* [Qemu-devel] Question about scsi emulation @ 2015-03-18 21:16 Yaoli Zheng 2015-03-23 12:48 ` Stefan Hajnoczi 2015-03-23 12:48 ` Stefan Hajnoczi 0 siblings, 2 replies; 11+ messages in thread From: Yaoli Zheng @ 2015-03-18 21:16 UTC (permalink / raw) To: qemu-devel; +Cc: xen-devel [-- Attachment #1: Type: text/plain, Size: 297 bytes --] Hi, We have problem using qemu emulated scsi driver(the old lsi). Wonder if any of other device model we can try for emulating scsi, and how we can get and config it in Xen? Having been told virtio-scsi is alternative one, but have no idea how to get it work in Xen. Thanks! Yaoli Zheng [-- Attachment #2: Type: text/html, Size: 2041 bytes --] ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Qemu-devel] Question about scsi emulation 2015-03-18 21:16 [Qemu-devel] Question about scsi emulation Yaoli Zheng @ 2015-03-23 12:48 ` Stefan Hajnoczi 2015-03-23 12:48 ` Stefan Hajnoczi 1 sibling, 0 replies; 11+ messages in thread From: Stefan Hajnoczi @ 2015-03-23 12:48 UTC (permalink / raw) To: Yaoli Zheng; +Cc: qemu-devel, xen-devel [-- Attachment #1.1: Type: text/plain, Size: 449 bytes --] On Wed, Mar 18, 2015 at 02:16:47PM -0700, Yaoli Zheng wrote: > We have problem using qemu emulated scsi driver(the old lsi). Wonder if any of other device model we can try for emulating scsi, and how we can get and config it in Xen? Having been told virtio-scsi is alternative one, but have no idea how to get it work in Xen. The MegaSAS HBA might be another option. Not sure whether MegaSAS or virtio-scsi are supported under Xen though. Stefan [-- Attachment #1.2: Type: application/pgp-signature, Size: 473 bytes --] [-- Attachment #2: Type: text/plain, Size: 126 bytes --] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Qemu-devel] Question about scsi emulation 2015-03-18 21:16 [Qemu-devel] Question about scsi emulation Yaoli Zheng 2015-03-23 12:48 ` Stefan Hajnoczi @ 2015-03-23 12:48 ` Stefan Hajnoczi 2015-03-23 18:17 ` Stefano Stabellini 2015-03-23 18:17 ` [Qemu-devel] [Xen-devel] " Stefano Stabellini 1 sibling, 2 replies; 11+ messages in thread From: Stefan Hajnoczi @ 2015-03-23 12:48 UTC (permalink / raw) To: Yaoli Zheng; +Cc: qemu-devel, xen-devel [-- Attachment #1: Type: text/plain, Size: 449 bytes --] On Wed, Mar 18, 2015 at 02:16:47PM -0700, Yaoli Zheng wrote: > We have problem using qemu emulated scsi driver(the old lsi). Wonder if any of other device model we can try for emulating scsi, and how we can get and config it in Xen? Having been told virtio-scsi is alternative one, but have no idea how to get it work in Xen. The MegaSAS HBA might be another option. Not sure whether MegaSAS or virtio-scsi are supported under Xen though. Stefan [-- Attachment #2: Type: application/pgp-signature, Size: 473 bytes --] ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Qemu-devel] Question about scsi emulation 2015-03-23 12:48 ` Stefan Hajnoczi @ 2015-03-23 18:17 ` Stefano Stabellini 2015-03-23 18:17 ` [Qemu-devel] [Xen-devel] " Stefano Stabellini 1 sibling, 0 replies; 11+ messages in thread From: Stefano Stabellini @ 2015-03-23 18:17 UTC (permalink / raw) To: Stefan Hajnoczi; +Cc: Yaoli Zheng, qemu-devel, xen-devel On Mon, 23 Mar 2015, Stefan Hajnoczi wrote: > On Wed, Mar 18, 2015 at 02:16:47PM -0700, Yaoli Zheng wrote: > > We have problem using qemu emulated scsi driver(the old lsi). Wonder if any of other device model we can try for emulating scsi, and how we can get and config it in Xen? Having been told virtio-scsi is alternative one, but have no idea how to get it work in Xen. > > The MegaSAS HBA might be another option. Not sure whether MegaSAS or > virtio-scsi are supported under Xen though. Making MegaSAS HBA work on Xen should be easy. Rather than virtio-scsi I would consider the new Xen pvscsi frontend/backend drivers, now upstream in Linux (drivers/scsi/xen-scsifront.c and drivers/xen/xen-scsiback.c). Usually Xen PV drivers perform much better than virtio devices on Xen. That said, probably most things would be better than the old lsi. ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Qemu-devel] [Xen-devel] Question about scsi emulation 2015-03-23 12:48 ` Stefan Hajnoczi 2015-03-23 18:17 ` Stefano Stabellini @ 2015-03-23 18:17 ` Stefano Stabellini 2015-03-24 0:20 ` [Qemu-devel] " Yaoli Zheng 2015-03-24 0:20 ` [Qemu-devel] [Xen-devel] " Yaoli Zheng 1 sibling, 2 replies; 11+ messages in thread From: Stefano Stabellini @ 2015-03-23 18:17 UTC (permalink / raw) To: Stefan Hajnoczi; +Cc: Yaoli Zheng, qemu-devel, xen-devel On Mon, 23 Mar 2015, Stefan Hajnoczi wrote: > On Wed, Mar 18, 2015 at 02:16:47PM -0700, Yaoli Zheng wrote: > > We have problem using qemu emulated scsi driver(the old lsi). Wonder if any of other device model we can try for emulating scsi, and how we can get and config it in Xen? Having been told virtio-scsi is alternative one, but have no idea how to get it work in Xen. > > The MegaSAS HBA might be another option. Not sure whether MegaSAS or > virtio-scsi are supported under Xen though. Making MegaSAS HBA work on Xen should be easy. Rather than virtio-scsi I would consider the new Xen pvscsi frontend/backend drivers, now upstream in Linux (drivers/scsi/xen-scsifront.c and drivers/xen/xen-scsiback.c). Usually Xen PV drivers perform much better than virtio devices on Xen. That said, probably most things would be better than the old lsi. ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Qemu-devel] Question about scsi emulation 2015-03-23 18:17 ` [Qemu-devel] [Xen-devel] " Stefano Stabellini @ 2015-03-24 0:20 ` Yaoli Zheng 2015-03-24 0:20 ` [Qemu-devel] [Xen-devel] " Yaoli Zheng 1 sibling, 0 replies; 11+ messages in thread From: Yaoli Zheng @ 2015-03-24 0:20 UTC (permalink / raw) To: Stefano Stabellini, Stefan Hajnoczi; +Cc: qemu-devel, xen-devel Thank you for the advice! It will be grateful if someone can provide any guide how to config MegaSAS HBA or how to use xen pvscsi in XEN. There seems no option in XEN for these two driver emulation and no document found online. Thanks! -----Original Message----- From: Stefano Stabellini [mailto:stefano.stabellini@eu.citrix.com] Sent: Monday, March 23, 2015 11:18 AM To: Stefan Hajnoczi Cc: Yaoli Zheng; qemu-devel@nongnu.org; xen-devel@lists.xen.org Subject: Re: [Xen-devel] [Qemu-devel] Question about scsi emulation On Mon, 23 Mar 2015, Stefan Hajnoczi wrote: > On Wed, Mar 18, 2015 at 02:16:47PM -0700, Yaoli Zheng wrote: > > We have problem using qemu emulated scsi driver(the old lsi). Wonder if any of other device model we can try for emulating scsi, and how we can get and config it in Xen? Having been told virtio-scsi is alternative one, but have no idea how to get it work in Xen. > > The MegaSAS HBA might be another option. Not sure whether MegaSAS or > virtio-scsi are supported under Xen though. Making MegaSAS HBA work on Xen should be easy. Rather than virtio-scsi I would consider the new Xen pvscsi frontend/backend drivers, now upstream in Linux (drivers/scsi/xen-scsifront.c and drivers/xen/xen-scsiback.c). Usually Xen PV drivers perform much better than virtio devices on Xen. That said, probably most things would be better than the old lsi. ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Qemu-devel] [Xen-devel] Question about scsi emulation 2015-03-23 18:17 ` [Qemu-devel] [Xen-devel] " Stefano Stabellini 2015-03-24 0:20 ` [Qemu-devel] " Yaoli Zheng @ 2015-03-24 0:20 ` Yaoli Zheng 2015-03-24 9:56 ` [Qemu-devel] " Juergen Gross 1 sibling, 1 reply; 11+ messages in thread From: Yaoli Zheng @ 2015-03-24 0:20 UTC (permalink / raw) To: Stefano Stabellini, Stefan Hajnoczi; +Cc: qemu-devel, xen-devel Thank you for the advice! It will be grateful if someone can provide any guide how to config MegaSAS HBA or how to use xen pvscsi in XEN. There seems no option in XEN for these two driver emulation and no document found online. Thanks! -----Original Message----- From: Stefano Stabellini [mailto:stefano.stabellini@eu.citrix.com] Sent: Monday, March 23, 2015 11:18 AM To: Stefan Hajnoczi Cc: Yaoli Zheng; qemu-devel@nongnu.org; xen-devel@lists.xen.org Subject: Re: [Xen-devel] [Qemu-devel] Question about scsi emulation On Mon, 23 Mar 2015, Stefan Hajnoczi wrote: > On Wed, Mar 18, 2015 at 02:16:47PM -0700, Yaoli Zheng wrote: > > We have problem using qemu emulated scsi driver(the old lsi). Wonder if any of other device model we can try for emulating scsi, and how we can get and config it in Xen? Having been told virtio-scsi is alternative one, but have no idea how to get it work in Xen. > > The MegaSAS HBA might be another option. Not sure whether MegaSAS or > virtio-scsi are supported under Xen though. Making MegaSAS HBA work on Xen should be easy. Rather than virtio-scsi I would consider the new Xen pvscsi frontend/backend drivers, now upstream in Linux (drivers/scsi/xen-scsifront.c and drivers/xen/xen-scsiback.c). Usually Xen PV drivers perform much better than virtio devices on Xen. That said, probably most things would be better than the old lsi. ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Qemu-devel] [Xen-devel] Question about scsi emulation 2015-03-24 0:20 ` [Qemu-devel] [Xen-devel] " Yaoli Zheng @ 2015-03-24 9:56 ` Juergen Gross 0 siblings, 0 replies; 11+ messages in thread From: Juergen Gross @ 2015-03-24 9:56 UTC (permalink / raw) To: Yaoli Zheng, Stefano Stabellini, Stefan Hajnoczi; +Cc: qemu-devel, xen-devel On 03/24/2015 01:20 AM, Yaoli Zheng wrote: > Thank you for the advice! > It will be grateful if someone can provide any guide how to config MegaSAS HBA or how to use xen pvscsi in XEN. > There seems no option in XEN for these two driver emulation and no document found online. The pvscsi driver is rather new in the Linux kernel. Support for pvscsi in Xen tools (xl) is just being worked on: http://lists.xen.org/archives/html/xen-devel/2015-03/msg00030.html Juergen > > Thanks! > > -----Original Message----- > From: Stefano Stabellini [mailto:stefano.stabellini@eu.citrix.com] > Sent: Monday, March 23, 2015 11:18 AM > To: Stefan Hajnoczi > Cc: Yaoli Zheng; qemu-devel@nongnu.org; xen-devel@lists.xen.org > Subject: Re: [Xen-devel] [Qemu-devel] Question about scsi emulation > > On Mon, 23 Mar 2015, Stefan Hajnoczi wrote: >> On Wed, Mar 18, 2015 at 02:16:47PM -0700, Yaoli Zheng wrote: >>> We have problem using qemu emulated scsi driver(the old lsi). Wonder if any of other device model we can try for emulating scsi, and how we can get and config it in Xen? Having been told virtio-scsi is alternative one, but have no idea how to get it work in Xen. >> >> The MegaSAS HBA might be another option. Not sure whether MegaSAS or >> virtio-scsi are supported under Xen though. > > Making MegaSAS HBA work on Xen should be easy. > > Rather than virtio-scsi I would consider the new Xen pvscsi frontend/backend drivers, now upstream in Linux (drivers/scsi/xen-scsifront.c and drivers/xen/xen-scsiback.c). Usually Xen PV drivers perform much better than virtio devices on Xen. > > That said, probably most things would be better than the old lsi. > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel > ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Qemu-devel] Question about scsi emulation @ 2015-03-24 9:56 ` Juergen Gross 0 siblings, 0 replies; 11+ messages in thread From: Juergen Gross @ 2015-03-24 9:56 UTC (permalink / raw) To: Yaoli Zheng, Stefano Stabellini, Stefan Hajnoczi; +Cc: qemu-devel, xen-devel On 03/24/2015 01:20 