On Fri, 11 Dec 2009 17:57:48 +0100 Albert Pauw <albert.pauw@xxxxxxxxx> wrote: > FUJITA Tomonori wrote: > > > >> Yes, you could put the info of my mail in a file like that. > >> > > > > A patch, please :) > > > > > Here is the patch for a README.ssc, hope that is fine with you. Thanks a lot! I added a short introduction (and changed the format a bit). Adding more information (simple configuration examples, etc) are welcomed! = From: Albert Pauw <albert.pauw@xxxxxxxxx> Subject: [PATCH] add doc/README.ssc We need to add more information (simple configuration examples, etc) however this is a start. Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx> --- doc/README.ssc | 152 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 152 insertions(+), 0 deletions(-) create mode 100644 doc/README.ssc diff --git a/doc/README.ssc b/doc/README.ssc new file mode 100644 index 0000000..b01edae --- /dev/null +++ b/doc/README.ssc @@ -0,0 +1,152 @@ +Introduction +------------- +The SSC emulation in TGTD can emulate tape drives by using files. This +virtualization technology is known as a virtual tape library (VTL). + + +Solaris tips +------------- +If one wants to get VTL working on a Solaris initiator (and this +target of course under Linux) then it is rather simple to get a tape +drive working. Getting the changer device working under Solaris +(OpenSolaris) take a bit more effort. This file describes the way to +do it. + +Although most of it is probably well know to Solaris fans, it took me +a bit of time to figure out to get the VTL target working fine under +OpenSolaris. For those who want to give it a try, here are the +commands: + +For normal disk and cd targets no files have to be changed. All you +need is the following: + +# svcadm enable iscsi_initiator + +and check if it is online: + +# svcs iscsi_initiator + +the state should be online. + +Now we add the discovery address to the initiator: + +# iscsiadm add discovery-address <IP of target> + +Now we configure the discovery mode to sendtargets: + +# iscsiadm modify discovery -t enable + +Check the target: + +# iscsiadm list target -S + +And create the device files: + +# devfsadm -i iscsi + + +Tape devices will be shown properly, but not the changer device, this +takes a bit more work. Two files need to be changed, and a reboot is +needed to set things up properly. + +In the file /etc/driver_aliases the two lines + +sgen "scsa,08.bfcp" +sgen "scsa,08.bvhci" + +need to be replaced with + +sgen "scsiclass,08" + + +The file /kernel/drv/sgen.conf, which is basically all commented out +needs to have the following lines: + +device-type-config-list="changer","sequential"; +inquiry-config-list= "*", "*"; + +name="sgen" class="scsi" target=0 lun=4; +name="sgen" class="scsi" target=1 lun=4; +name="sgen" class="scsi" target=2 lun=4; +name="sgen" class="scsi" target=3 lun=4; +name="sgen" class="scsi" target=4 lun=4; +name="sgen" class="scsi" target=5 lun=4; +name="sgen" class="scsi" target=6 lun=4; +name="sgen" class="scsi" target=7 lun=4; +name="sgen" class="scsi" target=8 lun=4; +name="sgen" class="scsi" target=9 lun=4; +name="sgen" class="scsi" target=10 lun=4; +name="sgen" class="scsi" target=11 lun=4; +name="sgen" class="scsi" target=12 lun=4; +name="sgen" class="scsi" target=13 lun=4; +name="sgen" class="scsi" target=14 lun=4; +name="sgen" class="scsi" target=15 lun=4; + + +For the last bit it should be noted that my changer was set to lun 4, +and since I don't know which target I put all target numbers in (0-15). + +After these modifications the best is to reboot the machine, and do +the iscsi commands above, and he presto it works: + +In my case, three tape drives and one changer: + +root@solar:/kernel/drv# iscsiadm list target -S +Target: iqn.2008-09.com.example:server.tape + Alias: - + TPGT: 1 + ISID: 4000002a0000 + Connections: 1 + LUN: 4 + Vendor: STK + Product: L700 + OS Device Name: /dev/scsi/changer/c0t0d0 + LUN: 3 + Vendor: HP + Product: LTO3 ULTRIUM + OS Device Name: /dev/rmt/2n + LUN: 2 + Vendor: HP + Product: LTO3 ULTRIUM + OS Device Name: /dev/rmt/1n + LUN: 1 + Vendor: HP + Product: LTO3 ULTRIUM + OS Device Name: /dev/rmt/0n + + + +root@solar:/kernel/drv# mtx -f /dev/scsi/changer/c0t0d0 status + Storage Changer /dev/scsi/changer/c0t0d0:3 Drives, 29 Slots ( 5 Import/Export ) +Data Transfer Element 0:Empty +Data Transfer Element 1:Empty +Data Transfer Element 2:Empty + Storage Element 1:Full :VolumeTag=A0000001 + Storage Element 2:Full :VolumeTag=A0000002 + Storage Element 3:Full :VolumeTag=A0000003 + Storage Element 4:Full :VolumeTag=A0000004 + Storage Element 5:Full :VolumeTag=A0000005 + Storage Element 6:Full :VolumeTag=A0000006 + Storage Element 7:Full :VolumeTag=A0000007 + Storage Element 8:Full :VolumeTag=A0000008 + Storage Element 9:Empty:VolumeTag= + Storage Element 10:Empty:VolumeTag= + Storage Element 11:Empty:VolumeTag= + Storage Element 12:Empty:VolumeTag= + Storage Element 13:Empty:VolumeTag= + Storage Element 14:Empty:VolumeTag= + Storage Element 15:Empty:VolumeTag= + Storage Element 16:Empty:VolumeTag= + Storage Element 17:Empty:VolumeTag= + Storage Element 18:Empty:VolumeTag= + Storage Element 19:Empty:VolumeTag= + Storage Element 20:Empty:VolumeTag= + Storage Element 21:Empty:VolumeTag= + Storage Element 22:Empty:VolumeTag= + Storage Element 23:Empty:VolumeTag= + Storage Element 24:Full :VolumeTag=CLN00001 + Storage Element 25 IMPORT/EXPORT:Empty:VolumeTag= + Storage Element 26 IMPORT/EXPORT:Empty:VolumeTag= + Storage Element 27 IMPORT/EXPORT:Empty:VolumeTag= + Storage Element 28 IMPORT/EXPORT:Empty:VolumeTag= + Storage Element 29 IMPORT/EXPORT:Empty:VolumeTag= -- 1.5.6.5 -- 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
