HI All,
I try to configure multipath by export two iscsi gateway on two host
with same one rbd volume, The steps is below:
one host1:
1) mapped a rbd volume as a local blockdevice
rbd map fastpool/vdisk
as /dev/rbd0
2) export /dev/rbd0 as iscsi taget:
[root@zk23-03 ~]# targetcli / ls
o- / .........................................................................................................................
[...]
o- backstores
..............................................................................................................
[...]
| o- block ..................................................................................................
[Storage Objects: 1]
| | o- fastpool_vdisk
................................................................
[/dev/rbd0 (195.3GiB) write-thru activated]
| o- fileio .................................................................................................
[Storage Objects: 0]
| o- pscsi ..................................................................................................
[Storage Objects: 0]
| o- ramdisk ................................................................................................
[Storage Objects: 0]
o- iscsi ............................................................................................................
[Targets: 1]
| o- iqn.2016-05.com.zettakit.www:fastpool.vdisk
.......................................................................
[TPGs: 1]
| o- tpg1 ...............................................................................................
[no-gen-acls, no-auth]
| o- acls
..........................................................................................................
[ACLs: 1]
| | o- iqn.2016-05.com.zettakit:node2202.local1
............................................................. [Mapped
LUNs: 1]
| | o- mapped_lun0
........................................................................
[lun0 block/fastpool_vdisk (rw)]
| o- luns
..........................................................................................................
[LUNs: 1]
| | o- lun0
...............................................................................
[block/fastpool_vdisk (/dev/rbd0)]
| o- portals
....................................................................................................
[Portals: 0]
o- loopback .........................................................................................................
[Targets: 0]
o- srpt .............................................................................................................
[Targets: 0]
one host2, do the same:
one host1:
1) mapped a rbd volume as a local blockdevice
rbd map fastpool/vdisk
as /dev/rbd0
2) export /dev/rbd0 as iscsi taget:
[root@zk23-01 ~]# targetcli / ls
o- / .........................................................................................................................
[...]
o- backstores
..............................................................................................................
[...]
| o- block ..................................................................................................
[Storage Objects: 1]
| | o- fastpool_vdisk
................................................................
[/dev/rbd0 (195.3GiB) write-thru activated]
| o- fileio .................................................................................................
[Storage Objects: 0]
| o- pscsi ..................................................................................................
[Storage Objects: 0]
| o- ramdisk ................................................................................................
[Storage Objects: 0]
o- iscsi ............................................................................................................
[Targets: 1]
| o- iqn.2016-05.com.zettakit.www:fastpool.vdisk
.......................................................................
[TPGs: 1]
| o- tpg1 ...............................................................................................
[no-gen-acls, no-auth]
| o- acls
..........................................................................................................
[ACLs: 1]
| | o- iqn.2016-05.com.zettakit:node2202.local1
............................................................. [Mapped
LUNs: 1]
| | o- mapped_lun0
........................................................................
[lun0 block/fastpool_vdisk (rw)]
| o- luns
..........................................................................................................
[LUNs: 1]
| | o- lun0
...............................................................................
[block/fastpool_vdisk (/dev/rbd0)]
| o- portals
....................................................................................................
[Portals: 0]
o- loopback .........................................................................................................
[Targets: 0]
o- srpt .............................................................................................................
[Targets: 0]
After building connection to the two targets by iscsi-initiator, it
will have two iscsi dev: /dev/sdm and /dev/sdn,
but the multipath doesn't recognize it was same device.
By leaning multipath , I know it will use scsi_id to recognize as the
same device, how to use targetcli to export a rbd volume with the same
scsi_id ?
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