AM, Yaoli Zheng wrote: > Thank you for the advice! > It will be grateful if someone can provide any guide how to config MegaSAS HBA or how to use xen pvscsi in XEN. > There seems no option in XEN for these two driver emulation and no document found online. The pvscsi driver is rather new in the Linux kernel. Support for pvscsi in Xen tools (xl) is just being worked on: http://lists.xen.org/archives/html/xen-devel/2015-03/msg00030.html Juergen > > Thanks! > > -----Original Message----- > From: Stefano Stabellini [mailto:stefano.stabellini@eu.citrix.com] > Sent: Monday, March 23, 2015 11:18 AM > To: Stefan Hajnoczi > Cc: Yaoli Zheng; qemu-devel@nongnu.org; xen-devel@lists.xen.org > Subject: Re: [Xen-devel] [Qemu-devel] Question about scsi emulation > > On Mon, 23 Mar 2015, Stefan Hajnoczi wrote: >> On Wed, Mar 18, 2015 at 02:16:47PM -0700, Yaoli Zheng wrote: >>> We have problem using qemu emulated scsi driver(the old lsi). Wonder if any of other device model we can try for emulating scsi, and how we can get and config it in Xen? Having been told virtio-scsi is alternative one, but have no idea how to get it work in Xen. >> >> The MegaSAS HBA might be another option. Not sure whether MegaSAS or >> virtio-scsi are supported under Xen though. > > Making MegaSAS HBA work on Xen should be easy. > > Rather than virtio-scsi I would consider the new Xen pvscsi frontend/backend drivers, now upstream in Linux (drivers/scsi/xen-scsifront.c and drivers/xen/xen-scsiback.c). Usually Xen PV drivers perform much better than virtio devices on Xen. > > That said, probably most things would be better than the old lsi. > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel > ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Qemu-devel] Question about scsi emulation 2015-03-24 9:56 ` [Qemu-devel] " Juergen Gross (?) @ 2015-03-24 17:00 ` Stefano Stabellini -1 siblings, 0 replies; 11+ messages in thread From: Stefano Stabellini @ 2015-03-24 17:00 UTC (permalink / raw) To: Juergen Gross Cc: Stefan Hajnoczi, xen-devel, Yaoli Zheng, qemu-devel, Stefano Stabellini On Tue, 24 Mar 2015, Juergen Gross wrote: > On 03/24/2015 01:20 AM, Yaoli Zheng wrote: > > Thank you for the advice! > > It will be grateful if someone can provide any guide how to config MegaSAS > > HBA or how to use xen pvscsi in XEN. > > There seems no option in XEN for these two driver emulation and no document > > found online. > > The pvscsi driver is rather new in the Linux kernel. Support for pvscsi > in Xen tools (xl) is just being worked on: > > http://lists.xen.org/archives/html/xen-devel/2015-03/msg00030.html > Regarding MegaSAS, it should be just a matter of passing the right command line arguments to QEMU so that it will emulate it, same as for QEMU without Xen. You can use device_model_args in the VM config file to pass custom command line arguments from xl to QEMU. > > > > Thanks! > > > > -----Original Message----- > > From: Stefano Stabellini [mailto:stefano.stabellini@eu.citrix.com] > > Sent: Monday, March 23, 2015 11:18 AM > > To: Stefan Hajnoczi > > Cc: Yaoli Zheng; qemu-devel@nongnu.org; xen-devel@lists.xen.org > > Subject: Re: [Xen-devel] [Qemu-devel] Question about scsi emulation > > > > On Mon, 23 Mar 2015, Stefan Hajnoczi wrote: > > > On Wed, Mar 18, 2015 at 02:16:47PM -0700, Yaoli Zheng wrote: > > > > We have problem using qemu emulated scsi driver(the old lsi). Wonder if > > > > any of other device model we can try for emulating scsi, and how we can > > > > get and config it in Xen? Having been told virtio-scsi is alternative > > > > one, but have no idea how to get it work in Xen. > > > > > > The MegaSAS HBA might be another option. Not sure whether MegaSAS or > > > virtio-scsi are supported under Xen though. > > > > Making MegaSAS HBA work on Xen should be easy. > > > > Rather