[pve-devel] scsihw / hotplug integration into GUI

Alexandre DERUMIER aderumier at odiso.com
Mon Aug 13 12:19:52 CEST 2012


>>But scsi-block needs at least the following patch as it misses some 
>>implemtations. Otherwise you can't start a hd with scsi-block. 
(yes, I want to said when qemu-kvm 1.2 will be release)

> - but scsi-generic seem faster (but need guest 3.4 ?) 
>>Will check / recheck this. 
In fact, virtio-scsi drivers are only available since kernel 3.4.


Can you try:
lsi controller + libiscsi + scsi-generic   vs scsi-block
lsi controller + open-scsi (host) + scsi-generic  vs scsi-block
virtio-scsi controller + libiscsi + scsi generic  vs scsi-block
virtio-scsi controller + open-scsi (host) + scsi-generic  vs scsi-block

and see what is the best performance ?




----- Mail original ----- 

De: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
À: "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: "Dietmar Maurer" <dietmar at proxmox.com>, pve-devel at pve.proxmox.com 
Envoyé: Lundi 13 Août 2012 12:09:47 
Objet: Re: [pve-devel] scsihw / hotplug integration into GUI 

Am 13.08.2012 12:04, schrieb Alexandre DERUMIER: 
>>> So maybe it is better to disable auto detection? My impression was that this feature 
>>> is working, but now you say that does not work at all? 
> 
> autodetection is currently good 
> 
> 
> scsi-hd is normal 
> scsi-block if /dev/.. is a scsi device (passthrough) 
> 
> 
> now with libiscsi 
> 
> - scsi-hd is normal 
> - scsi-block should be the default (as libiscsi use iscsi devices) 
But scsi-block needs at least the following patch as it misses some 
implemtations. Otherwise you can't start a hd with scsi-block. 

> - but scsi-generic seem faster (but need guest 3.4 ?) 
Will check / recheck this. 

Stefan 



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