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From: Fabian Ebner <f.ebner@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Tue, 13 Apr 2021 10:24:14 +0200
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Subject: [pve-devel] [RFC qemu-server] avoid setting lun number for drives
when pvscsi controller is used
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Reported in the community forum[0].
In QEMU's hw/scsi/vmw_pvscsi.c in the SCSIBusInfo struct, the max_lun property
is set to 0. This means that in our stack, one cannot have multiple disks and
use 'scsihw: pvscsi' currently, as kvm would fail with
bad scsi device lun: 1
Instead of increasing the lun number, increase the scsi-id, as we already do for
lsi.* (in hw/scsi/lsi53c895a.c the max_lun property is also 0).
[0]: https://forum.proxmox.com/threads/kvm-bad-scsi-device-lun-1.84318/
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
---
I'm not experienced in this area, so not at all sure if this is the proper
solution/workaround.
PVE/QemuServer.pm | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index fdb2ac9..4ce663b 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -1451,7 +1451,7 @@ sub print_drivedevice_full {
}
}
- if (!$conf->{scsihw} || ($conf->{scsihw} =~ m/^lsi/)){
+ if (!$conf->{scsihw} || $conf->{scsihw} =~ m/^lsi/ || $conf->{scsihw} eq 'pvscsi') {
$device = "scsi-$devicetype,bus=$controller_prefix$controller.0,scsi-id=$unit";
} else {
$device = "scsi-$devicetype,bus=$controller_prefix$controller.0,channel=0,scsi-id=0"
--
2.20.1