than virtio-scsi I would consider the new Xen pvscsi frontend/backend > > drivers, now upstream in Linux (drivers/scsi/xen-scsifront.c and > > drivers/xen/xen-scsiback.c). Usually Xen PV drivers perform much better than > > virtio devices on Xen. > > > > That said, probably most things would be better than the old lsi. > > > > _______________________________________________ > > Xen-devel mailing list > > Xen-devel@lists.xen.org > > http://lists.xen.org/xen-devel > > > ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [Qemu-devel] [Xen-devel] Question about scsi emulation 2015-03-24 9:56 ` [Qemu-devel] " Juergen Gross (?) (?) @ 2015-03-24 17:00 ` Stefano Stabellini -1 siblings, 0 replies; 11+ messages in thread From: Stefano Stabellini @ 2015-03-24 17:00 UTC (permalink / raw) To: Juergen Gross Cc: Stefan Hajnoczi, xen-devel, Yaoli Zheng, qemu-devel, Stefano Stabellini On Tue, 24 Mar 2015, Juergen Gross wrote: > On 03/24/2015 01:20 AM, Yaoli Zheng wrote: > > Thank you for the advice! > > It will be grateful if someone can provide any guide how to config MegaSAS > > HBA or how to use xen pvscsi in XEN. > > There seems no option in XEN for these two driver emulation and no document > > found online. > > The pvscsi driver is rather new in the Linux kernel. Support for pvscsi > in Xen tools (xl) is just being worked on: > > http://lists.xen.org/archives/html/xen-devel/2015-03/msg00030.html > Regarding MegaSAS, it should be just a matter of passing the right command line arguments to QEMU so that it will emulate it, same as for QEMU without Xen. You can use device_model_args in the VM config file to pass custom command line arguments from xl to QEMU. > > > > Thanks! > > > > -----Original Message----- > > From: Stefano Stabellini [mailto:stefano.stabellini@eu.citrix.com] > > Sent: Monday, March 23, 2015 11:18 AM > > To: Stefan Hajnoczi > > Cc: Yaoli Zheng; qemu-devel@nongnu.org; xen-devel@lists.xen.org > > Subject: Re: [Xen-devel] [Qemu-devel] Question about scsi emulation > > > > On Mon, 23 Mar 2015, Stefan Hajnoczi wrote: > > > On Wed, Mar 18, 2015 at 02:16:47PM -0700, Yaoli Zheng wrote: > > > > We have problem using qemu emulated scsi driver(the old lsi). Wonder if > > > > any of other device model we can try for emulating scsi, and how we can > > > > get and config it in Xen? Having been told virtio-scsi is alternative > > > > one, but have no idea how to get it work in Xen. > > > > > > The MegaSAS HBA might be another option. Not sure whether MegaSAS or > > > virtio-scsi are supported under Xen though. > > > > Making MegaSAS HBA work on Xen should be easy. > > > > Rather than virtio-scsi I would consider the new Xen pvscsi frontend/backend > > drivers, now upstream in Linux (drivers/scsi/xen-scsifront.c and > > drivers/xen/xen-scsiback.c). Usually Xen PV drivers perform much better than > > virtio devices on Xen. > > > > That said, probably most things would be better than the old lsi. > > > > _______________________________________________ > > Xen-devel mailing list > > Xen-devel@lists.xen.org > > http://lists.xen.org/xen-devel > > > ^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2015-03-24 17:02 UTC | newest] Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-03-18 21:16 [Qemu-devel] Question about scsi emulation Yaoli Zheng 2015-03-23 12:48 ` Stefan Hajnoczi 2015-03-23 12:48 ` Stefan Hajnoczi 2015-03-23 18:17 ` Stefano Stabellini 2015-03-23 18:17 ` [Qemu-devel] [Xen-devel] " Stefano Stabellini 2015-03-24 0:20 ` [Qemu-devel] " Yaoli Zheng 2015-03-24 0:20 ` [Qemu-devel] [Xen-devel] " Yaoli Zheng 2015-03-24 9:56 ` Juergen Gross 2015-03-24 9:56 ` [Qemu-devel] " Juergen Gross 2015-03-24 17:00 ` Stefano Stabellini 2015-03-24 17:00 ` [Qemu-devel] [Xen-devel] " Stefano Stabellini
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