun 2 Path=/dev/data/lun2,Type=fileio,scsi_id=some-uuid3
> 
> Then in the other target box have the scsi_id uuids match up.
> 
> 
> --~--~---------~--~----~------------~-------~--~----~
> You received this message because you are subscribed to the Google Groups 
> "open-iscsi" group.
> To post to this group, send email to open-iscsi@googlegroups.com
> To unsubscribe from this group, send email to 
> open-iscsi+unsubscr...@googlegroups.com
> For more options, visit this group at 
> http://groups.google.com/group/open-iscsi
> -~----------~----~----~----~------~----~------~--~---
> 

Attachment: signature.asc
Description: This is a digitally signed message part

Reply via email to