Don't forget it - just introduce. You might need to specify more parameters than you are though, and make sure they match up with vdi-param-list shows.
Bob From: Rushikesh Jadhav [mailto:[email protected]] Sent: 15 August 2013 16:53 To: Bob Ball Cc: [email protected] Subject: Re: [Xen-API] How to use iSCSI disk with Xenserver VM On Thu, Aug 15, 2013 at 1:38 PM, Bob Ball <[email protected]<mailto:[email protected]>> wrote: After running sr-introduce, find the record for the VDI on that SR and run vdi-introduce using the details from that record. This will update the managed flag so XAPI knows that it can manipulate it. Actually #xe sr-create automatically creates the VDI with managed ( RO): false . If I do vdi-forget and then vdi-introduce, it fails with below error # xe vdi-introduce uuid=daff8cde-029e-2c80-d2e4-a3ff012d0342 sr-uuid=43be7e37-ba1e-468b-4366-5c865ab4e1db location=daff8cde-029e-2c80-d2e4-a3ff012d0342 type=system Error code: SR_BACKEND_FAILURE_46 Error parameters: , The VDI is not available, May be duplicate VDI uuids ? #xe sr-scan re-reads the disks and register it as VDI but the managed flag stays to "false". The managed field is RO so I'm not able to update it. Any ideas ? Thanks. Bob From: Rushikesh Jadhav [mailto:[email protected]<mailto:[email protected]>] Sent: 14 August 2013 23:40 To: Bob Ball Cc: [email protected]<mailto:[email protected]> Subject: Re: [Xen-API] How to use iSCSI disk with Xenserver VM On Thu, Aug 15, 2013 at 3:15 AM, Bob Ball <[email protected]<mailto:[email protected]>> wrote: I'd advise you to use sr-introduce rather than sr-create. You'll have to provide a UUID, but you can generate one based on the targetIQN perhaps? Hi Bob, I have created the sr with type iSCSI and it has successfully created with vdi-per-LUN iSCSI. Then I created a VBD with # xe vbd-create bootable=0 device=1 vdi-uuid=daff8cde-029e-2c80-d2e4-a3ff012d0342 vm-uuid=dc3c8f17-27bb-86e8-ee28-706ffb680dde c0d20cbf-58a7-b2db-a4ad-85a357129e37 but Im not able to see it inside VM. When I try to activate the VBD it throws error like # xe vbd-plug uuid=c0d20cbf-58a7-b2db-a4ad-85a357129e37 This operation cannot be performed because the system does not manage this VDI vdi: c0d20cbf-58a7-b2db-a4ad-85a357129e37 # xe vbd-param-get uuid=c0d20cbf-58a7-b2db-a4ad-85a357129e37 param-name=attachable false (error: Api_errors.Server_error("VDI_NOT_MANAGED", _)) Looks familiar ? Bob ________________________________ From: Rushikesh Jadhav [[email protected]<mailto:[email protected]>] Sent: 14 August 2013 22:42 To: Bob Ball Cc: [email protected]<mailto:[email protected]> Subject: Re: [Xen-API] How to use iSCSI disk with Xenserver VM On Thu, Aug 15, 2013 at 2:57 AM, Bob Ball <[email protected]<mailto:[email protected]>> wrote: Ah - understood. Thanks. The iSCSI SR will of course be logged in while the SR is plugged on the host (through the PBD). You could potentially use a hook script (create files called vm-pre-start and vm-post-destroy in /etc/xapi.d) to create the SR dynamically, but beyond that there isn't currently a way to only have the iSCSI target logged in when the VM is booted. Hopefully the sr-create will not auto format the luns on every mount :) Thanks for your help. I'll report back if any success on this. Bob ________________________________ From: Rushikesh Jadhav [[email protected]<mailto:[email protected]>] Sent: 14 August 2013 22:22 To: Bob Ball Cc: [email protected]<mailto:[email protected]> Subject: Re: [Xen-API] How to use iSCSI disk with Xenserver VM On Thu, Aug 15, 2013 at 2:31 AM, Bob Ball <[email protected]<mailto:[email protected]>> wrote: Hi, You can create an SR using the undocumented and unsupported "iscsi" type and set the device config target and targetIQN values - this will set up a single VDI which is a raw lun. Thanks Bob but I'm looking for a generic way in which I would be storing the LUN info in VM properties other-config (MRW) or if possible in VBD other config such that whenever VM tries to boot, the hook will login on iSCSI target and pass the device. I think this needs be handled by blktap rather than XAPI or SMAPI, what you say ? Attach that VDI to a guest and it should be what you're looking for? Trying to automate it. Thanks, Bob ________________________________ From: [email protected]<mailto:[email protected]> [[email protected]<mailto:[email protected]>] on behalf of Rushikesh Jadhav [[email protected]<mailto:[email protected]>] Sent: 14 August 2013 16:07 To: [email protected]<mailto:[email protected]> Subject: [Xen-API] How to use iSCSI disk with Xenserver VM Hello All, Since normal Xen supports iSCSI lun as device for xvda, I would like to know its possibility with Xenserver. What are the possible ways may be hacky to get it working ? Since XAPI can now support Ceph as custom drive, how hard it would be to use same for iSCSI ? >From Xenserver POV, I undestood that Ceph is acting as a SR but I'm expecting >to pass iSCSI lun as raw block device to VM. Thanks.
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