Re: [libvirt] [PATCH] qemu: Forbid "sgio" support for SCSI generic host device

The kernel didn't support the unprivileged SGIO for SCSI generic device finally, and since it's unknow whether the way to support unprivileged SGIO for SCSI generic device will be similar as for SCSI block device or not, even it's simliar (I.e. via sysfs, for SCSI block device, it's /sys/dev/block/8\:0/queue/unpriv_sgio, for example), the file name might be different, So it's better not guess what it should be like currently. This patch removes the related code (mainly about the "shareable" checking on the "sgio" setting, it's not supported at all, why we leave checking code there? :-), and error out if "sgio" is specified in the domain config. --- src/qemu/qemu_conf.c | 87 ++++++++++++---------------------------------------- 1 file changed, 20 insertions(+), 67 deletions(-) diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c index 2c397b0..ad6348d 100644 --- a/src/qemu/qemu_conf.c +++ b/src/qemu/qemu_conf.c

@@ -1135,22 +1102,15 @@ qemuSetUnprivSGIO(virDomainDeviceDefPtr dev) } else if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV) { hostdev = dev->data.hostdev; - if (!hostdev->shareable || - !(hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS && - hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI)) - return 0;

- - if (!(hostdev_name = virSCSIDeviceGetDevName(NULL, - hostdev->source.subsys.u.scsi.adapter, - hostdev->source.subsys.u.scsi.bus, - hostdev->source.subsys.u.scsi.target, - hostdev->source.subsys.u.scsi.unit))) - goto cleanup; - - if (virAsprintf(&hostdev_path, "/dev/%s", hostdev_name) < 0) + if (hostdev->source.subsys.u.scsi.sgio) {

+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("'sgio' is not supported for SCSI " + "generic device yet ")); + ret = -1; goto cleanup; + } - path = hostdev_path; + return 0; } else { return 0; }